The biggest problems that i've seen with trying to run a tubed preamp with an SS power amp had to do with impedance mismatches. Due to the way that most gear is ( poorly ) designed, you have to factor in a HUGE impedance mismatch when going this route. That is, most tubed pre's want to see a very high input impedance on an amp. Trying to run a tubed pre with an SS amp that has a lower input impedance typically results in a very warm, syrupy thick bloat that sounds terrible. So long as you can keep the input impedance of the amplifier kind of high, you shouldn't run into too many problems. Otherwise, you may end up spending a fortune on cabling and tube-rolling trying to resolve a basic electrical mismatch. Sean
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