4 Horsemen

effect pedal project by Apocalypse Audio

Here's the 4 Horsemen effect pedal project from Apocalypse Audio.

This project has been described using terms like apocalypse audio, fuzz, overdrive, and stripboard.

Beyond the specs and details found on this page, you'll want to check out these stripboard resources too.

Project Resources

Parts List

  • C1
    100u
  • C2
    100n
  • C3
    47u
  • C4
    470p
  • C5
    100u
  • C6
    10u
  • C7
    1n
  • C8
    1u
  • C9
    47n
  • C10
    560p
  • C11
    2n2
  • C12
    1n
  • C13
    560p
  • C14
    4u7
  • C15
    220n
  • C16
    470p
  • C17
    220n
  • C18
    47n
  • D1
    1N4001
  • D2
    12V ZENER
  • P1
    500k Gain
  • P2
    50k Tone
  • P3
    100k Volume
  • R1
    500R
  • R2
    100k
  • R3
    1M
  • R4
    100R
  • R5
    100R
  • R6
    3M3
  • R7
    10k
  • R8
    3M3
  • R9
    10k
  • R10
    100k
  • R11
    3k9
  • R12
    4k7
  • R13
    47k
  • R14
    150k
  • R15
    39k
  • R16
    8k2
  • R17
    470k
  • R18
    500R
  • R19
    500R
  • R20
    39k
  • R21
    470k
  • T1
    2N5457
  • T2
    2N3391
  • T3
    BS170
  • T4
    2N1307
  • U1
    9V

Similar transistors & Potential Alternatives

Can't find an exact match for the recommended transistors in this project within your stash? Or maybe you just feel like experimenting. Use these tables below to get started finding a suitable or otherwise interesting transistor substitution.

There may be 2 alternatives for the 2N5457 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's FETType, CntlChType, Vgs, Vds, and Id values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

2N5457
more info
CntlChType
N
channel
FETType
JFET
Id
0.005
A
Pd
0.625
W
Tj
150
°C
Vds
25
V
Vgs
2.5
V
2N5953
more info
CntlChType
N
channel
FETType
JFET
Id
0.005
A
Pd
0.36
W
Tj
150
°C
Vds
30
V
Vgs
2.5
V

There may be 24 alternatives for the 2N3391 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

2N3391
more info
Cc
12
pF
ft
70
MHz
hFE
250
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
2N3391A
more info
Cc
12
pF
ft
70
MHz
hFE
250
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
2N5420
more info
Cc
6
pF
ft
100
MHz
hFE
250
β
Ic
0.5
A
Pc
0.4
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
4
V
2SC1361
more info
Cc
9
pF
ft
70
MHz
hFE
250
β
Ic
0.2
A
Pc
0.25
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
6
V
2SC1363
more info
Cc
9
pF
ft
70
MHz
hFE
250
β
Ic
0.2
A
Pc
0.25
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
6
V
BC172B
more info
Cc
6
pF
ft
100
MHz
hFE
240
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
BC173B
more info
Cc
6
pF
ft
150
MHz
hFE
240
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
BC278B
more info
Cc
7
pF
ft
75
MHz
hFE
240
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
6
V
CI3391
more info
Cc
10
pF
hFE
250
β
Ic
0.1
A
Pc
0.25
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
CI3391A
more info
Cc
10
pF
hFE
250
β
Ic
0.1
A
Pc
0.25
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
CI3392A
more info
Cc
10
pF
hFE
250
β
Ic
0.1
A
Pc
0.25
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
D26C4
more info
Cc
8
pF
ft
200
MHz
hFE
250
β
Ic
0.2
A
Pc
0.09
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
GES3391
more info
Cc
10
pF
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
GES3391A
more info
Cc
10
pF
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
MPS3391
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
MPS3391A
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
NPS3391
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
NPS3391A
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
PN3391
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
PN3391A
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
TN3391
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
TN3391A
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
TP3391
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V
TP3391A
more info
Cc
10
pF
ft
60
MHz
hFE
250
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
25
V
Vce
25
V
Veb
5
V

There may be 21 alternatives for the BS170 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's FETType, CntlChType, Vgs, Vgs(th), Vds, and Id values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

BS170
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
2SK3124
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
10
W
Rds
230
Ω
Tj
150
°C
Vds
400
V
Vgs
20
V
Vgs(th)
3
V
Cd
10
pF
tr
35
ns
AP01N40J
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
17.4
W
Rds
160
Ω
Tj
150
°C
Vds
400
V
Vgs
20
V
Vgs(th)
3
V
Cd
11
pF
tr
12
ns
BS170D26Z
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
17
pF
BS170D27Z
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
17
pF
BS170D74Z
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
17
pF
BS170D75Z
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
17
pF
BS170G
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170L34Z
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.83
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
17
pF
BS170RL1G
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170RLRA
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170RLRAG
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170RLRMG
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170RLRP
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170RLRPG
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
BS170ZL1G
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.35
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
CHT170GP
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.3
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
Cd
11
pF
CS7000
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.4
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
MMBF170
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.3
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
NVBF170L
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
0.225
W
Rds
50
Ω
Tj
150
°C
Vds
60
V
Vgs
20
V
Vgs(th)
3
V
RDR005N25
more info
CntlChType
N
channel
FETType
MOSFET
Id
0.5
A
Pd
1
W
Rds
8.8
Ω
Tj
150
°C
Vds
250
V
Vgs
20
V
Vgs(th)
3
V
Cd
10
pF
tr
10
ns
Qg
3.5
Nc

There may be 2 alternatives for the 2N1307 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

2N1307
more info
Cc
20
pF
ft
8
MHz
hFE
60
β
Ic
0.3
A
Pc
0.15
W
Pol
PNP
Tj
85
°C
TranMat
Ge
Vcb
30
V
Vce
15
V
Veb
25
V
BSY59
more info
Cc
18
pF
ft
60
MHz
hFE
60
β
Ic
0.8
A
Pc
0.28
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
15
V
Veb
5
V