Enclosure not stated · 6 knobs

Archibald

Based on the BK Butler Tube Driver· 1 other board clones it

Schematic

The schematic is in the vendor's build document, page 14. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type
Resistors 22
R1	1M	1M
R2	10k	10k
R3	1M	1M
R4	1k5	1.5k
R5	10k	10k
R6	10k	10k
R7	10k	10k
R8	47k	47k
R9	10k	10k
R10	22k	22k
R11	47k	47k
R12	47k	47k
R13	22k	22k
R14	220k	220k
R15	2k2	2.2k
R16	2k2	2.2k
R17	1M	1M
R18	10k	10k
R19	10k	10k
R20	470R	470
R21	1k	1k
R22	240R	240
Capacitors 26
C1	33n	33n
C2	47pF	47p
C3	1uF	1u
C4	120pF	120p
C5	10n	10n
C6	47n	47n
C7	22uF	22u
C8	100n	100n
C9	330pF	330p
C10	100n	100n
C11	47n	47n
C12	47n	47n
C13	47n	47n
C14	100n	100n
C15	1uF	1u
C16	470uF	470u
C17	100n	100n
C18	100n	100n
C19	47uF	47u
C20	220uF	220u
C21	220uF	220u
C22	100n	100n
C23	100n	100n
C24	470uF	470u
C25	470uF	470u
C26	220uF	220u
Diodes 3
D1	1n914	1N914
D2	1n914	1N914
D3	15v Zener	15V ZENER
Transistors 2
Q1	J201	J201
Q1B	spot).	SPOT).
ICs 2
IC1	TL072	TL072
IC2	LT1054	LT1054
Inductors 1
L1	1mH	1mH
Potentiometers 6
BIAS	10KB	B10k	Potentiometer
EQ	10KB	B10k	Potentiometer
LEVEL	100KA	A100k	Potentiometer
LO	100KA	A100k	Potentiometer
DRIVE	500KA	A500k	Potentiometer
HI	500KA	A500k	Potentiometer
Jacks & sockets 1
J201	in	IN