Crack

A forum for discussion of the Crack OTL headphone amp kit
F
Which speakers can the Crack drive?
2
Replies
22
Views
11K
free
F
D
Please help! High Voltage on 1,A8, A6, and B1 and A8 led not working
Replies
7
Views
4K
davidvanderbilt
D
MisterM
Solen cap lead length
Replies
1
Views
2K
Grainger49
G
M
Crack with Speedball Troubleshooting
Replies
17
Views
7K
Mstyle
M
M
Resistance check failed at Points 14 and 20 [solved]
Replies
2
Views
2K
Merlocpm
M
M
hot faceplate and transformer
Replies
2
Views
2K
mithrandir39
M
M
Low hum from my crack
Replies
16
Views
8K
Grainger49
G
H
Assistance with Crack build/resistance checks
Replies
1
Views
3K
Paul Birkeland
Paul Birkeland
R
One bad resistance on my crack [solved]
Replies
9
Views
3K
Paul Birkeland
Paul Birkeland
A
Trouble after speedball upgrade
2
Replies
29
Views
9K
Paul Birkeland
Paul Birkeland
S
Issue with my first plug in
Replies
7
Views
3K
Grainger49
G
Natural Sound
Speedball upgrade = fantastic!
Replies
2
Views
2K
mahdi8
M
J
Help with Speedball
Replies
10
Views
3K
Doc B
Doc B
J
Lower Impedance Headphones
Replies
2
Views
3K
John EH
J
S
Speedball some LEDs not lighting [solved]
Replies
5
Views
3K
Paul Birkeland
Paul Birkeland
T
No sound right channel [solved]
Replies
5
Views
3K
tvrtony
T
J
Speedball 237 ohm resistor
Replies
0
Views
2K
jt
J
J
On / Off Switch
Replies
15
Views
7K
Grainger49
G
A
Tube life
Replies
8
Views
5K
Paully
P
R
Crack output cap as preamp
2
Replies
21
Views
8K
Grainger49
G
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