I saw the phi beta at a dealer when I was looking for a turntable last year and didn't even want to hear it for fear that my heart would lust for something that I am not likely to get for a LONG time. The choice of tubes greatly changes the sound.My experience with the VAC Phi 110/110 was that tube rolling did not make an appreciable difference in the sound of the amplifier, and the stock VAC tubes were my preference after having tried several well regarded 6SN7 and KT88 variants including 1969 Genelex Gold Monarch.
Maineiac (System | Threads | Answers)
Perhaps tube rolling in the VAC Avatar Super has a more definite effect.

