RUNOFFGROOVE: Nurse Quacky (EHX Dr Q)

This one seems to have many parents - I was not really sure what to tag it as.  It started life as an Electro-Harmonix Dr Q, which ended up as a Jack Orman Dr Quack and then at some stage Mark Hammer mods have appeared, and more changes bought it to Nurse Quacky by Runoffgroove.   Hopefully I have all that in the right order.

RUNOFFGROOVE NURSE QUACKY / MODDED EHX DR Q - VERO LAYOUT

RUNOFFGROOVE: Supreaux Deux

The follow-up on the Runoffgroove Supreaux, the Supreaux Deux.   An improved version of the original Supreaux design, running at 18v and with some changes to match the sound of the original amp as closely as possible.

Please follow the link to the runoff groove site, as there's an amazing amount of info on the development of this circuit available.  I swapped the 100k input resistor out for a capacitor; you can easily change this back to the original if that's what you prefer.

RUNOFFGROOVE SUPREAUX DEUX - VERO LAYOUT

RUNOFFGROOVE: Supreaux

This is the Runoff Groove Supreaux, their first interpretation of a Supro 16T amp.  

It's also known as the JHS Superbolt - which is almost identical to the Supreaux, but runs at 18v with a gain switch added.   Just put the schematics side by side, and you will see what I mean.  

I added the 22n input cap, which is missing from the original (it appears on the JHS version).  Swap it for a 100k resistor if you prefer the original - or you could do both.

Like anything using J201s - make sure you buy real ones or prepare for disappointment.  Bias drains to half voltage as a starting point and then tune by ear.

RUNOFFGROOVE SUPREAUX  - VERO LAYOUT