Aiyima A70 - The One You May Have Overlooked...Don't!

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Опубликовано:

2 окт 2024

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Комментарии : 70

@gregmatula9749 3 месяца назад

Great review! I like a standard power switch. The PFFB was a welcome surprise.

@MattCoykendall1 3 месяца назад

Same here!

@thinkIndependent2024 3 месяца назад

Great coverage of the important points

@tamersosman 3 месяца назад

How it sounds compared to fosi za3 and A07max?

@sabrowenie 3 месяца назад

Not interested in the amp. But my wife got me a similar tool for Christmas. It’s proved to be really useful. Wish my case held the bits like this one.

@seanb3303 3 месяца назад

Guessing this sounds like other TPA 3255 chip amps…did you compare to WiiM amp?

@TeslaCollie 2 месяца назад

I'd remowve that red mesh for better cooling

@Brian_Romska 3 месяца назад

Another great vid Matt, so weird on that filter, sub/sat systems have been around for decades now which is why I’m surprised that almost none of these amps have the right format for the sub out, yet, but hopefully with your direct input to them we’ll get there real soon, thanks again!

@gilpena9591 3 месяца назад

Hooray for new reviews

@MattCoykendall1 3 месяца назад

You know it!

@johanakerblad339 2 месяца назад

The sub frequency range is probably easy to change if they use RC filter. Just double the capacitor value and you get 75-150Hz instead. Have ordered one unit for test. Testing is knowing as a designer teached me.

@ruvamsi Месяц назад

The filter range for the sub out is baffling. Too high for any meaningful bass management, too low to use as a makeshift crossover in a 2 way speaker :(

@crazyprayingmantis5596 3 месяца назад

Why can't they get this right? These chi fi companies are so frustrating

@MattCoykendall1 3 месяца назад

I did pass along my thoughts on the filters to their team, they were really receptive of the info. This amp is actually a pretty good buy, I really do like it but it could be so much more with a couple changes.

@Douglas_Blake_579 3 месяца назад

Yep .... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ox-NkyEFTmo.htmlsi=jF8U1Ww4MlhGjKz8

@ryanmccann2539 3 месяца назад

I would like this form factor as a monoblock.

@chinmeysway 3 месяца назад

man it’s so close just some aesthetic issues that really cheapen it’s looks, and the filter issues. so close!

@MattCoykendall1 3 месяца назад

It's all about the journey...Ha

@vincenthernandez3009 3 месяца назад

Hi Matt I'm a NEW sub, Great reviews and Honest feedback for all. Really enjoy your laidback reviews. I couldn't find the Aiyima A70 on Amazon. Keep up the Good work.

@MattCoykendall1 3 месяца назад

From what I gather they sold out and are having some delays getting it back in stock. Thanks for the sub!

@tonymolina7744 3 месяца назад

Hey! The xcool is really, errr, cool. Another fab review. This amp looks to be a steady contender. Nice flexibility. Thanks Matt! 🙃

@MattCoykendall1 3 месяца назад

Hey Tony, how’s it going! I surprisingly find my self using that screwdriver set more often than I thought I would for amp/DAC disassembly.

@athathsonty2925 3 месяца назад

Not impressed. In spite of its relatively massive height, severe limitations on replacement with taller Op amps. Subwoofer goofing. Dual Function Power Knobs fail sooner or later. Deal breaker. Excellent review though. Matt is so pleasant. Thanks for introducing to the excellent Xcool Tool Set. Sorry Aiyima, I prefer to spend my Dollars on Xcool.

@larrygaines7462 3 месяца назад

I have phone jack then splitter straight to sub plate, an 48vdc to fmod 70 hz hipass then to douk 5532 3db for loss from fmod dual monoblock tpa3255. Yep with diy speakers 18's and 8's omg

@jazzabana 2 месяца назад

I have aiyima a08 (the one with internal power supply). It creates miracles once you replace its power cable for something decent. The newer version is called aiyima a200. Interesting that nobody is reviewing that one. I have had fosi v3 and aiyima t9. And I thought they belong to the same tier with their power bricks while a08 or a200 are heads and shoulders above these power brick powered ones. And still have room to improve with decent power cable change.

@michaelborza734 2 месяца назад

I felt the need to know the what the Db meter reading was, and your speaker sensitivity is what? Maybe I'm out of my element here but staying involved with the hifi community seems very relevent. That filter makes no sense at all. I must be missing something. 😏

@RoyFJ65 2 месяца назад

PFFB was part of the SMSL SA400 and VMV A2 amps, one of the reasons they sound so good so glad Aiyima is also taking up this design.

@D1N02 3 месяца назад

Isn't that filter a high pass filter? On their site they describe it as 20Hz~150Hz/600Hz.

