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yes but

Is the tested AKM unit Version 1 with AK4490? I couldn't see B letter in the serial number.

there is no way to know that, because there are no 3rd party measurements for a20h unfortunately. However I can confidently say that, setting subjective opinions aside, most balanced dacs have better sinad performances through their balanced outputs so, even if they are the same, performance of...

I ordered from Amazon and it came from germany (I live in Turkey) that's why I asked.

Did you check amazon?

Smsl

Oh about the noise floor, I tested it with a sensitive iem. low gain was similar to sp400 but high gain was much more noisier. No suprises there though, sp400's gain settings are so close that virtually you don't need to change them ever.

Indeed mine arrived yesterday. Haven't used them too much but they sounded just a bit hazier than my sp400 otherwise almost indistinguishable.

Sorry it is a typo on my part :)

About the single ended and balanced power levels, last year I tweeted to the official sabaj account and

waiting for the measurements of the newly announced su-9 pro too. Already checked wolf's measurements though :D

No problem. I imagine you can ask for a price match too from other sites like apos and shenzhen but I'm not sure

For those who are interested, SU-8s is %50 off on Drop for 180$

I remember Goldensound trying to tear A90 apart for his review but couldn't.

To be honest no idea, but I doubt it because there really isn't much of a difference in SP400 different gain settings. :)

Actually somewhere along the line, SMSL or at least Mandy confirmed that SP400's max input voltage is 10 Vrms and their calculations made with 5.5 Vrms which is stacks M400's max output value. Although Amir's measurements are taken with 4V input, potential seems to be higher. There are also...

If what you say is true about medium and high gain, interesting design choice. Definitely a different approach from SP400 which is gain limited and almost never clips. Also I decided to keep my SP400, not because of the power capacity. Both devices are more powerful than I need as you said. (And...

Now it makes a little more sense. Now that I see there was a similar discussion about this topic at page 79 where @JohnYang1997 says lower the volume to avoid clipping, and user @Ddd confirmed their amp, fed by D90 at 4Vrms, clipped at high gain at past volume 1-2 o'clock which is kinda sad. I...

Thanks, I'm trying to understand what did they mean by 5-8. I guess it is 5V max for RCA and 8V max for XLR.

Well, let me clarify. As most of you know, some companies take their measurement with high Voltage inputs to get high output numbers, at least they did at some point. A90 outputs more power at the same 4V than SP400 as Amir's measurements show. However, it is confirmed SP400 can take up to 10V...