wrote in message
ups.com...
Hi

Does anyone know where I can source a good quality rotary switch (2
pole and 20 ways) to make a stepped attenuator??


I've got a home made amp and I'm currently using a conductive plastic
pot but I'd like to hear the difference in going to a stepped
attenuator.


The DACT stepped attenuator is good value for money.
They also make multiway switches if you really want to
try a homebrew..

Also Grayhill UK will supply switches to any format.
If you want a really high-grade stepped attenuator try TKD.
Not much change from UKP350 bought retail.

I am currently working on a valve power amp, with a
pair of TKD stepped attenuators (40 way) on the inputs.
A pal of mine here has fitted stepped motors to them
with a remote which works beautifully.

The main advantage of a stepped attenuator is the tracking
accuracy. You will certainly hear a difference. There are
people who will tell you a resistor is a resistor is a resistor.
They also think a saxophone is a saxophone is a saxophone.
Listen, compare, and make up your own mind.

Good luck
Iain