Audiophilepure

https://www.enjoythemusic.com/superioraudio/equipment/0423/Dan_DAgostino_Progression_S350_Amplifier_Review.htm

I also must stress that most of the time when listening to this album, I was luxuriating in the sensation of being enveloped by the music on Led Zeppelin II, a recording that I must have heard a thousand times previous to that day. Despite this, before the D’Agostino S350 was in my system, I don’t remember ever having the experience of whipping my head around because I thought I heard something entering my listening room from its far corner. Of course, I’d quickly realize this was a tambourine or other percussion instrument entering the perimeter of the huge soundstage.

The frequency extremes the Dan D’Agostino Master Audio Systems S350 reproduced were extraordinary; never before have I heard a treble sound so extended yet so natural sounding. I’ve had experience with tube amps that had a seductive treble, one that sounded as if it possessed the gestalt of the real thing. Still, the S350 came close to doing this, but at the same time, no amplifier I’ve previously auditioned gave me the impression that I was hearing as close to what was exactly on the signal feeding it. Transparency is the name of the game, and the D’Agostino Progression S350 sound quality possessed what I would call, without exaggerating, the epitome of transparency.

After the D’Agostino S350 was in my system for a while, I never became accustomed to its supernatural sound. Never before have I had a component in my system that made each musical selections, regardless of how many times I’ve heard it before, sound as if I’ve never really heard it. I could use this amplifier to demonstrate every audiophile characteristic that one would desire, frequency extension, transient response, micro and macro dynamics, soundstage, imaging, etc.