In my system: Tap X autoformer preamp (own, very pure clean sound with exceptional high freq), LDR preamp (borrowed), Audio Research Ref 5 (borrowed), Gary Dodd battery powered tube buffer preamp (borrowed, very very good sound), Audible Illusions (owned), Threshold FET 9 (owned), and Placette passive (borrowed).
In other systems I am familiar with: Rowland Criterion, VTL TL 7.5, Atmasphere MP1, Bolder 2010, and Music First passive transformer preamp.
In other systems I am familiar with: Rowland Criterion, VTL TL 7.5, Atmasphere MP1, Bolder 2010, and Music First passive transformer preamp.