Fosi Audio BT20A Pro Mini Amp TPA3255 Review and Power Output Test

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Fosi Audio BT20A Pro Mini Amp Review
UPDATE: See Power Supply Comparison • Fosi Audio BT20A Pro P...
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EXCLUSIVE 20% off Discount Code: 20APROWAL20
Discount Valid April 10-30, 2023
Fosi Audio BT20A standard model: amzn.to/43lwTfp
Fosi Audio 48V 5A Power Supply: (Coming Soon)
0-48V 10A Variable Voltage Power Supply: amzn.to/3mkJv5P
AIYIMA A07 Amp with 32V adapter: amzn.to/3Xu0jEA
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Elac Bookshelf Speakers: amzn.to/3nVrhbJ
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Anti-Static IC Puller: amzn.to/3miE8nE
3.5mm to RCA Adapter: amzn.to/4082DC9
Polk Audio PSW10 Powered Subwoofer: amzn.to/3nVXWOa
Related Videos
Update - Fosi Audio BT20A Pro Power Supply Tests: • Fosi Audio BT20A Pro P...
Fosi Audio M0-3 Mini Amp: • Amazon Best Seller? Fo...
Aiyima A07 Mini Amp (TPA3255) : • Is it the MOST POWERFU...
Douk Audio M1 Pro Mini Amp: • Amazon Mini Amp with S...
Mini Amp Video Playlist: bit.ly/3IMdtbN
Amp Dyno Modes Explained: • 3 Modes of the Amp Dyn...
More Power Output than Power Supply?: • HOW CAN IT BE?? SaiYin...
VIDEO INDEX
0:00 Intro
0:36 Unboxing
1:30 Features
3:08 Specifications
3:43 Amp Dyno Tests 32V
5:22 Amp Dyno Tests 48V
7:18 More Power Out Than In?
7:40 Pre-Amp Output Tests
8:55 Bluetooth Connection
9:22 Sound Tests - Song Demo's
10:46 What's Inside?
12:36 Pros and Cons
13:39 Final Thoughts
14:20 EXTRA Test
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TEST BENCH EQUIPMENT
SMD / D'Amore Engineering Amp Dyno: goo.gl/sJTcf7
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DISCLAIMER: This video and description contains affiliate links, which means that if you purchase from one of the product links, I may receive a small commission. As an Amazon Associate I earn from qualifying purchases

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4 июл 2024

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Комментарии : 424

@ryanmalin Год назад

Im using a mini amp for my computer speakers. Its only 50w x2 but it pushes my 2 12 inch 3 way speakers just loud enough for the police to be called so Im happy with it.

@1pcfred Год назад

The Police? Roxanne you don't have to put on the red light.

@aloneangel507 Год назад

What is the RMS power of the amplifier? And how much rms power speakers are they?

@myquietreviewsfeaturingc.t9354 5 месяцев назад

@@1pcfred That was funny 😂😂😂👍🏿

@tatialo37 Год назад

Yay! Another great amp test!!!

@Toid Год назад

Awesome Test! Loved the video as always! Keep up the great work!

@NuriBass69 Год назад

Just bought a Fosi amp for the garden shed, so glad I stumbled upon this video

@denisohbrien Год назад

These are great little products, my separates system eventually just became an amp and Bluetooth dongle, and now it's just one of these little amps with built in Bluetooth, sounds plenty good enough for Bluetooth audio and goes plenty loud with some good speakers. The big plus is the size and simplicity. Big fan.

@michaelbowman7398 Год назад

These mini amps are definitely getting nice. Thanks to you for weeding out the good ones from the bad

@fosiaudio 10 месяцев назад

And your suggestions can make us even better.

@Idiotsincarshere 5 месяцев назад

@@fosiaudio newbie here, can this run 6ohm bookshelf speakers? if yes what's the expected output? keep up the great work!

@NathanOakley1980 Год назад

Lovin the distortion testing. 😊

@freedblowfish3705 7 месяцев назад

Bought fosi cause you, you guided me down a rabbit hole, got 4 need at least 6 more, and wiim minis

@joentell Год назад

Thanks for the tests! I will refer to you in my review.

