I love rangemasters
But I am not really into this whole positive ground power supply fuckery
So I love this one thousandfold.
Basically you can use this PCB to build a clone of the Catalinbread Naga Viper
But I added a switch so you can choose if you want a germanium or silicon transistor in the circuit.
With the Range and Gain pots up this can get inte reeeeeally nice low gain drive territorys.
Especially on the germanium setting
Damn you really should try this one
You can also get this as a kit from Musiking here