Eversolo AMP -F10 @ Purité Audio London

[Jukebox]

Jukebox to my chagrin, I haven’t actually taken it out of its protective bag!
I have though excuses, one I am waiting for Fred’s ( Boxem audio) new ‘Arthur’ 4216/E2 to arrive to compare and more compellingly I don’t actually have any passive speakers here, but ASCILab are sorting that out!
So soon, I don’t expect there to be any difference based in my past experience, but you never know.
Keith

Thanks for your answer!

 

[Purité Audio]

My pleasure, I have all the other bits, even had to make some speaker cables in anticipation.
Keith

 

[totti1965]

Now we have a nice subjective review on YouTube:

 

[Salt]

Don't do this to Keith

 

[totti1965]

Had a look too.
It's SINAD,taken from it's 0.008% THD+N (probably for 20-20000Hz) is about 102dB.
The SNR (signal to noise ratio) is 113dB (A) weighted with 23dB gain.

Not bad at all.

SINAD 0,008% is minus 81.9 dB
Look at the sengpielaudio calculator: https://sengpielaudio.com/Rechner-klirr.htm

If in this range k2 is dominant, it might be a clue, that it sounds a tiny bit less bright, than perfectly neutral amps.

 

[Purité Audio]

I absolutely must place that video on my list of ‘must watch’ ( I have no intention of ever watching that video).
Keith

 

[Sokel]

SINAD 0,008% is minus 81.9 dB
Look at the sengpielaudio calculator: https://sengpielaudio.com/Rechner-klirr.htm

If in this range k2 is dominant, it might be a clue, that it sounds a tiny bit less bright, than perfectly neutral amps.

Oops, you're right, I added a zero in my mind doing it by heart.

 

[totti1965]

I absolutely must place that video on my list of ‘must watch’ ( I have no intention of ever watching that video).
Keith

Of course, I posted the video purely for entertainment purposes. After all, we're in the audioscience forum!

 

[Purité Audio]

Eversolo AMP F-10 update.
F-10 arrives ( brand new unit) unfortunately one channel down one front LED (VU meters) dead.
U.K. importer collects, two months later unit is returned two channels working unfortunately no front leds!
Not super impressed.
I would hope that if I were a genuine ‘customer’ rather than a retailer ( the importer is both retailer and ‘distributor’ ) they would have exchanged immediately for a another unit.
Waiting for importers to arrange collection again.
Keith

 

[Thighsofsteel]

Eversolo AMP F-10 update.
F-10 arrives ( brand new unit) unfortunately one channel down one front LED (VU meters) dead.
U.K. importer collects, two months later unit is returned two channels working unfortunately no front leds!
Not super impressed.
I would hope that if I were a genuine ‘customer’ rather than a retailer ( the importer is both retailer and ‘distributor’ ) they would have exchanged immediately for a another unit.
Waiting for importers to arrange collection again.
Keith

agree. In fact rather poor.

 

[Purité Audio]

Collection scheduled ( again) for tomorrow, it’s probably nothing more than a loose cable but if the design can’t withstand courier handling…
Keith

 

[Jukebox]

Some first measurements from Poland

EVERSOLO DMP-A10 / AMP-F10

Dopóki marka EverSolo skupiała się na popularnych streamerach, dopóty była jedną z wielu tego typu nowych inicjatyw. Zrobiła w tej dziedzinie ...

audio.com.pl

Not the best measuring amp, for sure not even close with their DACs and I think is on purpose maybe?!
I mean for sure they could get better numbers, judging from all their other released products so far, but decided for a tailored sound/distortion profile...very interesting move from EverSolo.

 

[Sokel]

Some first measurements from Poland

EVERSOLO DMP-A10 / AMP-F10

Dopóki marka EverSolo skupiała się na popularnych streamerach, dopóty była jedną z wielu tego typu nowych inicjatyw. Zrobiła w tej dziedzinie ...

audio.com.pl

Not the best measuring amp, for sure not even close with their DACs and I think is on purpose maybe?!
I mean for sure they could get better numbers, judging from all their other released products so far, but decided for a tailored sound/distortion profile...very interesting move from EverSolo.

View attachment 459176
View attachment 459179

SINAD at 1kHz in the 70's is 10dB worst than what they are officially stating.
It's ok-ish to bad at this time and age.

Decent power though.

 

[Purité Audio]

I look forward to actually hearing my example!
Keith

 

[Sokel]

I look forward to actually hearing my example!
Keith

If noise is at check (which it seems to be) I wouldn't expect any audible effect compared to any other decent amp.

 

[respice finem]

For me, the perfect Q.E.D. why it's worthwhile to have stuff measured externally, regardless of manufacturer and price.

 

[Purité Audio]

I haven’t had a ‘traditional’ class A/B amp here for years, last amp was AHB2’s subsequently almost totally active speaker designs.
I really can’t see why anyone would want one, Boxem’s Purifi is simply Arthur are better in in every regard.
Keith

 

[Coltr@ne]

If noise is at check (which it seems to be) I wouldn't expect any audible effect compared to any other decent amp.

We are talking about a power amplifier, it can only be considered in relation to the load, the measurements that must be made and looked at are quite different. Voltage and current capacity referred to impedance, module and phase.

 

[Sokel]

We are talking about a power amplifier, it can only be considered in relation to the load, the measurements that must be made and looked at are quite different. Voltage and current capacity referred to impedance, module and phase.

That's absolutely correct, couldn't find FR measurements related to load with a decent BW though.
I assume that at this time and age (²) it would be load invariant, or else is a gigantic fail.

 

[Purité Audio]

The U.K. importers have agreed to issue me a credit for the F-10, my feeling is Eversolo should stick to what they know, having said that I have ordered their new ‘Play’ all in one just to try with the Ascilabs, a complete small room system of the highest quality ( if the amp works) for £1300 ish.
Keith