@wal Год назад

Awesome, can’t wait to see your vid 🤙

@mullinperformanceaudio5902 Год назад

Clean little unit. I love these palm size amps putting out $1000 watt amp numbers from the 90'.s

@EcSsAwS Год назад

I been using a NOB sound Bluetooth amplifier I seen in your videos well over 2 years ago now It’s still kicking and does great. Powers 2 Fisher cabinet speakers 4ohm each (. 2 10s 6” mid 3” tweet per cabinet)

@doctormidnight Год назад

Thanks so much for fufilling my request to do reviews/measurements of these little guys. My SMSL SA-300 is an absolute banger and has driven everything I've thrown at it, even a 4 ohm speaker with an 86 dB sensitivity.

@purplehazeffc Год назад

I also would like to see SMSL products tested. I've got the SMSL AD18. 100% awesome amp for the $$$

@nunyabizznizz7326 Год назад

thank you for the honest review......never skip your content 👍👍

@halseyballistic Год назад

Great review!

@chijiokepenny2100 Год назад

I purchased this mini amp after seeing it being tested here on your channel to run a set of KEF Q150 I had sitting around. This little guy sounds great and does a good job running them. Will purchase the 48v 5a power supply when it's available!!!

@johnniebeard8647 Год назад

I'd never heard of this amp without this chan.thanks BIG D

@Zodliness Год назад

@Williston Audio Labs - I've been into reducing the physical footprint of the amplifiers that I use in my various portable audio projects. Recently I've been using the Focal four channel mini car audio amp at £250 a pop. Attached to an external mains 30amp 12v power supply, the bass line supported by a Stinger 10 Farad competition cap. Running a pair of 15" 250w subs. These smaller but equally good units would make pretty good donors for many 'mid-power' projects. Thanks for the great review. Keep em coming!

@xtraflo 13 дней назад

What a Great Microphone to capture that sound!!

@bruth6138 Год назад

As usual, great video. Keep it up.

@mtayfur83 7 месяцев назад

I bought new Dali Spektor 2 bookshelf speakers to listen to quality music. Therefore, I needed a good low-budget amplifier that could drive this speaker, and since I was satisfied with the Fosi Audio BT20A amplifier I had used before, I now ordered the Fosi Audio BT20A PRO and am excitedly waiting for it to arrive. Thanks for the review.

@kswis Год назад

Clean indeed, very nice unit

@pawnch83 Год назад

More mini amp content, such a great subject.

@hindesite Год назад

Bought a BT20A to replace an old Hitachi HA-3 amp, for use alongside my PC; have just bought the BT20A Pro to replace that, so I can replace my 30 year old NAD amp in our lounge. Impressive, been messing about with or working in audio since I was a kid, so seeing these amps is pretty interesting.

@jdlech Год назад

VERY NICE use of the distortion meter. Thanks.

@smalltimer4370 Год назад

Love that old school distortion meter!

@Idiotsincarshere 5 месяцев назад

Thanks for your tests! My Fosi is in the mail. Looking to push a set of Sony SSCS5s, which are 6ohms I believe, to start my first dive back into audiophile fun. Still deciding on sub.

@vahanyazarian5582 Год назад

Thanks for video. Amazon has the Fosi 48V power supply separate for$49.99.

@TechGorilla1987 Год назад

I have the Kinter K2020A+ Tripath amp on a pair of Bose bookshelf speakers playing through a TASCAM USB audio interface. I'm consistently amazed how much power this tiny box has.

@andrewarthurmatthews6685 2 месяца назад

Just ordered this

@troyg3831 Год назад

Promo code wasn't working for a while but Just tried it again and it's working now. Guess when they said the 10th they meant give or take 4 hours. Been looking for a little amp for my theater chair but these rarely get a reliable review so Thank you BigD! I hope my chair will soon be Bumpin'! lol

@wcg66 Год назад

Im super impressed with my Fosi and Ayima amps based on the TPA 3255. They are powerful enough for me but more importantly, they sound really good. On my Ayima, I’m using a 48V 10A amp supply. I don’t need that much but presumably, it provides plenty of headroom.

