Keeley Baked Mod
Detta är Robert Keeley's modifiering av TS-9. Anledningen att jag köpte den var att jag ville ha lite mer drive än de vanliga modsen. Det fanns "more than plenty". Jag har aldrig behövt vrida upp fullt, utan jag tycker pedalen låter bäst på låg-medel drive.
Såhär skriver Keeley:
This is for the guy that wants THREE times Saturation with all the TONE!
How
is that possible?! I still use the TI RC4558P in this unit. It delivers
the best performance overall. I use a very high quality socket with
gold inserts. The connection between IC and socket can hardly be
better. The drive circuit is further pushed by lowering the resistance
another notch.
The response is the same but drive is 3XXX!!!
All metal film resistors and metal film capacitors are used in the mod
because they have less noise. I raise one of the resistors that affect
the input impedance a slight bit (510k to 620k). This allows your
pickups to breathe and you have less "tone-drain" when off. I also
change the input transistor to a MPSA18 for lower noise operation. This
pedal has the Drive Control range shifted...in comparison to a stock
TS9, the drive knob goes from 4 to 14 instead of 0-10. This pedal is
design to be used in a dual over drive setup. (I like for people to
have at least one pedal that will do a clean-ish sound, this one won't)
Also in this mod is the asymmetrical clipping mod (2nd Order Harmonic
Distortion), which creates all of the warmth of a tube amp!