- Roger Modjeski (Music Reference, RAM Tubes)
- Tim de Paravicini (EAR-Yoshino)
- Ralph Karsten (Atma-Sphere)
- Bill Johnson (Audio Research Corp.)
- Max Townshend (Townshend Audio)
- Harvey Rosenberg (New York Audio Labs)
- Keith Herron (Herron Audio)
- Walter Davies (Last Record Preservative)
- Chad Kassem (Analogue Productions, Acoustic Sounds, Quality Record Pressing)
- Brooks Berdan (Brooks Berdan Ltd., hi-fi retailer)
- Randall Cooley (hi-fi retailer)
- Ken Kessler (hi-fi reviewer, author)