Lectric-fx releases O-zoan V2.0 JFET overdrive with three bias trimmers

November 1, 2022 · 1 sources

Lectric-fx released the O-zoan V2.0 JFET Overdrive on November 1, 2022, a revision of its overdrive circuit that adds three bias trimmers.

The maker describes the circuit as a "JFET OD based on the BFX Baby Blue OD™"¹. The new trimmers replace resistors R5, R10 and R13 from the V1.0 project, and the board labels BIAS1, BIAS2 and BIAS3 to correspond directly to Q1, Q2 and Q3¹. Lectric-fx instructs builders to measure the drain of each JFET and set it for 4.5V by adjusting its corresponding trimmer, noting a small silkscreen dot on the drain side of each transistor¹.

The board can be ordered completely blank for builders who supply their own JFETs, or with three surface-mount MMBF4393 pre-soldered, an option the maker calls "one of the best options, IMHO"¹. The maker also states that through-hole 2N5952 parts "are known to sound good in this circuit"¹.

The price range is $8.00 through $13.00¹. A PDF document for the V2.0 board is linked from the product page¹.