Is there such a thing...

The overall sound comes from the combination of all his components, not just the 845 tubes. What speakers does he have? What is the rest of his system.

Duke
My speaker specs are:
Response: 28 to 22 khz Efficency: 89db
Power: 40 to 300 watts Imp: 6 ohms
They may drop down to 4 ohms if driven hard but I rarely go past 10 o'clock on my volume pots.

Herman
His system consists of:
Unison Smart 845 monoblocs
Von Schweikert VR4
Joule Electra LA-100 pre (I think)
BAT tube cd player
Mostly Synergistic Research i/c's

The specs on your speakers are not that much different than his. Can you try his amps in your system?

I doubt you get the same sound with a push-pull pentode amp vs. an SET amp like his.

FYI the impedance of your speakers is unrelated to how loudly you play them. It varies with the input frequency but not the power.

I agree with Herman's suggestion that you give the Unison amps a try on your speakers if possible. Your speakers are certainly in the ballpark.

There are many 845-based amps that I'm not familiar with (the Unison being among them), but among those that I am familiar with I think there are several that would work well with your speakers, assuming you aren't looking for rock-concert SPL's.

Duke

Herman & Duke
Your insight is greatly appreciated. I think I'm just going through denial.

I know the 845 will be able to play my speakers but I'll be giving up a little bottom end for that midrange I'm craving. I told myself that the Aronovs will be my last amplifier, they did everything I wanted them to do until I heard those 845's.

I'll see what I can work out with my friend or maybe see if I can find a pair at a local hifi shop that I can demo.

Thanks
D