Pops: Sorry I mistated the comment about burning tubes.. I meant they sent me a tubeset for another preamp which burned up and caused the problem and then required it to be shipped back to CJ, when it returned it was really really noisy and unusable, so I had to send it back again, and finally on the third try back to them they quieted it down. The unit sounds very good and has the last of the typical CJ bloom which I really wanted in my system without having a CJ amp. Ultimately after waiting those 6 months of no preamp (they said it would take 2 weeks which became "we haven't looked at it yet." at 5 weeks, it was really frustrating.. Plus they billed me dealer twice for tubes and would not issue a refund.
Your mileage may very.... CJ told my friend on his 2500A amp that the transformer will hum and they wouldn't replace it because that was normal... "Normal?" to hear the mechanical humm from the listening position (not through the speakers?)..