Boss Stacked SD-1 with Diode Switch
Description
New as of August 2007--we're introducing a new feature now included in our SD1. We're now stacking two TI4558P chips. These two TI chips work in parallel, mounted on top of each other and soldered together. Many hi-fi stereo enthusiasts enjoy this technique for noise reduction (read The Art of Electronics for some really technical data!) and it’s been done in a couple of other boutique effects too. The same Keeley SD1 tone is still there, now with noticeably BETTER DISTORTION, LESS NOISE, ARTICULATION and TRANSPARENCY! This tone is so good we've decided to stop including the Burr Brown chip. (Don’t feel like you’ve missed out; this new version and technique is truly better sounding in the SD-1.)
Yes found it! Here:
Just thought to give this idea some more circulation, maybe somebody would like to experiment. I had a hard time stacking something on my DS-1 7pin opamp, but will have to try it soon.bajaman
Replies: 13
Views: 406
PostForum: Boutique Stompboxes dissected... Posted: 12 Aug 2007 01:51 am Subject: Way Huge - Green Rhino
Hi Dirk
Op amps are strange things Wink
OPA2134
LM1458
TL072
NE5532
LF442
LM833
JRC4558
LF353N
all sound different in the same circuit - use a socket and try - you WILL hear the difference.
Then try "stacking" them - my personal favourite is an OPA2134/LM1458/LM833 stack.
One disadvantage - they draw more current - so if you are using battery, it will not last as long Wink
Cheers
bajaman
modman
thanks bajaman, for daily inspiration days after even