No issue - they sound really good, although I'll never be able to get my sig line changed to reflect the changes on this forum - a bug in the code...
Glad you are enjoying. Mine were 2nd hand and therefore already broken in. Read that about 400 hours is required on the JC-1's.
Peak instantaneous current is 135 A, if the 132k of output capacitance can supply. Have also read that the JFETs cause a ‘softer’ sound. Although I have no idea if this true. I do know that I enjoy the sound.
My one reservation is the negative feedback (apparently poorly implemented back in the 60s) vs open balanced circuit of the BHK mono’s. Soulution amps have massive negative feedback, but is complete within a few nanoseconds, which supposedly limits (not eliminates?) timing differences on the inverted cancellation.
Here is an interesting article interviewing 9 amplifier designers including Pass, Curl, and a Soulution guy: