Let's replace the op amp in the Douk Audio U3 Amplifier and hear the difference. And I get stabbed.

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Let's listen to the difference when you replace an op amp in a Douk Audio U3 Amp. I have no idea what I'm doing so watch me try and figure it out and get stabbed with one.
00:00 Intro
01:27 Stock amp sound
03:57 Replacing the stock amp
04:49 BB op amp
7:40 Replacing the BB amp (and getting stabbed)
9:00 Todiys amp and conclusion
If anyone wants the op amp models let me know in the comments thanks for watching!
The first alternative option I showed is the OPA2134PA from Burr Brown 2rd OP amp is the Todiys LM4562NA which I found both on Amazon.

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Опубликовано:

17 июл 2024

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Комментарии : 49

@ryanmelvey8764 8 месяцев назад

seems like a fun amp and easy to mod. the enclosure looks nice too

@hackinghifi4247 7 месяцев назад

It is! Definitely recommend

@dijxie 2 месяца назад

Actually it is a pretty good headamp, especially for the money. I've replaced op amp in mine with muses 8820 and... sold my Topping L30. It is more fun for me to listen to music on this setup.

@mikeywisniewski Год назад

Definitely heard the Burr-Brown bass compared to the stock. That’s a nice aggressive sound for the dance floor. Will try that op-amp in a DJ controller to see how the dancers respond.

@hackinghifi4247 Год назад

Sweet! Let me know what feedback you get if you don’t mind.

@magicscreengames4353 2 года назад

Why is the third Todiys much quieter? What is the exact types of the op-amps? Todiys TL072CP for example? Thanks for the video!

@hackinghifi4247 2 года назад

I must have made an adjustment in the audio level without realizing it I noticed that as well. In practice it's about the same volume. I'll update the description with the op amps thanks for watching!

@axaro1738 7 месяцев назад

Great video, the OPA2134PA is currently EOL and I can't find it from non-chinese retailers (I'm honestly scared to buy fakes). Do you have any recommendation for OPA2134PA alternatives in 2023? I'm currently browsing the lowest THD+N chips by Texas Instrument like the OPA1612, OPA1611, OPA1622 and the OPA1632 but I'm not entirely sure of what I should be looking for to prevent compatibility issues. The stock NE5532 and the OPA2134PA apparently have very different operational specs, does any OPAMP work as long as the form factor is identical? (I have no issues with soldering if needed) Thank you again for the video!

@hackinghifi4247 6 месяцев назад

Sure thing! As far as I can tell the form factor was the same I think you can use whatever you like.

@nadtorus Год назад

Does the stock amp has neutral sounding character? Or do I need to look for other op amp? I'm looking for neutral sound since I sometimes will be using it for assisting in audio mixing process.

@hackinghifi4247 Год назад

It’s been a while since I listened to it stock but it has less bass than some of the replacements so I’m assuming it’s more neutral. Thanks for watching!

@metalupyourass616 Год назад

Yes

@kmahamk 2 года назад

Thank you. What is the best op amp which suits this?

@hackinghifi4247 2 года назад

It depends on what kind of sound signature you like. The Burr Brown has a nice bass extension which I really enjoyed.

@necrodh Год назад

my favorites for just enjoy music are the trulis ha8802 it have some oldschool musical analog flavor , then if you want more analitic crisp sound the truliz ha8801 is just perfect, no need to invest in more expensive op amps with those two, its like some nerd just did the resume of perfect op amps for headphones in just two flavors. the douk u3 is a very nice amp, it works better at 12v instead of using a 5v cellphone charger or usb port, im planning to recap mine with some nichicon caps

@hackinghifi4247 Год назад

Thanks for your input! Can you explain how the 12 volt charger works and where to buy one? I’ve been worried since I tried an hdmi splitter with the wrong adapter and smelled molten plastic lol. Also how I go about buying the op amps you mentioned. Thanks!

@necrodh Год назад

@@hackinghifi4247 just use some laptop one

@nunyadambidniss Год назад

Main thing with me is CLARITY. It doesn't have to be absolutely neutral/sterile but it MUST be clean &open with enough bass going on :) So w/e gives you that is what I'd want :)

@rhyselliott9170 9 месяцев назад

So you have a link for 12v? I'm noon. Cheers

@gs-nq6mw 7 месяцев назад

I think you dont necessarly need 12V,you just need to feed it more than 5W

@CRAZYCRADER 2 года назад

Thanks for the video I own the same amp ..I was curious if it made a difference there a slightly difference. Better ? That's subjective I believe !

@hackinghifi4247 2 года назад

No problem! Thanks for watching. Yes I think it definitely makes a difference, but it's more about what sound you like vs better or worse.

@CRAZYCRADER 2 года назад

@@hackinghifi4247 I personally Happy with the amp sound stock n has plenty of clean power it's a steal at $40 off Amazon!

@hackinghifi4247 2 года назад

@@CRAZYCRADER It definitely is a steal, especially with good power supply for it. It's super powerful!

@CRAZYCRADER 2 года назад

Im using it with A LG v40 phone with a Quad Dac drive my Sivga Robin headphones the amp brings out the best in the headphones sounds. asboultly amazing definitely worth $40 easily. I bought more expensive amps none not near as good.

@radicroot 5 месяцев назад

Hi, I bought the u3 to replace my Kenwood basic c2 connected to the PC as a headphone amp but I was disappointed by the 30-40hz zone which on the U3 is much lower than the Kenwood preamp. Do you think that by replacing the 5532d I can get more presence of that bass? Which ones? Thankyou.

@hackinghifi4247 5 месяцев назад

I found the amp did make a difference in terms of tone, definitely for bass. Plus it’s fun to try different things. I did a walkthrough on setting up equalizer apo also, you could probably get the same thing from that just using free software if you want to try that.

@JeradBenge 2 года назад

If you ever find a Muses 8920D (under $10) laying around, you should throw that in there and give it a whirl.

@hackinghifi4247 2 года назад

Cool thanks for the heads up. Have you tried them?

@JeradBenge 2 года назад

@@hackinghifi4247 I have, and it is an effective upgrade for the money that seemed tailored to my Rode NTH-100's, and HD580's. I ended up swapping the caps to Nichicon as well, and landed on a Muses 02 opamp ($45), but I already had that to spare from another amplifier build. I wouldn't recommend buying an 02 for this as it destroys the value proposition. It is exactly my cup of tea though.

@hackinghifi4247 2 года назад

@@JeradBenge awesome thanks for the info! I may try that in the future. I was surprised at how much of a difference the op amps made.

@Panslapper Месяц назад

@@JeradBengeMuses 8820D/8920D, BB2604, Oracle 2.....

@JeradBenge Месяц назад

@@Panslapper OPA1656 has come down so far in price that it kind of eclipses those choices, although the oracle 2 might be more your thing if you like warm and smooth, or can't find an OPA1656 on a dip8 adapter, and don't want to solder.

@mrnobodyz Год назад

Hi, Why are you adjusting the pins before inserting?

@hackinghifi4247 Год назад

They weren’t lining up right! Thanks for watching.

@mrnobodyz Год назад

@@hackinghifi4247 Thanks, just checking as I plan to roll an op amp soon for the first time and am a little nervous.

@hackinghifi4247 Год назад

@@mrnobodyz it’s not a big deal just know they’re very bendy so be super gentle putting them in and you can make small adjustments if you need to with a little pressure.

@mrnobodyz Год назад

@@hackinghifi4247 Great. There is a “female holder” included with the the first op amp I ordered and I practiced popping it in and out so I’m feeling more confident since I left the comment.

@mrnobodyz Год назад

@@hackinghifi4247 I just rolled the op amp on bedroom DAC (oracle 02) the smell of burning DAC (circuit board?) alerted me to the fact that I got orientation wrong first try😬 Seems alright, sounds great. Not 100% sure the Chinese bought “Oracle”is legit so will get a different, better op amp for my main system DAC. Great fun!

@gavingranado2146 Год назад

How do you open up the unit

@hackinghifi4247 Год назад

There’s screws in it then the top slides off if I remember correctly

@gavingranado2146 Год назад

@@hackinghifi4247 oh the screws at the back? I thought I needed an allen key because of like the hex nuts on the front panel but yeah thanks man. Very nice vid

@hackinghifi4247 Год назад

@@gavingranado2146 sure thing! Thanks for watching