Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 05:20:11 am | ||
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8 Replies
4696 Views |
by Voxbox |
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Marshall Origin mod troubleshooting
Started by Ledvedder |
6 Replies
4346 Views |
by Ledvedder |
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High VAC on B+
Started by CrocMule |
16 Replies
4760 Views |
by HotBluePlates |
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Mod filters
Started by dude |
4 Replies
3553 Views |
by HotBluePlates |
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4 Replies
2685 Views |
by swingarm |
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Harvard Amp Mod
Started by TurboGuitarMelton |
14 Replies
5422 Views |
by CascoSieg |
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6 Replies
3786 Views |
by punkykatt |
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8 Replies
4125 Views |
by tubeswell |
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12 Replies
4441 Views |
by fazeka |
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5f6a bias tap glow
Started by tommyzcat |
10 Replies
3201 Views |
by tommyzcat |
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11 Replies
3672 Views |
by sluckey |
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mosfet trem blowing PS resistors...
Started by CascoSieg |
13 Replies
4151 Views |
by CascoSieg |
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EL34 suppressor grid
Started by SoundCity85 |
5 Replies
2900 Views |
by SoundCity85 |
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40 V AC in the green terminals of 6,3V
Started by rafaelctt |
32 Replies
7300 Views |
by sluckey |
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290AX wiring with a Champ 600 reissue
Started by JPK |
4 Replies
2757 Views |
by JPK |
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8 Replies
3285 Views |
by kagliostro |
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Revisit- Fender Super Twin- New Project
Started by pbman1953 |
14 Replies
4109 Views |
by pbman1953 |
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3 Replies
2505 Views |
by BrainDeadAmps |
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23 Replies
5369 Views |
by Platefire |
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5 Replies
2808 Views |
by fdesalvo |
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14 Replies
4749 Views |
by kagliostro |
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AB764 Vibrochamp build questions
Started by J3ona1 |
2 Replies
2405 Views |
by J3ona1 |
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Another PR build post with questions…
Started by Jalmeida |
1 Replies
1949 Views |
by sluckey |
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Need help with something wierd
Started by RoninAudio |
6 Replies
2893 Views |
by RoninAudio |
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6 Replies
3457 Views |
by JPK |
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New 5E3 build bias check - am I ok?
Started by JPK |
10 Replies
3928 Views |
by Voxbox |
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Changing this schematic presence control
Started by dude |
8 Replies
3918 Views |
by dude |
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Output transformer ringing
Started by Esquirefreak |
0 Replies
2195 Views |
by Esquirefreak |
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Amp Projects
Started by Lectroid |
19 Replies
5941 Views |
by PRR |
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11 Replies
3940 Views |
by kagliostro |
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Cathode biased Blues Junior new project
Started by acheld |
13 Replies
5205 Views |
by pdf64 |
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19 Replies
5832 Views |
by bmccowan |
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Passive Effects Loop Implementation
Started by McAbe |
9 Replies
5179 Views |
by pdf64 |
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3 Replies
2458 Views |
by kagliostro |
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Power transformer wiring question
Started by Erik Aa |
23 Replies
6393 Views |
by Erik Aa |
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59 Replies
70054 Views |
by shooter |
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The danger of vacuum tubes
Started by isaac_teller |
5 Replies
3169 Views |
by mresistor |
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Switch between 2 different output valves
Started by Paulycoo |
16 Replies
4419 Views |
by kagliostro |
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7 Replies
2774 Views |
by fdesalvo |
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parallel input jack wiring
Started by BrainDeadAmps |
2 Replies
2300 Views |
by BrainDeadAmps |
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16 Replies
4436 Views |
by BetterOffShred |
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AC10 Intensity in AC4? <<Solved>>
Started by dwinstonwood |
14 Replies
4761 Views |
by dwinstonwood |
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29 Replies
6504 Views |
by JPK |
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Howling Feedback in Reveb Recovery
Started by jewishjay |
5 Replies
2956 Views |
by GroundhogKen |
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12 Replies
4172 Views |
by Williamblake |
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15 Replies
12025 Views |
by kagliostro |
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Vox AC4 question. Need explanations.
Started by johngovan |
9 Replies
3802 Views |
by kagliostro |
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10 Replies
4173 Views |
by fkitch |
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7 Replies
3460 Views |
by PRR |
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2 Replies
2505 Views |
by acheld |
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