Schematic is avaiable HERE.
Sunday, 14 February 2021
Saturday, 13 February 2021
Modern SLO 100
Russian pre amp emulator of a Soldano SLO. D1 and D2 is optional since they only add some compression to the overall sound.
Friday, 12 February 2021
Lastgap Art Laboratories Misty Cave
A biggie but it will fit a BB enclosure without battery. If you think this is to big for vero, Deadend Fx have excellent PCBs for this circuit and many other cool designs.
Schematic is avaiable HERE.
Thursday, 11 February 2021
Park Auto Wah
Not an auto wah in a normal sense, more like an inductorless wah circuit driven by an LFO.
This must be one of the earliest modulation pedals and IMO it is a hidden gem. Lots of murky psychedelic madness can be found in this circuit, especially with a dirt box upfront.
Rate and Depth controls is self explanatory but the Tone control really widens the ranges of tones. Clockwise you'll get normal wah wah sweeps, roll it back and you can dial in vowel and yuo-yuo sweeps.
With the Depth control CCW, the LFO is disengaged and the unit acts as a eq / filter circuit.
Layout has some mods; power supply mod since original units was positive ground, CBE pinout for the transistors, power filer cap and protection diiode. As for the transistors, most low gain NPN silicons should work, I ended up with PN2222s in the 150Hfe ballpark.
This is soon to be boxed but need to figure out how to add a rate LED first...
*Edit* Rate LED added with help from Radu. Thanks!
Schematic is avaiable HERE
Wednesday, 10 February 2021
Rochambeau
This was a request.Based on Fuzzrucious Ram the Manparts but with a bit less gain on tap, no starve control but with tone and clipping controls. Schematic and info HERE.
Monday, 8 February 2021
Laney Black Country Customs TI Boost
Schematic is avaiable HERE.
Through hole MC33178 op amps seem to have gone obsolete so you may want to try other low noise dual op op amps with BJT iputs such as 4580, NE5532, L833 etc. Or simply TL072s...
Sunday, 7 February 2021
Screaming Eagle - ENGL e530 Amp Emulator
Another ENGL 530 amp emulator based on a russian schematic but with quite a few extra knobs and switches added by JOK3RX at FSB.
Saturday, 6 February 2021
Friday, 5 February 2021
Thursday, 4 February 2021
Wednesday, 3 February 2021
Tuesday, 2 February 2021
Sunday, 31 January 2021
Saturday, 30 January 2021
Friday, 29 January 2021
Fairfield Circuitry Barbershop Millenium (maybe...)
Per request. Note that the values for the treble cut capacitors is nor confirmed (10nF and 22nF) so it might be worth socketing these values. Also, I replaced the Drain resistors with trimpots for easier biasing for the J FETs.
Thursday, 28 January 2021
Mellowtone Wizard Fountain
An obscure little fuzz circuit from yesteryear with a neat litlle "Twist" control and Nocentellis gain control mod. Schematic is avaiable HERE.






