@andrzejjozwiak6412 6 месяцев назад

Kolego możesz podać dokładny symbol tego zasilacza.

@Ramsaaaa 7 месяцев назад

Recently picked up a BT20A Pro, could't resist pairing it with a MiniDsp2x4HD and another Fosi V3 for a bi-amp two way (8" SB woofer+Tectonic 1.25" full range). Just astonished by the quality. For under $600 total, a low-distortion 100WPC biamped 2-way with DSP. I can't speak highly enough of these Fosi amps.

@fritzkabeano1969 Год назад

Still glad I got the Aiyima A08 pro with the same 3255 Ti power chip BUT it comes with the 36v/6amp power brick and it has better bluetooth codec coverage (aptx hd and LDAC). That can be bought for $110 on sale.

@richardwilliams2179 Год назад

I’m impressed with a number of these D class amps impart because it’s a desktop… not out to please larger crowds…. These will fill a modest size room with plenty of sound

@balee7774 Год назад

I have the original. I use it for a desktop solution with a polk sub that allows line level input and output. Paired with neumi bookshelf speakers, it sounds wonderful. It sounds better than both my Sony and pioneer $400 receivers, but those are 5.1 systems and don't play 2 channel sound as well.

@xray111xxx Год назад

A ton of fun in a small package. The power supply is everything. Everything else is just here for the ride. I think for a desktop on the low cost. These are just fine.

@wal Год назад

*SHOP* Fosi Audio BT20A Pro: amzn.to/43g4JT6 *EXCLUSIVE 20% off Discount Code: 20APROWAL20* Discount Valid April 10-30, 2023 Fosi Audio BT20A standard model: amzn.to/43lwTfp Fosi Audio 48V 5A Power Supply: (Coming Soon) 0-48V 10A Variable Voltage Power Supply: amzn.to/3mkJv5P AIYIMA A07 Amp with 32V adapter: amzn.to/3Xu0jEA AIYIMA 48V 5.2A Adapter: amzn.to/3H1CHSh Elac Bookshelf Speakers: amzn.to/3nVrhbJ Speaker Banana Plugs: amzn.to/3zLGrTv Anti-Static IC Puller: amzn.to/3miE8nE 3.5mm to RCA Adapter: amzn.to/4082DC9 Polk Audio PSW10 Powered Subwoofer: amzn.to/3nVXWOa *RELATED VIDEOS* Update - Fosi Audio BT20A Pro Power Supply Tests: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-wJeQO-E1U1g.html Fosi Audio M0-3 Mini Amp: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-wrBPAP3nol0.html Aiyima A07 Mini Amp (TPA3255) : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kBim2j7Gm5o.html Douk Audio M1 Pro Mini Amp: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WROm7jJbb2M.html Mini Amp Video Playlist: bit.ly/3IMdtbN Amp Dyno Modes Explained: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Q0m6NsB-HHc.html More Power Output than Power Supply?: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-c7QELbpKMuI.html *VIDEO INDEX* 0:00 Intro 0:36 Unboxing 1:30 Features 3:08 Specifications 3:43 Amp Dyno Tests 32V 5:22 Amp Dyno Tests 48V 7:18 More Power Out Than In? 7:40 Pre-Amp Output Tests 8:55 Bluetooth Connection 9:22 Sound Tests - Song Demo's 10:46 What's Inside? 12:36 Pros and Cons 13:39 Final Thoughts 14:20 EXTRA Test *TEST BENCH EQUIPMENT* SMD / D'Amore Engineering Amp Dyno: goo.gl/sJTcf7 XS Power D1400 Batteries - amzn.to/2BPFCKW XS Power PSC60 Charger - amzn.to/2CHGcfs Fluke 1000A AC/DC Clamp Meter: amzn.to/2Rw5WDA Handheld Dyno: amzn.to/2u2EgKV My Favorite Screwdriver Kit: amzn.to/2x0VzcE _DISCLAIMER: This video and description contains affiliate links, which means that if you purchase from one of the product links, I may receive a small commission. As an Amazon Associate I earn from qualifying purchases_

@murrayshekelberg9754 Год назад

May have to pick one of these up. I never would have imagined so much power in such a small setup would be possible in my younger days in the 80s and 90s. Looks like really clean volume as well.

