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

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9 күн бұрын

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Пікірлер: 58

@gregmatula9749 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

Same here!

@tamersosman 8 күн бұрын

How it sounds compared to fosi za3 and A07max?

@gilpena9591 8 күн бұрын

Hooray for new reviews

@MattCoykendall1 8 күн бұрын

You know it!

@Brian_Romska 8 күн бұрын

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!

@thinkIndependent2024 6 күн бұрын

Great coverage of the important points

@seanb3303 8 күн бұрын

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

@DonnieMulligan Күн бұрын

Great info Matt. Keep it up!

@MattCoykendall1 11 сағат бұрын

Thanks for watching!

@sabrowenie 6 күн бұрын

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.

@tonymolina7744 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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.

@mikecampbell5856 7 күн бұрын

Cool little amp Matt. Maybe some day you will have to do a tier video of all of your amps.

@MattCoykendall1 6 күн бұрын

I really should

@mattmiller4978 6 күн бұрын

And ABX test them for us!

@chinmeysway 8 күн бұрын

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

@MattCoykendall1 4 күн бұрын

It's all about the journey...Ha

@crazyprayingmantis5596 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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 8 күн бұрын

Yep .... kzfaq.info/get/bejne/pd5dgc6qqqy4naM.htmlsi=jF8U1Ww4MlhGjKz8

@NeilBlanchard 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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

@NeilBlanchard 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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 8 күн бұрын

@@MattCoykendall1 Okay, thanks!

@Douglas_Blake_579 8 күн бұрын

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.

@chinmeysway 7 күн бұрын

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 7 күн бұрын

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 4 күн бұрын

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

@D1N02 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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

@chinmeysway 8 күн бұрын

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

@uribar-ner5055 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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

@uribar-ner5055 8 күн бұрын

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

@Douglas_Blake_579 8 күн бұрын

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

@chinmeysway 8 күн бұрын

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

@MattCoykendall1 8 күн бұрын

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 4 күн бұрын

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

@Douglas_Blake_579 8 күн бұрын

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 8 күн бұрын

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 8 күн бұрын

they do have one w that description actually

@Douglas_Blake_579 8 күн бұрын

@@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 4 күн бұрын

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

@Douglas_Blake_579 4 күн бұрын

@@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.

@pattygraham830 6 күн бұрын

Blink dude, just blink

@MattCoykendall1 6 күн бұрын

Nah

@nathanaelcole8466 7 күн бұрын

Is Aiyima and Fosi possibly ran by the same company? Or just a lot of copying!

@MattCoykendall1 6 күн бұрын

Not that I am aware of

@BicycleJoeTomasello 8 күн бұрын

Yeah, totally uninterested in this POC

@ropeburn6684 7 күн бұрын

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

@MattCoykendall1 7 күн бұрын

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

@Douglas_Blake_579 4 күн бұрын

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...

@athathsonty2925 4 күн бұрын

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.