Keith - I think you are correct. The MC275 V6 has great drive and dynamics. That being said, I dipped way way deep into my stock of tubes and brought out some NOS GoldLion KT88's and 1940's RCA 6SN7's - put them in the VAC phi200 and it took that amp to a whole new level.
I would say the VAC phi200 is now a notch above the Mc275 right now. I can't tell you just how bad the stock tubes are in that amp.
In the 275 Mk6, I'm using SEC 6550C's in V8, V9, V10, V11 and 18ECC''s in V1 & V7, CV4024's in V2 & V6 and E83CC's in V3 & V5. In V4, because its not used when using XLR outputs, I'm using some throwaway 12AX7 tube.
That being said, I am eyeing the Line Magnetic 219ia to try - the beast!
I would say the VAC phi200 is now a notch above the Mc275 right now. I can't tell you just how bad the stock tubes are in that amp.
In the 275 Mk6, I'm using SEC 6550C's in V8, V9, V10, V11 and 18ECC''s in V1 & V7, CV4024's in V2 & V6 and E83CC's in V3 & V5. In V4, because its not used when using XLR outputs, I'm using some throwaway 12AX7 tube.
That being said, I am eyeing the Line Magnetic 219ia to try - the beast!