I know the gentleman who makes the Whammerdyne equipment; he is local to me and has serviced multiple tube amplifiers for me. He is extraordinarily kind, has a tremendous amount of experience with audio equipment, and is, at least in my experience, extremely responsive when I have questions. He has an outstanding reputation locally, particularly when it comes to servicing McIntosh tube equipment.
If you’d like a good deal on a Circuit Salad, check out www.echohifi.com
Happy hunting!
D