3e audio A7/A7 Mono Amplifier Review

[KL....]

Rubycon doesn't make the YXF anymore and they don't specify the ESR in the datasheet.

But the point is, if you advertise A you should sell A not B, we have a word for that kind of practice.

Thank you, what did @3eaudio suggest/say about this?

 

[Good Vibes]

I had to check my unit, I have the Rubycon caps too. I know very little about that side of things but I did very much buy into the info listed by them regarding the use of the ELNA Silmic ‘highest grade audio capictors’. Can anyone enlighten me if these changes are likely to impact the measured performance of this amp?

 

[KL....]

I had to check my unit, I have the Rubycon caps too. I know very little about that side of things but I did very much buy into the info listed by them regarding the use of the ELNA Silmic ‘highest grade audio capacitors’. Can anyone enlighten me if these changes are likely to impact the measured performance of this amp?

Thank you, if these caps are for Rail Filtering and for Power On/Pop/Charge & Power Off/Pop/Discharge noise then which is better, @3eaudio can advise. It could suggested that Signal is not directly passing through these Caps, and as such not Decoupleing Caps, but @3eaudio can advise, can't they?

 

[ziggurcat]

Rubycon doesn't make the YXF anymore

Doesn't it say YXF on the caps in your photo here?

3e audio A7/A7 Mono Amplifier Review

Hi there, Can someone explain to this electric noob, why the A7 Mono has two slots for two OPAmps but is only equipped with a single one? My best guess would be they're using the same circuit board for all models, but the mono one is only equipped with one OpAmp, as it's, well, Mono. Correct...

www.audiosciencereview.com

 

[saberger0357]

I love the amp, but I'd like very much to hear from @3eaudio on this.

 

[3eaudio]

these 4 caps improve the stability during power on and off,no impact on audio performance,it will applied on up coming new model also.

 

[saberger0357]

these 4 caps improve the stability during power on and off,no impact on audio performance,it will applied on up coming new model also.

Great. But your current advertising specifically indicates that Elna Silmic II caps are being used "that exhibit superior acoustic characteristics". This needs to be addressed.

 

[Deleted member 88295]

these 4 caps improve the stability during power on and off,no impact on audio performance,it will applied on up coming new model also.

These caps are connected to ground and to V+ and V- of the op amp. Their function is to provide a stable, low-impedance power source by filtering noise and supplying transient current demands

Got nothing to do with power on off.

 

[ziggurcat]

Great. But your current advertising specifically indicates that Elna Silmic II caps are being used "that exhibit superior acoustic characteristics". This needs to be addressed.

I'm not convinced that it even matters.

 

[saberger0357]

I'm not convinced that it even matters.

You’re not convinced false or misleading advertising matters? Interesting

 

[ziggurcat]

You’re not convinced false or misleading advertising matters? Interesting

If you can prove that there's a measurable difference that actually affects the performance of the amp, by all means...

 

[john61ct]

It may not matter to the performance of the product.

But advertising should be truthful regardless.

 

[antcollinet]

The capacitors used will not affect the sound in any audible way.

But if they make a big deal of using a particular type in their marketing - then that is what they should use. Or take the statements out of the marketing. For their own benefit more than anyone else's. If for no other reason than to avoid damaging conversations like this.

 

[SMen]

The capacitors used will not affect the sound in any audible way.

But if they make a big deal of using a particular type in their marketing - then that is what they should use. Or take the statements out of the marketing. For their own benefit more than anyone else's. If for no other reason than to avoid damaging conversations like this.

Yes, or make the marketing more about ongoing pursuit of excellence. 3e changed their op amps from the OPA1656 to OPA1612 on the A7 and A5. Who knows, maybe they measure better?

My general take would be, what do people make of the company 3e so far? Are they trying to wring the best performance out of their products, or are they cheapskates?

Personally I think they have an ethos more related to the former: performance. And, no doubt, they will have a couple more products in the pipeline they will be wanting to build on the former design goal also.

 

[ziggurcat]

It may not matter to the performance of the product.

Then who cares. If cap A and cap B offer the same level of performance, it's completely moot.

The capacitors used will not affect the sound in any audible way.

But if they make a big deal of using a particular type in their marketing - then that is what they should use. Or take the statements out of the marketing. For their own benefit more than anyone else's. If for no other reason than to avoid damaging conversations like this.

It seems the only people making a big deal are those who are nitpicking about the type of capacitors that are used. I know there was already some discussion about those capacitors earlier (either in this thread or one of the other two threads about this amp here), and there being some sort of discussion regarding there being a limited supply due to them no longer being in production or whatever. If they ran out of stock, and had to change to a different capacitor that doesn't affect the amp's performance, I honestly don't care, and neither should anyone else. I didn't buy the amp because of the capacitors that were cited in an image on AliExpress.

 

[antcollinet]

It seems the only people making a big deal are those who are nitpicking about the type of capacitors that are used.

It seems to me they are making quite a big deal of it, including how much better the capacitors they are waxing lyrical about will improve the sound. If they are going to make statements like this then they should do as they say they do. Or remvove the statement. Anything else is a bait and switch - regardless of any real audible benefits.

 

[SMen]

It seems to me they are making quite a big deal of it, including how much better the capacitors they are waxing lyrical about will improve the sound. If they are going to make statements like this then they should do as they say they do. Or remvove the statement. Anything else is a bait and switch - regardless of any real audible benefits.

View attachment 484565

You need to include the link to where the statement was made. This image is not referenced. Could be anyone.

 

[john61ct]

Yes absolutely. Credibility of the brand suffers if the marketing is continuing to make false statements. Updating your copy to reflect changes is not too much to ask.

Who knows, maybe the new parts are an improvement??

 

[ziggurcat]

Anything else is a bait and switch

Bait and switch only applies to retailers that offer an item on sale/at a low price (and the retailer purposefully doesn't order in enough stock) only to tell the consumer when they arrive to the store that they are "out of stock", and then upsell something that is much more expensive.

 

[antcollinet]

You need to include the link to where the statement was made. This image is not referenced. Could be anyone.

A simple browse of the 3e audio website, and you'd have found it, that's what i did.

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