@stefanweilhartner4415 Год назад

they didn't use switching power supplies and did not have class D amplifier chips.

@murrayshekelberg9754 Год назад

@@stefanweilhartner4415 true, but the Skar has a glaring lack of vibration protection. It is a common point of failure with those.

@jeanious2009 Год назад

Nice review, amazing how far we are getting with technology size and package of devices.

@JailDoctor1 10 месяцев назад

I bought the earlier version of this Amp. Great and it still works. I like Class D amps but...........

@K0Kaz Год назад

This has definitely been a surprising product category. I was skeptical early on, since I had an early Blaupunkt Tripath car amp that sounded terrible (and quit working). But I was happy enough with my first Topping TP30 mini amp that I upgraded to a SMSL Q5 Pro, and been considering upgrading again.

@wal Год назад

These amps for some reason get a ton of interest on my channel. I love to test home and car audio but it seems most of the home audio (other than these), don't perform well for me.

@hardtymz2517 Год назад

Man, NO ONE had those class T Blaupunkt but I remember them in catalogs. No one knew that tech at the time and wanted to be the guinea pig. Ugly plastic things but tiny and could hide them under a seat. Ahead of their time. At least now I know they weren't that great thanks to you. Lol. Even eBay would always tell me "wtf are those things?? And, yea, we don't have any nor ever will." The best sounding big class T for home audio was by far the 1st Gen (non tilted logo) Topping TP60. Never seen an amp that could max out and still get louder and no distortion in sight. wow!

@LuminairPrime Год назад

@@wal What's special about these small no-name amps is that they're cutting the legs off the scam artist audiophile companies that have been selling this stuff for 10x more money all our lives

@jeffberwick 10 месяцев назад

Great review! I'm glad you took it all the way apart, including showing the TPA3255 chip. I would be curious to know if any of these mini-amps are using post filter feedback. TI shows how to do that (Application Report SLAA788A ) to improve the THD at the expense of gain, which can be made up elsewhere in the system. Post filter feedback is nice because it reduces the effect of output inductor nonlinearity and flattens the frequency response if done right.

@saschacubexyz Год назад

Nice results 4 this little guy👍👍👍

@Random_4400 Год назад

I have the BT30D PRO and i must say i am very impressed by how much power it puts out, good amps for even the biggest of bookshelf speakers!

@TFOTLITBOK_P1_7 Год назад

I'm running a pair of Bose 251's and a Velodyne 8" sealed sub enclosure with that same model and I completely agree with you. For the cost it is quite impressive. Very clear audio quality and plenty of power.

@thehotrodstation3313 Год назад

I have one as well pre 2000 polks with passive subwoofer. And Holy crap for the size very good amp

@zavatone Год назад

I've got a few 700 watt amps, one 1000 watt amp + one 250 per channel amp that I use on one set of 4 ohm speakers right below one of a Fosi preamp and alleged 160 watt amp. I have to admit that aside from the pop when turning them on and off, they are certainly decent units when compared to the big boys.

@ceeweedsl Год назад

We have a BT30d Pro driving Sony bookshelf sscs-5 with 10" passive sub and are getting plenty of full sound for our small dance events. Large outdoor patio. Excellent sound. Look forward to upgrading the power supply. I think that's where it matters, not op amps.

@cragre28 Год назад

I am building a super cheap dual 8 inch tower with buyout Dynalab 8's, a cheap tweeter and pre-assembled 3000k crossover. This sounds like a good option for a bedroom or living room stereo system that could double as a simple 2.1 HT set up by adding a sub amp. This would also work well in a classic car with a 4-600 watt inverter. You could hide the amp in a glove box and use bluetooth so no wires to splice in for power and ground.

@MrFatman489 Год назад

Big D would love to see you check out some of the sure/wondom board amps, been watching for ages because of car audio but recently found your mini amp videos, impeccable as always bud keep it up!

@kandykorn6136 Год назад

Dang! I gotta get me one of these!

