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Moon LNDer Overdrive
Time to dust off the depletion mode MOSFETs in the bin. Here is a quite interesting design using four of these overlooked transistors. It is basically Plexi voiced a low to medium gain overdrive with a James tonestack. Each MOSFET have a3,3k resistors at its Source and according to the schematic these should be adjusted … Read more
Lell EP Parametric Equalizer
A 3 band parametric eq from the Soviet Union, anyone? Electronic switching is removed and op amp is altered for normal 8 pin DIP package which replaces the odd dual op amp 14 pin DIP package. As for R28 which is connecting across the output of the last op amp and ground, the schematic simply … Read more
Electro Harmonix Frequency Analyzer – Modern version
The modern version of EHX Frequency Analyzer. The ICL8083 IC is obsolete but there is still some vendors that have it in stock. Came out taller than expected since I wanted the bipolar voltage doubler circuit on the same board as the main circuit. But it will fit sideways in a BB enclosure… Schematic is … Read more
XTS Atomic Overdrive
An interesting high gain overdrive three cascaded mu amp stages with a poweful and flexible eq section Schematic is avaiable HERE. Came out a bit big with eight transistors and an IC so mounted sideways in a BB enclosure might be the best option when housing it…
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.
