"mat_432"


what i d'like to do is to make the sound more "transparent" or clear
(for the summing part). so by looking around, i can read that changing
the opamps could be a start.
it's equiped with tl072 originaly, and i would like to give it a try
with 5532's or 2134..
what do you think about it?

** Nuts.

would i expect real improvement from this?

** Nope.

The summing stages involve transistors at the inputs to the TL072s - so are
very quiet.

The op-amps you mention take much higher DC supply current so would
overload the PSU if you changed them all.

Their higher bandwidths could easily lead to HF oscillation problems to.

The scorched resistors seem to be in the headphone amplifier ( cos some dope
used a mono plug) and simply need replacing.


..... Phil