Any Quasar diode mods to reduce or soften the distortion & harmonics?

[Mad Dave]

I like this pedal, but it can be a little gritty, esp on low notes. And if you add even a 7th to a voicing, trashy, low frequency harmonics appear.  Wondering whether anyone's had any experience reducing some of these qualities w/ different devices (diodes, FETs, etc) in the FB loop.  TIA.

[ch1naski]

I like this pedal, but it can be a little gritty, esp on low notes. And if you add even a 7th to a voicing, trashy, low frequency harmonics appear.  Wondering whether anyone's had any experience reducing some of these qualities w/ different devices (diodes, FETs, etc) in the FB loop.  TIA.

I'm not a fan of the overdrive sounds that it gets, I only use it as a tone-shaping preamp.
But, yea, even then, it's slightly heavy on the bass frequencies.I find myself turning the bass knob down pretty far.

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