Opinions on Parasound A21 & A21+

I use an A21. Happy with sound. And, delighted with recent improvements to sound resulting from replacement of stock fuses with HiFi Tuning Supreme units. Speed and resolution has improved, and sound has more presence. Remarkable improvement for a modest investment. See description of change and account of experimenting with Furutech TF Audiophile fuses in my recent post to following thread:
https://forum.audiogon.com/discussions/hi-fi-tunig-fuses-parasound-a21?page=2 
My system: Bluesound Vault 2 --> Parasound Halo JC2BP --> A21 --> Vandersteen Quatro Wood CT. 
@mulveling@daeone
Curious to hear your impression of comparison between A21 and JC1.

Hey jetter
watch this video dealer name was mentioned with his link 
I can’t send direct message with info 
don’t know why by the way feel free to pm me 

https://m.youtube.com/watch?v=aWacAS1QgR0

I Recently purchased the Halo A21 and A52+. Both sound wonderful. They replaced a Parasound NC 2250 and 5250 in my system. The Parasound product is very hard to beat for the money. 

If if you look at the innards of both the A21 and the A21+ they appear to have very similar topology. The majors gains in the A21+ come from a much more robust Power Supply and refinement of the A21 design. 

I wrote an end-user review of my impressions on the equipment  if interested...

https://www.avnirvana.com/threads/a-subjective-review-of-the-parasound-a21-and-a52-amplifiers.3969/ 

BTW... the high end is extended and pristine with my speakers. I would guess that some speaker/amp/cable combinations may adversely affect the amps ability to deliver full range sound but would think you would have to work very hard, or be extremely unlucky to come across that negatively impactful combination :-)

If it were me and i wanted that 3d hifi sound as OP describes, I would want to know what speakers,  what pre amp, how big the room is, etc.   That amp could be a perfect match or a horrible one, depending on speakers  It does offer gobs of power and is 4ohm stable..    I would really try to steer you towards tubes, might as well really hear the magic.if thats the goal.   .  The poster who says its pure class A, is misinformed, its an AB amp.  Its also not very smooth in the midrange for an audiophile grade amp.  I'm not a fan of Jfet input and mosfet driver stage myself,  

I run the A21 with a pair of Wilson Sophia 2 speakers and I have never for a moment found myself wishing for more. The raw power of the amp complements the dynamic punch of the loudspeakers very well, with a full bottom end, palpable mid-band, and crystal highs. Years ago when I bought the Parasound unit I was listening to other models at local hifi shops, like Rotel, Yamaha, Bryston (oh, how I loved the 4B SS2), and some pricey equipment from Balanced Audio Technology (...sweet stuff...). I really appreciate how effortlessly the A21 performs, letting you pick out singular instruments in detail amidst a layered, complex passage of a recording. Working with some other amplifiers I've also learned to respect the A21's apparent immunity to hum introduced by AC line noise. The transformers in my other home-theater amp sing like birds when certain household devices are running... You may buy one and later fall in love with something else, but you will still feel like you got more than you paid for!