Parasound JC-1 (price lowered)

Excellent pair of JC-1's, purchased new in 2012 - single owner, no issues.  Please read the Stereophile review if you aren't familiar with how good these amps are.
 
From Stereophile (https://www.stereophile.com/solidpoweramps/774/index.html)

Conclusions 
Measured performance doesn't always correlate with actual sound, but in this case, assuming the Parasound Halo JC 1's published specs resemble what John Atkinson measures, there's a strong connection. The specs show ultra-wide bandwidth, high-current capability, low, low noise, a high signal/noise ratio, and a fast slew rate, among many other indicators of outstanding amplifier performance. 

That's what I heard. There was nothing solid-state-sounding about the JC 1—either on top, where it was anything but "hard" or "etched," or on bottom, where it didn't serve up one-note, overdamped bass. If the Halo JC 1 committed any sonic errors, they were on the subtractive side and easily missed. Perhaps some listeners will find the JC 1 too refined and perhaps a tad polite, but I didn't. 

There was an honesty to the overall tonal and harmonic presentation that transcended technological stereotypes. Powerful, refined, smooth, organized, dynamic, transparent, and rhythmically supple, the JC 1 offered a combination of attributes that added up to many weeks of listening pleasure. I'd be happy to have it go on indefinitely—as, no doubt, will many of you. If you need to spend more than $6000 for 800W of stereo amplification, by all means do so, but I'm not sure you'll get much more measured or audible performance—or pleasure—than what Parasound's superbly built Halo JC 1s delivered. A bargain, and highly recommended.