hilde45,
First of all go to Andy’s website and immerse yourself for an hour or
two. Take note of his test equipment. That’s a collection by itself!
I’ve spoken with him at length about tubes and not only does he have a
grasp on that subject, but he knows circuit design in detail.
I remember when I wanted to tube roll some 5687s in my ModWright
Anniversary PreAmp. He started asking me some questions about the output
circuit design (most of which I couldn’t answer). He then called Dan Wright directly to find out what he needed to know. He
called me back and we had a discussion about the sound characteristics I was
looking for. I was looking for some “vividness” without it being etched. I felt
if the sound was overemphasized in the upper mids/lower treble, I could
compensate downstream. I had the Amperex brand in mind and he completely agreed
with me.
He recommended the Amperex 7119, D
Getter, Pinched Waist (Late 1950s). They weren’t cheap but when I popped them
in place, the sound absolutely glowed. No hiss, no hum, no microphonics, no
unwanted sound at all. I’ve had them in place for a few years now with NO
problems.
This man has seen it all when
it comes to tubes. And he is willing to go the
extra mile to make sure the tube is compatible (and optimal) with the circuit
it is in.
I also bought two Amperex
6922, 1965 “USN”, White Label, Gold Pins for my ModWright modded Pioneer CD
player.
These two components along
the MOSFET powered Modwright KWA 100SE are a match made in Heaven!
If you speak directly
with Andy Bouwman, you will realize the
level of his expertise. He’s my tube guy for life!
