VTL with KT120 tubes

They would tell you the heater windings in the transformers are inadequate and might possibly damage the transformers.  So, no, not me.  But the KT90 designs of VTL and Manley, on the other hand, are begging to be run with KT120s.

As curious as I am, I don't have the stones to try it. I have a S-400 II. It sounds absolutely divine with Tung Sol 6550s, and NOS Mullard and RCA small signal tubes.

Hi, for me the best tubes for this units, KT 88 Golden Lion