@MattCoykendall1 3 месяца назад

It’s only applied to the sub output and selectable between 150-600.

@chinmeysway 3 месяца назад

no it’s low pass which is odd as subs have that often

@uribar-ner5055 3 месяца назад

Can you check please this amp with 48v 10a power supply?

@MattCoykendall1 3 месяца назад

I did use it with a 48v 10amp from one of their competitors as well, no issues at all, sounded great.

@uribar-ner5055 3 месяца назад

Thanks, comparing it to Aiyma a07 max, it seems that the max is stronger. Am I right?

@Douglas_Blake_579 3 месяца назад

@@uribar-ner5055 It's the same power amp chip -- TPA3255 -- that determines the output. They should be equally capable.

@pattygraham830 3 месяца назад

Blink dude, just blink

@MattCoykendall1 3 месяца назад

Nah

@chinmeysway 3 месяца назад

any ideas why this one has only like two reviewers on it? i think it’s been out for a bit now

@MattCoykendall1 3 месяца назад

I noticed the same, from what I gather they ran into some delays/late revisions right before getting these out. They seem to have just recently started getting into buyers hands.

@chinmeysway 3 месяца назад

@@MattCoykendall1 oh ok. thanks fir the reply! ill consider reading the owners manual ps haha

@DonnieMulligan 3 месяца назад

Great info Matt. Keep it up!

@MattCoykendall1 3 месяца назад

Thanks for watching!

@NeilBlanchard 3 месяца назад

It looks to have larger (standard?) size speaker binding posts? Please say what PFFB is?

@MattCoykendall1 3 месяца назад

Hey Neil! They did put full size staggered binding posts on this one.

@NeilBlanchard 3 месяца назад

@@MattCoykendall1 You mention this farther into the video. I edited my post to ask what PFFB is?

@MattCoykendall1 3 месяца назад

PFFB is the Post Filter Feedback. Basically it decreases distortion and prevents a change in the frequency response based on the impedance load of a speaker. The whole topic gets overblown at times but its still certainly an advancement in these budget amps.

@NeilBlanchard 3 месяца назад

@@MattCoykendall1 Okay, thanks!

@Douglas_Blake_579 3 месяца назад

Hi Neil ... good to see you posting here! To add to what Matt correctly told you ... they are taking the actual speaker output and feeding it back to the input chips to even out the frequency response of the output filters. It's better on paper but not to my ears... Experimenting with it per TI's design, I can't hear any difference other than a small drop in gain when it's hooked up or disconnected. As Matt points out, it's another audiophile "tempest in a teacup" issue.

@Douglas_Blake_579 3 месяца назад

Memo to Aiyima ... Get the @$#^#@#$ on-off switch off the volume control!! Seriously ... just put a push on-push off button on the front panel.

@MattCoykendall1 3 месяца назад

As long as the power button isn’t behind it I can live but I get your point here. At least we get a trigger, thats welcomed!

@chinmeysway 3 месяца назад

they do have one w that description actually

@Douglas_Blake_579 3 месяца назад

@@chinmeysway Yes ... The A08, which is not available in Canada. I'm still happy with my A07, which is one of the best TPA3255 amplifiers made.

@chinmeysway 3 месяца назад

no lets tell them to do a switch, a good switch and in the BACK

@Douglas_Blake_579 3 месяца назад

@@chinmeysway A proper switch, yes. But in the back? Seems to me that would be seriously inconvenient if the thing is sitting in a system cabinet.

@flynow5614 3 месяца назад

@MattCoykendall1 3 месяца назад

@ropeburn6684 3 месяца назад

Putting two high end opamps for 80 moneys each into a 180 moneys cheap amplifier seems... questionable at best.

@MattCoykendall1 3 месяца назад

It might be a bold move but if it makes someone happy I’m good with that too.

@Douglas_Blake_579 3 месяца назад

There are plenty of less expensive chips you can use. Some are just a few pennies each. For example the RC4558 chips will give you some improvement for about $0.30 each. You can also try the MUSE chips which run in the $10 and 20 range...

@chinmeysway 3 месяца назад

think i’ll ask around: bad idea to turn it sideways and put some feet on one of the sides? ventilation needs vertical escape so might be cool but i knoW; heat sink isn’t oriented in that way. could measure the temp trying both ways

@Douglas_Blake_579 3 месяца назад

Actually the case is the heat sink. There are vent holes in the bottom that allow air in, so the airflow is up and out the sides. Your best cooling improvement on this case will likely be to remove those silly orange panels from the sides.

@chinmeysway 3 месяца назад

@@Douglas_Blake_579 indeed i will def be removing! should arive on tues day :)