@411LED Год назад

Nice B~D... I've been tinkering with these little demons for the last few years and it seems like the 3255 is maturing quite nicely. Gotta luv the interchangeable OP amps the boards are now using as well as the tubes. I found the best way to remove OPs is with a balanced wiggle/pull on each open end using one tweezer like tool. Yes indeed most of the included power converters claims are unreliable so my solution was to snatch up an adjustable 48V~10A transformer...

@411LED Год назад

@@gags730 Not to discredit your knowledge, since the TPA3116 became readily available for the past 5yrs they've been available. Simplicity is a matter of joining some small amps with a Home Theater preamp.

@4LED Год назад

@@gags730 A person gets what is given and if not, then it's time to move on. With B-D's channel, it's easy to realize his reviews show mutual respect to all, except maybe himself and/or manufactured items.😁 As for suggestions: You stated experience with Puters and auto sound so go with the flow on what you know by Using a 2nd Computer/Laptop Add a HiFi 5.2 Bluetooth Audio Adapter w/LDAC,APX device such as Qualcomm=1Mii/BluDento ($50) Then use a 5.1 USB sound card. IMO the most reliable 5.1 class D amps are offered by Douk/Nobsound, Aiyama, Fossi. Separates will give the advantage of upgrading due to rapid evolution: There are 5.1 class AB amps with many options offered by no name and cheap A$$ companies like Pyramid, Pyle etc. Note China has the worse Quality Control and it's senseless to order one from there. Keep in mind try not to purchase the latest claimed greatest hardware, rather the next best because it will save $'s.

@insidechocolatewithjimothy5313 3 месяца назад

It's great to hear Billy Bob Thornton doing such great reviews.

@anthonybarra2391 Год назад

Great review thanks big D. These little amps are pretty good. I'm old school , still have my big hot sony lump from the 90s but things move on I guess

@Budgethifiamps Год назад

Maybe you can try AIYIMA A07 Pro

@gregmorris2022 Год назад

Would love to see you test an Emotiva home audio amp.

@junglerider007 3 месяца назад

Nice informative video! please also do a dyno test and review of the Fosi BT30D

@jimrusch22 9 месяцев назад

Love to see an amp like this with XLR inputs, SpeakOn outputs and adjustable gain.

@brian6029 Год назад

That thing is nice! Can you please test your car amps the same way. I love seeing the distortion meter. 😎👍👍

@DJBossCreations Год назад

I love the way that Elak sounds amazing in my headphones

@wal Год назад

They are amazing speakers!

@dancingwiththedogsdj Год назад

Big D! Ok, is it just me or haven't you been doing a little more nearly every episode/between episode stuff and diving deeper into this stuff that probably a lot of us didn't even know we needed or would find helpful or at least interesting! Love it bro!! 🍻🌎❤️🌮🎶 What's next!? Your own line?????? You're just gathering data to make something good, ain't ya? I wonder how long it will be until we have a signal processor/amp based on newer A.I. with ChatGPT built in 🤔😁 P.S. - Big "D" amp: Small size, exceeds power ratings, oversized speaker terminals, solid reliability/cost, easy to repair, Tiffany style RCA jacks, high efficiency, REASONABLE plain and simple. 🤯

@iikatinggangsengii2471 6 месяцев назад

hm if its my signature id like vision ears to develop it

@TheMatsushitaMan Год назад

8:04 Panasonic (Matsushita), my favourite brand of home appliances! I'd love to have their test equipment too.

@sleepyboytx Год назад

I have the BT30D 2.1 non pro version and I've been extremely impressed with it. It's driving Two Dayton Audio Bookshelves and a Skar audio 8" and it's by far the best and clearest sounding home system I've had to date!

@jimjones3287 Год назад

how do you get it to run the skar since there's no low pass filter?

@sleepyboytx Год назад

@@jimjones3287 adjustable sub frequency and volume level. It blends in very well for what it is. I'm also using it for my computer speakers and the sub is under the desk if that helps.

@jimjones3287 Год назад

@@sleepyboytx oh the version you have is 2.1 channels (2 stereo + subwoofer output), the one reviewed here is only 2 channel stereo.

