• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Aiyima A80: TPA3255 Stereo Amplifier with ESS9038Q2M DAC: First Look

I think that the intervention of a moderator who has technical knowledge should intervene in which case Amir himself since it is obvious that he knows his subject well.
I would like to thank in advance the staff of the forum whose intervention will allow readers to read the right information.
Accept my sincere greetings.
I don't see why @amirm or any moderator (who says that a moderator needs technical knowledge, btw?) would step in. You are the only person here completely confusing a fully differential amplifier with differential inputs. You can have the latter without the former, no problem. And the benefit of common mode rejection is absolutely retained in the latter case.

If on the XLR inputs pin 3 was disconnected or (more likely) connected to ground, this would be an unbalanced or - if you like - "fake" balanced input.
If the differential signal on pins 2 and 3 is properly converted into a single ended signal by a symmetrical buffer stage, the input is no doubt a balanced input.

Think about it for a minute.
 
Hello.

You are trying to get me to say what I did not say.

I am not confusing anything.

I say that the TPA3255 chip is designed to work with differential inputs so if we use such inputs I don't see why we wouldn't keep the 'original' input signal up to the TPA3255 chip when the NJW1195 would allow it, which is not the case with the NJW1194 chip, hence the synoptic diagram of the circuit and therefore a not entirely differential operation.

A customer who observes a device with such inputs will imagine (and he will be right) that the amplifier works entirely differentially: which is not the case here.

It would therefore be correct to make this important clarification on the description of the device.

Did you understand me or still don't ?

Think about it for a minute....
 
Hello.

You are trying to get me to say what I did not say.

I am not confusing anything.

I say that the TPA3255 chip is designed to work with differential inputs so if we use such inputs I don't see why we wouldn't keep the 'original' input signal up to the TPA3255 chip when the NJW1195 would allow it, which is not the case with the NJW1194 chip, hence the synoptic diagram of the circuit and therefore a not entirely differential operation.

A customer who observes a device with such inputs will imagine (and he will be right) that the amplifier works entirely differentially: which is not the case here.

It would therefore be correct to make this important clarification on the description of the device.

Did you understand me or still don't ?

Think about it for a minute....
Enough is enough. You said that the XLR inputs on the A80 are "fake".

Please stop now. You've caused enough damage.
 
And just in case you think about editing your previous postings:
Regarding this amplifier, don't be fooled by the 'TRS' (balanced) inputs :mad:

These are 'fake TRS inputs' since this amplifier uses the volume control chip NJW1194
PS: I don't understand why AIYIMA added (fakes) 'TRS' entries that don't bring ANYTHING AT ALL ???
For the 'BALANCED' inputs to be considered 'real', they would have to go directly to the TPA3255 but there is the NW1194 digital volume control that does not know how to do this.
:)
 
Why would I have personally caused 'damage' ?
It was not me who designed this amplifier but the manufacturer.
I'm just observing what's out there, as is the case for all the devices reviewed on this forum.
 
Not taking sides. Our readers are more than capable of doing that themselves. But I am saying enough of the back and forth. You both have made your points. Multiple times. Unless a member requests you further explain. No further continuing arguments are necessary. Sometimes less is more. ;)
 
Why release something like this without a PEQ in 2024? Extremely weird imo!
 
Why release something like this without a PEQ in 2024? Extremely weird imo!
I think the problem is while PEQ itself might be a feature of many DAC chipsets - you need ways of configuring PEQ - a mobile app or a web UI and that is fairly complicated Software, so for a Hardware companies like Aiyima - they would need to hire developers and almost create a separate engineering section of their company (I am saying this as a Software Architect and Engineer).
 
I think the problem is while PEQ itself might be a feature of many DAC chipsets - you need ways of configuring PEQ - a mobile app or a web UI and that is fairly complicated Software, so for a Hardware companies like Aiyima - they would need to hire developers and almost create a separate engineering section of their company (I am saying this as a Software Architect and Engineer).
I wonder if there is room for a universal UI to activate those features that can be sold to either hardware manufacturers (or maybe even end users if it is simply a connect via USB) or if someone is feeling generous, an open source project
 
I think the problem is while PEQ itself might be a feature of many DAC chipsets - you need ways of configuring PEQ - a mobile app or a web UI and that is fairly complicated Software, so for a Hardware companies like Aiyima - they would need to hire developers and almost create a separate engineering section of their company (I am saying this as a Software Architect and Engineer).
Sure, but why even bother getting a good amplifier like this if you can't do room correction for all the sources that you plug in to it? I mean the performance of an amplifier makes almost no differences to the sound quality compared to what a PEQ can do.
 
Hello.

@ Tell:

you are going a bit far in the 'considerations' since in this case why not ask those who offer amplifiers to provide speakers with them since in fact it is the 'weakest' point of a hi-fi system (I am talking about among other things efficiency and distortion level)...

Don't take it the wrong way, it's just a personnal remark in line with your words.

Kind regards.
 
Hello.

@ Tell:

you are going a bit far in the 'considerations' since in this case why not ask those who offer amplifiers to provide speakers with them since in fact it is the 'weakest' point of a hi-fi system (I am talking about among other things efficiency and distortion level)...

Don't take it the wrong way, it's just a personnal remark in line with your words.

Kind regards.
Uhm no that's not in line with my words no. Or do you think it's also in line with my words that amplifier manufacturers should provide rooms as well?
 
why not and human listeners :D
 
why not and human listeners :D
Yeah tbh you're quite silly.
Of course PEQ in this amplifier would make a lot of sense while giving away speakers and rooms does not. Because I really feel this amplifier is pointless without a PEQ since it has everything except exactly that, which makes it impossible to add one unless you want to constrain yourself to just one input.
 
Why talk about it if you find it useless ? Just to say it ? There are other devices that could satisfy your needs, this one will satisfy other people who have other needs...
 
Why talk about it if you find it useless ? Just to say it ? There are other devices that could satisfy your needs, this one will satisfy other people who have other needs...
Because this would probably satisfy my needs if it had. Though I don't know the price but I bet it would be quite low considering what Aiyima usually goes for which would have made it very interesting!
But also because I still think it's weird that a device like this in 2024 doesn't have a PEQ. Everyone and their mothers should EQ their speakers and room :)
 
Yes or use a headset...
 
You are not only utopian but derogatory, which is embarrassing for others :confused:

If you want to do it your way, let others do it as they like.

Enjoy your music since it is said to soften morals ("adoucit les mœurs" <- French expression):

you need it badly and it is not a 'PEQ' that will help you with that :rolleyes:

Good luck to you.
 
Back
Top Bottom