Over the past few years I have been evaluating higher powered amps (and saving coins) to replace my Parasound Halo JC 1 monoblocks. My research kept leading me back to the Pass Labs X600.5 monoblocks. I will take delivery of a pair next week.
600 watts into 8 ohms (400 watts for JC 1)
1200 watts into 4 ohms (800 watts for JC 1) (my modified SDA SRS 1.2TL's are 4 ohm equivalent speakers)
Class A watts: 80 (compared to the JC 1's 29 watts class A)
Weight: 132 pounds (64 pounds JC 1)
The X600.5 is taller than the JC 1's, but has approximately the same size footprint, so it will easily fit in the same cabinet space. The X600.5 idle heat sink temperature is only a little more than the JC 1's (122 degrees F compared to 118 degrees F). If everything works out, the JC 1's will be traded in.
I'm hoping the X600.5's will be great compliments for my Pass XP-30 line stage preamp and Pass XP-25 phono preamp. I actually was planning to make this purchase next year, but the dealer (Reno HiFi) made me an offer I could not refuse.