MOTM

Thanks for the replies. Comments in line.

--Scott Juskiw--
Would it not be easier to just put a switch in series between the 470
ohm resistor and the op amp that drives the circuit (the left most op
amp in your drawing)?

--Scott Evans--
Yes, but the transistor control would allow for one master switch to
turn off many 800's at a time. The transistor could be located on the
leg you mention, as well.

--Moe Bradley--
LEDs are standard on MOTM LFO modules without any havoc being 
created. I say go for it. As always, you need to be sure that you 
don't overtax your power supply - allow 8 to 10 mA extra current draw 
for every added LED.

--Scott Evans--
OK, I'm convinced.

--Moe Bradley--
Whoops, I've confused Scott Evans with Scott Juskiw, hence 
my "building a monster" remark was perhaps misaimed. Although I'm 
sure that you (Scott Evans) will build a monster too if given the 
chance.

--Scott Evans--
Heh, Heh, Heh.