With deference to the above opinions I will still offer that the SP-10 marks the pinnacle of ARCs preamps. It is the last pure ARC design to rectify the power supply with tubes, something now being quasi-revived by various companies such as Asthetix. I don't believe Jadis ever lost the faith in that either. The problem is SO MANY TUBES!. Without the proper complement the magic is easily lost. The SP-10 requires 15 tubes all told but if they're all dialed in the phonostage is incomparable and the line stage almost as seductive. Big "if" however. The SP-10 cured me of tube rolling and convinced me that reliability and liveability have as much to do with "perfection" as sonic absolutes. Unless, of course...
