Clean Boost to Heavy Over-Drive
Features:
- 4 channels with separate voicing and gain structure
- Analog design
- 10 dB clear boost
- True bypass switching
- Very low power consumption (~3mA)
- No tone change, only enhances sound
- Uses standard Boss 9v DC, negative-center power supply…
Clean Boost to Heavy Over-Drive
Features:
- 4 channels with separate voicing and gain structure
- Analog design
- 10 dB clear boost
- True bypass switching
- Very low power consumption (~3mA)
- No tone change, only enhances sound
- Uses standard Boss 9v DC, negative-center power supply
- Low noise
BOM:
Component Count: 36
Ref Value Part Description
C1: 100n Unpolarized capacitor
C2: 100n Unpolarized capacitor
C3: 22n Unpolarized capacitor
C4: 22n Unpolarized capacitor
C5: 22n Unpolarized capacitor
C6: 22n Unpolarized capacitor
C7: 100n Unpolarized capacitor
C8: 220u Capacitor_TTH Polarized capacitor
C9: 220u Capacitor_SMD Polarized capacitor
D1: 1N5817 Diode_TTH 20V 1A Schottky Diode, DO-41
D2: LED 5.0mm Light emitting diode
J1: Power Connector: 01x02
J2: Input_Output Connector: 01x04
J3: Output Select Connector: 01x03
J4: Source Switch Connector: 01x02
J5: Stomp Switch Connector
Q1: BF862 N-Ch JFET_TTH - or - Q10 BF862 N-Ch JFET_SMD
Q2: BF862 N-Ch JFET_TTH - or - Q20 BF862 N-Ch JFET_SMD
(Q1 & Q2 can be substituted with J201, 2N5457 and\or 2SK170)
R1: 1M Resistor_TTH
R2: 10k Resistor_TTH
R3: 1M Resistor_TTH
R4: 2k7 Resistor_TTH
R5: 10k Resistor_TTH
R6: 470k Resistor_TTH
R7: 220k Resistor_TTH
R8: 1M Resistor_TTH
R9: 1k Resistor_TTH
R10: 10k Resistor_TTH
R11: 1M Resistor_TTH
R12: 1M Resistor_TTH
R13: 470 Resistor_TTH
VR1: A250k Potentiometer 9mm Rt Angle PC mount
(Volume control)
VR2: 10k Trimmer Potentiometer_THT (Cermet 3362P)
(VR2 is the Q2 bias adjust)
VR3: 20k TrimmerPotentiometer_THT (Cermet 3362P)
(VR3 is the LED brightness control)
