I know of a few Supratek's which have needed repairs - including my first Chardonnay - several years ago. In my case, Mick covered the costs to repair locally. My Cortese has been flawless.
Sound wise, it totally depends on the tubes you use. The Supratek can go from annoyingly sterile to deep-dark and overly lush. But regardless of tonal balance, the Supratek remains lively and overall is a "pretty" sounding preamp - which tends to make the rest of your system sound better.
Not-so-good CD players sound better - really good CD players sound good - but not as good as I imagine they could if the Supratek was more transparent - having less character.
I think you'd prefer the Supratek to the ARC.
Sound wise, it totally depends on the tubes you use. The Supratek can go from annoyingly sterile to deep-dark and overly lush. But regardless of tonal balance, the Supratek remains lively and overall is a "pretty" sounding preamp - which tends to make the rest of your system sound better.
Not-so-good CD players sound better - really good CD players sound good - but not as good as I imagine they could if the Supratek was more transparent - having less character.
I think you'd prefer the Supratek to the ARC.