Amps which are Great, but either Unknown or Underpriced

I have several McCormack amps modified by Steve McCormack.  It's a great option if you're looking for SOTA performance for a fraction of the cost.

While he used to offer certain mod packages, I think it's totally variable nowadays.  Whatever your budget, preferences and associated equipment...he can make an amp tailored to you.

Another great advantage is that you never have to pay dealer markup again.  Just buy one of his used stock amps for next to nothing and have him modify it.  Then you could have an amp that would retail for $20k+ depending on what options you choose, but you only paid a fraction of that.

Occasionally, you will see a modified version of his amps up for sale, but most people hang on to them.  Your best bet is to find a used DNA.5 on ebay.  These are the cheapest to find and one of their favorite to mods.  It will also drive most any speaker and, if you need more power, just get 2 DNA.5 for monoblock conversion.

If you want to go tubes...I would say that Rogue Audio is probably under-priced and under-appreciated.  David Berning amps would also be on my list for certain applications/systems.

Second Line Magnetic, great amps, ultra reliable built like a German Tank not a Russian one, with a great sound, at a great price..
Also Opera Consonance, real class sound, excellent reliability, and beyond reproach build quality.

Emotive Audio (PA, USA)

After 20 years in the hi end, no component I've heard makes me shake my head in disbelief more than when i see a $1,700 sticker on the Job 225.

I have a Parasound A21 and a Line Magnetic 216 Integrated Tube amp in another system. So I agree with those who have listed these two. Just great products.