EBP Booster

EBP BOOSTER 

Q3 is J-FET 2N5457
Q4 is Japanese NPN C1815.
K2 is DIP-2 Switch to select the right tone

SD Pickup Booster

SD PICKUP BOOSTER

Q1 & Q2 are NPN
Q3 is PNP

This booster work very nice with OCD.
It pushed my OCD into near metal dsitortion zone, very meaty.

D'Queen Treble Booster - Pending Verification

D'Queen Treble Booster.
Size of Board: 37mm Width x 3mm Height (1590B Box okay!)
B2K can be omitted if the gain control is not needed. Use 2k4 ohm in this case.
If B2K is used, use a smaller resistor here. 470R is a starting point.

6k8 to 10k resisstor can be used in the the third resistor from right in bottom row.

Use 2k2 resistor in the last resistor from right in bottom row if the Super Bright Resistor is used.

ARC Booster - Build Verified

Size of Board: 52mm WIDE x 41mm HEIGHT (1590B Box Ok!)
The slashed part are changes needed to build RC.

For AC, use 2 diodes in RV and 1 in FW clipper group.
For RC, use 3 diodes in both RV and FW clipper group.

Transistor in the original unit is 2SC1815 (view from top, left to right = ECB)