audiozaz
rtfm!? - tl;dr
Well, got my other CDB500 today and quickly did the muting transisters surgery (I just heated the collector joints and rolled them back. 7684 near the dog leg corner, 7685 near the second pic corner.
Both Maggies sound wonderful, but I wouldn't be typical unless I said the bass of the moded unit did project a more real picture. Gary Jess's 'Lady of the Lake' relies much on the 'bass' riverboat horn.
Cool.
If you have some 10µF or more film capacitors, you could replace the two 10µF electrolytics at the output as well, very quick and easy to do.
Another mod that could be done on this unit is to fill the empty spaces in the chassis with blocks of dense open-cell foam. While I find my CDB-502 to be quiet enough, my Philips CD921 had even more empty space inside and I could hear the spindle noise resonate in there, about as loud as an amplifier fan! The foam block helped a lot to quiet things down. I guess it depends on if you can hear that noise and if it bothers you.
az