If you are really running separate amps not channels for the treble and mids on one and using another amp for the bass, then you can use different tubes. I think it should sound good or great. BTW how did you set up your crossovers?
ever used KT88 for bass and el34 for mids/treble
I run two Prima Luna prolouge 4 amps as momo blocks in my set up. I built my own cross overs for each driver, so I can bi or even tri amp my speakers. I use channel one for bass and channel two for mids and trebble on each prolouge four. My question is what do you think would happen if I used KT88's for the bass and el34's for the mids and trebble. Maybe best of both worlds? Any ideas? The primaLuna amps have auto basis, so I can use any combo of tubes I want.