@VochoTalacha Год назад

I have a 2.1 fosie audio amp that supports passive subs. The damn thing sounds very nice but it keeps on cutting the highs and mids if I crank the volume. I've used several power supplies to give it more juice and none of them stop it from cutting out. This is a shame.

@bllazzin 11 месяцев назад

Great review!! What would be an alternative that would solve most of the cons mentioned? Thanks a lot!

@markshade8398 Год назад

I remember in the 70s and 80s when a 100 watt per channel home stereo amp was huge and weighed a ton. So much change in the audio world.

@especialistqap Год назад

100 watt from vintage amp sound better than 100 watt from new class D amplifier

@markshade8398 Год назад

@@especialistqap agreed but still amazing.

@hardtymz2517 Год назад

when the huge power supply brick is factored in, they're not so tiny anymore. i wish they did this all in one chassis. it's annoying.

@Grommet2007 Год назад

@@hardtymz2517 The separate power supply removes a possible source of noise from the amp's chassis.

@markshade8398 Год назад

@@hardtymz2517 even then they are considerably smaller and lighter than the usual 35+ pound home audio amps of the 70s and 80s that were usually about 15+ inches wide, 12+ inches deep and 4+ inches tall. But I do understand your point.

@joeyjustin6895 Год назад

HEY BUD. ALL CAPS JOE HERE I AM IN LOVEEEE I SAY. WITH YOU FOR BUYING THAT DISTORTION METER I REALLY HOPE TO SEE IT IN FUTURE VIDS. ON HOW MUCH POWER AMPS CAN PUT OUT AT .0005 DISTORTION. IF IT GOES THAT LOW. OR AT LEAST 0.005

@arfathkhalid1099 Год назад

Big Fan!!! Plz test "TPA 3251 Class D AMP" Great Videos! Thanks

@Skarfar90 Год назад

Damn, this looks like an amazing amp for a bluetooth speaker project

@kyleshelton1636 Год назад

If you start doing headphone amps at any point, do the Schit Hel!

@Grommet2007 Год назад

What I've found with some of these small amps is that the dual plugs can work, but you'll need to use them a bit differently. Instead of using one per channel, use one dual plug for the positive connections and one for the negative connections. Then insert them accordingly (one dual plug into the positive terminals, and one into the negative terminals).

@madmax2069 Год назад

Yup

@Grommet2007 Год назад

@Douglas Blake Been using that technique for years with my Dayton chip amp, LOL. The extra stiffness provided by using dual plugs makes sure that there's a lot less risk of a plug moving around and causing a short as a result. Just make sure to insert the dual plug at the top with the ends of the wire facing up, and the one at the bottom with the ends of the wire facing down. No unsightly tape required. ....

@Frietpan Год назад

neat!

@terryjones589 Год назад

It reminds of the under the dash power boosters for back in the

@genecase9464 Год назад

Ya, I had one of those from the JC Whitney catalog in the late 70's in my '65 Fairlane. 30 x 2 WPC (or so it claimed) separate Bass and Treble controls and about 40% THD! Add that to the 10% THD from the Kraco head unit and it was a good thing the Fairlane had dual glass-packs so I couldn't hear anything anyway! 😳

@DoItNowMotors Год назад

would liked to have see the current meter on the DC power supply.

@redviking1329 10 месяцев назад

Hey there, hreat review, very in depth and informative. I was wondering if you might review the Fosi BT30D PRO and include a 36V power supply to boost the power. Thanks..

@automachinehead Год назад

they possibly gave you the only one with sumida inductors in it for review ratings but the ones they probably sell en masse won't have the said inductors and have used a different op amp too

@stefanweilhartner4415 Год назад

it for sure offers great value for the money. however, regarding the distortion, i would assume that the power supply section comes through with some distortion once you get to a power level where the 2800µF cap does not have enough capacity to smooth it out. second thing are the output filter coils. they can easy get into saturation at higher output levels. these are the two weak points that i can see from here. and for that money it is not possible to put in some high end coils from coilcraft and bigger low esr caps from panasonic.

@ewingaaron1 Год назад

"irregardless" lol sorry Big-D gotta rib you a little. Love the content as always.

