I am looking for the same info as Rx8man. The TKD attenuator would be the one that is a stereo control and is called the "plastic" one that sells for about $70.00 as the more expensive "stepped" attenuator that sells for about $250 is too big for the SA-5000. According to Mike Elliot at Alta Vista, the $70 TKD is much better then the stock SA-5000 attenuator which he claims was a $7.00 part. Does anyone have expereince with replacing attenuators and can make a recommendation as to a brand and model?