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Zzoyds Black Velvet Fuzz
Zzoyds modified Dirty Boots by Apocalypse Audio. An extra germanium pre amp stage has been added to convert it from an overdrive into a fuzz. MP38’s is fairly low gain NPN Ge so it can be subbed with 2N1302/2N1304, OC140, 104NU71 etc.
VFE Choral Reef Analog Chorus
Great sounding chorus which is based on EHX Small Clone but with much more tweakability. Note that the swithing board is not included for this layout so the voltage reference components (8,2k, 10k and 47uF) istaken from the switching board into this layout. Schematic and info HERE
Electro Harmonix Small Stone V1
Layout for the first version of Small Stone which was produced between 1974(?) and 1978. Layout is based on schematic from Lectric Fx Note that original had long gone obsolete 8 pin OTA chips so this layout is modernized for easy to get LM13700s.
Jen KPS-900 Phase Shifter
Similar to MXR 45 phaser but the pesky J FETs is replaced by a CD4007 chip so no transistor matching is required. Schematic avaiable HERE
Maestro RM-1A Ring Modulator
A requested circuit but bear in mind that it is rather big, has an onboard charge pump for 15v-15v operation, and has a quite complicated setup due to five multiturn trimmers. I’ve omitted the (for now) the Osc, Pitch, Carrier and Modulation jacks but might add it later on if is requested but it will … Read more