@wal Год назад

Ha! Knew da Engrish teachers would cringe!

@johnpolaski6126 Год назад

Nice

@BIGGIEDEVIL Год назад

Wow very impressive to say the least perfect for ppl that have minimum room

@johnsteger Год назад

Happy Easter everyone

@Geerladenlad Год назад

How about to see you test the PS audio Sprout -100

@fullwaverecked 6 месяцев назад

Great review. You kind of get a remote when using a phone and Bluetooth... Cheers!

@zackjay71 Год назад

I have two jbl home subwoofers. Both amps are toast. Was thinking about using one of these and wiring it directly to the speakers.

@especialistqap Год назад

Please do more video of vintage vs new receiver

@miketerpening3880 Год назад

I noticed you mentioned these small home amps get a lot of attention on your channel. Another reason these are used a bunch for are for bass shakers for home theaters and mostly sim racing. If you were to do a few episodes of the ButtKicker bass shakers actual amps and if they are properly paired for them. A few episodes of common bass shakers smaller and larger (aura’s and Dayton) wattage requirements compared to the amps that people purchase for them, would get a ton of views about those amps. For example a lot of people run the Nobsound NS01-G paired with two Aura BST-1’s and they swear it works great but don’t understand how severely under powered that amp is for two of those shakers. You wouldn’t need to purchase the bass shakers (Dayton TT25-8’s, Aura BST-1’s or the Buttkicker brand shakers), just share an image of them with their required RMS and test the Amazon common amps / share the data of previous ones you already tested to show which amps they should really be using. These would get a lot of views for you from the gaming communities.

@cinderella6788 5 месяцев назад

Smsl DA-9 and Smsl AO-200 audio class D TPA3255 Sound very good👍👍👍

@mrsunshine63755 Год назад

nice

@reconbbs360 Год назад

I have a Aiyima A07 with upgraded Op amps from Sparkos labs. Also rocking a 48v 10A LPS. It powers my speakers in my workshop. It's a straight up beast.

@fritzkabeano1969 Год назад

Where and how much did you pay for your LPS if you don't mind me asking?

@reconbbs360 Год назад

@@fritzkabeano1969 I got mine from a electronics website called digikey. Involves some DIY like wiring in a power cord and locating proper gauge 5.5/2.5 barrel connector. It has a built in fan which was loud so I replaced that with a noctua. I'd say all in I was at around $150.

@reconbbs360 Год назад

@@fritzkabeano1969 It was a meanwell 48v se 450 if I remember correctly.

@reconbbs360 Год назад

@@fritzkabeano1969 Smart move would be to just go to hifimediy and purchase the 48v power brick from them. That's 100 bucks

@fritzkabeano1969 Год назад

@@reconbbs360 That would be an expensive move and then you'd have to make the smart move and ventilate the encloser better. For the cost/watts gained the 36v/6amp power brick is the best choice.

@gasolin75 Год назад

I like the design and color better of the old amp

@acemobile9806 Год назад

Similar amps are all over fleabay, dime a dozen. I dismissed all of them presuming they are junk. I stand corrected at least on this brand. That's rather amazing! I've been thinking of putting together a hideaway "concealed under the eave" audio system for the back patio. This may fit the bill perfectly! Thanks Big D! 🍻 I got another question on hideaway audio for a '49 Hudson I picked up last year. What are your thoughts on what's decent?

@OOnti-dz4jd Год назад

Great video. Can this Fosi amp run a 4ohm Elac UB5 speaker ?

@steveschwartz9421 Год назад

Just checked, these are shipping with a 24V/4.5A power supply for the non-pro, the Pro comes with the 32V 5A Power Adapter; about $20-$30.00 difference. Found a 48V 5A PS for $25.99. Buy the non pro and the better PS for the price of the Pro unit unless someone wants to mess with the op amps. (Iregardless?, c'mon, common use yeah but really, regardless is proper.) Love your vids, appreciate you diving in where no men dare to go - smoke'n!

