PROJECT: Overdrive pedal based on SansAmp GT2 & Marshall Guv'Nor

Overview

This effect was based on a couple of wonderful guitar devices: SansAmp GT2 (by Tech21) & Guv'Nor (by Marshall). The Overdrive section were taken from SansAmp and Tone-control (EQ) section were taken from Guv'Nor. Following features were added: hi-impedance (1 MOhms) INput to decrease pickup's signal degradation and bufferred low-impedance OUTput to match for any next circuits (long cables, low-impedance mixer's INput and so on). Scheme is deprived next flaws of SansAmp: pops on switching on/off of the effect, strong noise in pauses, no "mid" control EQ.

Wiring diagram see here:

There're some photos of my version of SansMarshall:

Marshall's tone control soldered directly on the pots!

Sound examples

Recorded in "line-in" directly with no any sound processing (except normalization).
Following gear was used for recording:

Electric guitar Ibanez RG3120TW (pickups: neck - DiMarzio PAF Pro, bridge - DiMarzio ToneZone);
Cables: hand-made, Tasker C285 1x0.50 Professional Noiseless Guitar Cable (2 m);
Subject: SansMarshall;
Sound card: M-Audio Delta-44 (mode: 24 bit, 44.1 kHz);
Sound control: Head-phones NADY QH560 (no good quality part);
Software: SoundForge v8.0 (normalization, cutting, bit-depth reducing);
Samples preparing: Lame v3.93 (MP3 encoding, 112kbps, mono);

Bypass mode (check out guitar voicing):

"Crunch" (overdrive):

"Rythm" (mid gain, BASS and Low-MID is up):

"Lead" (hi gain, for soloing):

Tone-control possibilities:

Picking reproducing, nuances:

Warning #1: it has been played "as I can", only for sound test - don't throw a tomatoes to me :)
Warning #2: most examples has been recorded with "muddy" pickup DiMarzio ToneZone.

PROJECT: Overdrive pedal based on SansAmp GT2 & Marshall Guv'Nor

Overview

Sound examples

Related links: