Most transparent power amp

If you can hear a Lamm amp, any of them, they are very transparent.  I have the SET amp, and its very transparent,

Most transparent power amp

You’ll just get personal favourites asking this.

But if you want to do some of your own homework, you may get what you asked.

Pick an amp with low output impedance, with the lowest distortion without having to resort to high negative feedback, and one that is able to drive your speakers without becoming a tone control.
This should give you your best chance to your question. Pity there's no such thing as a passive poweramp, otherwise it would be your answer. 


Cheers George

My Boulder is my ultimate 

awence_carpio
Wilson Audio Sasha break-in time ?

I take it from this speaker thread you started, you have the Sasha’s, then my last statement in the 3rd paragraph,
" and one that is able to drive your speakers without becoming a tone control." should be well considered.

BTW OTL’s and most tubes, even mosfets have no chance driving the Sasha’s without becoming a tone control, you need current at low impedance for these speakers for the amp to stay flat (transparent) across the frequency range.
https://www.stereophile.com/images/archivesart/710Wilfig1.jpg

Stereophile: " Sasha's plot of impedance magnitude and electrical phase (fig.1) reveals the speaker to be a demanding load for the partnering amplifier to drive. Not only does the impedance drop below 4 ohms for most of the lower midrange and upper bass, with a minimum value of 2 ohms at 86Hz, but there is also an amplifier-unfriendly combination of 3 ohms and –43° phase angle at 61Hz."

Cheers George

^^ FWIW we've had good luck with Sashas running our MA-1s. I think it might be helped by a set of ZEROs (www.zeroimpedance.com) but the amp didn't sound like there were any problems making bass despite the Sasha's rather low impedance in the bass region.

I can't speak for other OTLs out there. But since we don't run any feedback, it seems that our amp should have been a problem on that speaker. This leads me to believe that Wilson may have used a tube amp during the design phase of this speaker.