@gruanger Год назад

Where did you find the 48V power supply

@MrMatthewstrike Год назад

The non pro is max 24v and a different chip (TPA3116 instead of TPA3255)

@steveschwartz9421 Год назад

@@MrMatthewstrike Missed that, and that matters. In that case, I would opt for the pro with the 48V/5A PS. Anyway you slice it, about $30.00 difference from the stock version of either w/the pro unit giving you additinal features too. ;)

@wal Год назад

The pro is the same price with my discount code and it has line level outputs. Well worth going pro IMO. Discount code in pinned comment and video description

@scottbennett3119 8 месяцев назад

Hello, I have enjoyed your channel for years. Does your 20a pro have a little slack in the volume control when turning it back and forth? Thank you.

@Scrufboy Год назад

You got my sub on this for sure... Can I ask that you look into the new Aiyima A07 Pro? I have one and have modified it a bit. I'd be interested in your tests. I have 5 sparkos SS3602 op-amps in mine currently. I vented the chassis, replaced the tiny aluminum heat-sink wafer on the chip with pure copper, re-pasted the chip with Thermal Grizzly Kryonaut Extreme. I also put heat-sinks on the voltage regulators. I think the snr and thd measurements are kind of bad on the A07 Pro compared to this Fosi and the original A07. I might just pick this unit up and give it a go.

@skyoreece9805 Год назад

I would be worried at 48v psu as those caps where rated only at 50v. Maybe if they where 63v etc... would be ok but I wonder have any failed at 48v. Keep up the good work x

@hardtymz2517 Год назад

good call.

@dennissinger7880 Год назад

Sure electronics make 63V My aiyima tpa3251 work whith 36V but have 63V to , verry nice

@frizzlefry1921 Год назад

Like just about everything now days, redline engineering a.k.a. planned obsolescence at its worst...

@fosiaudio 10 месяцев назад

The caps in Fosi Audio V3 is 63V, it is Japanese NCC capacitors. You can have a look.

@JosePerez-cf1ow Год назад

Do a SVS sub next

@smamas114 Год назад

The ne5532 also find in my logitech z906 :D

@maxwellj7985 Год назад

Which do you like better, this Fosi or the Ayima A07 Pro?When did you test the A07 Pro?

@marioslaz81 10 месяцев назад

I would like too see a test with 36v 10A power suply. I use a 36v mean well with my bt20a pro and would like to know the differences....

@nicolasaubaret8585 7 месяцев назад

Hello, I have 6 ohm speakers, will it work correctly with that amplifier? Any one you recommend from fosi? thank you and excellent video

@PoXFreak Год назад

I'd ask you to try a board with the 8954TH, but the things have quadrupled in price in just a year. I paid $43 for a dual chip board claiming 420 watts x2, and now a similar board is $168, and they require their own 28-0-28 volt transformer.

@ChrisDIYerOklahoma Год назад

EXCELLENT review. No 2-ohm load test? Curious how it handles that load because speakers' impedances are all over the place. Things I don't like about this amp 1) the Bluetooth vs AUX input is not selectable. ie -- it overrides either/or. 2) should come standard with a 48v adapter vs the crap 32v ones 3) that copper knob is gayy looking (it can be swapped out). Overall, solid video (always awesome to see what you do!)...looks like a solid little performer with sound quality.

@wal Год назад

Watch all the way until the end for the 2 ohm test

@ChrisDIYerOklahoma Год назад

@@wal - OMG, how did I miss that? The amp doesn't like 2 ohms very much

@cpufrost Год назад

Surprised at the the amount of flat topping going on with the certified tests. Definitely pushing things too hard for this box. I wonder how clean the DC is coming into the unit as those power supplies seem a bit sketchy! GaN based bricks used for high end laptops can deliver 300+ watts continuously and are fairly clean and certainly won't blow up! It would be interesting to test that amp with a decent lab power supply that can allow for the max input voltage and maintain regulation.

@FATSIDEDOWN Год назад

The adverb irregardless isn't a real word... Just say "regardless".. Fantastical review though. Love the channel

@bdown8 Год назад

How did you test the pre-out? Did you feed the input with an increasing level signal or was it at fixed level and you raised it with the volume knob on the fosi? I'm just curious about its working, if pre-out has a fixed gain (in a line out fashion) or if is it possible to control it from the fosi volume knob.