Power Amplifier - Maximum Resolution & Detail!

Probably down the scale from your consideration, but I had the same experience with my equipment.  Using a Rogue Audio RP-7  preamplifier (tubes) with a highly-regarded tube power amplifier that replaced a Benchmark AHB2 driving my Fyne Sudio F-702s, I concluded that the switch resulted in lost definition, some imaging degradation, and inaccurate tonal qualities of instruments.  After extensive research, I replaced the tube power with two Odyssey monobloc amps, extensively upgraded Stratos amps, almost Kismets.  WOW!  I now had back all that I felt I had lost in terms of those three considerations.  The clarity is superb, instrument location is quite good—expanded both in depth and laterally, and the tonal qualities of the musical instruments are excellent; and there were improvements in bass reproduction, although I am still researching gradual upgrades, including from my older Definitive Technology Supercube 6000 subwoofer (perhaps the Paradigm XR11), as well as a new DAC (maybe anYggdrasil MIB?) and streamer upgrades (likely an Innuous Zen MK3).  I realize that there are system far better than mine, but I am quite pleased with the musical qualities I am getting with my system.

So, yes, the change brought more detail and improved sound quality … without “breaking the bank.”  

Benchmark AHB2 brings out details in music that most people will never here.  As @ghdprentice mentioned, it can be too much of a good thing.  I took his advice and brought in amps that are more emotionally engaging to me.  

The Hegel H590/H600 integrated amplifiers (used as amp/preamp only). Absolutely incredible!!! High current/damping factor that can drive anything with authority, beautiful fine detail and transparency, super dynamic, layering, air, sound staging, height, depth, width, neutral and natural sounding but doesn’t lack a degree of warmth. The H590/H600 are world class, reference caliber sounding pieces of high end audio kit and, IMHO, an unbelievable value .  A couple years ago, I moved from a very large listing room to a smaller room in the house and space became an issue so I replaced my separates with a Hegel H590.  The H590 made me forget all about the separates.  I’ll probably never part with my H590 as it’s just absolutely phenomenal driving my Revel Salon 2 speakers.   Happy listening.

I believe there are some excellent options- CH Precision, Boulder and others and I am biased to Audio Research when cost is no option. 
 

Audition, audition and audition some more. It was valuable in me understanding my preferences. Ultimately we all compromise in some way😊

@deep_333  It would seem there are as many great amps as there are members offering opinions.  I assume many are recommending what they have in their own system.  So I'll just give a +1 to Hegel amps.  I've owned three, working my way up to the H30's in fully balanced mono blocks.  I recently sent back a pair of $70,000 (CDN) BAT REX 3 Tube mono blocks as they provided not an iota of sound improvement over the H30s ($27,000 CDN for the pair).  My manta has become "only shop where they have a 100% no questions asked return policy"  Good luck with your quest.