Welcome To the Hoffman Amplifiers Forum
March 11, 2026, 07:00:26 am
Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 07:00:26 am | ||
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Circuit Analysis
Started by Nathan |
5 Replies
3494 Views |
March 20, 2024, 07:41:13 amby Nathan |
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Pull down resistor question
Started by g-man |
4 Replies
2897 Views |
March 19, 2024, 11:18:15 pm by stratomaster |
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What parts determine tone?
Started by pbman1953 |
38 Replies
10293 Views |
March 19, 2024, 06:38:13 pm by pbman1953 |
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3 Replies
3425 Views |
March 19, 2024, 03:48:37 pm by stratomaster |
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Risson Marvel 12E bias setting cold
Started by Pavedog |
42 Replies
11473 Views |
March 19, 2024, 01:00:48 pm by johnnyreece |
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Matamp GT120 clone build
Started by hiegdk |
5 Replies
6077 Views |
March 19, 2024, 09:00:21 am by MadAsAHatter |
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Add Vu meter to pre-amp
Started by BrainDeadAmps |
0 Replies
2089 Views |
March 19, 2024, 01:15:41 am by BrainDeadAmps |
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29 Replies
11973 Views |
March 18, 2024, 07:06:29 pm by wsscott |
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MOVED: ADA MP1 schematic question
Started by sluckey |
0 Replies
2051 Views |
March 18, 2024, 03:22:34 pm by sluckey |
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Hoffman Princeton build in a PRRI Chassis
Started by Jrusto |
5 Replies
2934 Views |
March 18, 2024, 11:59:17 am by sluckey |
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5 Replies
2946 Views |
March 18, 2024, 11:58:10 am by Miyagi_83 |
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6 Replies
3130 Views |
March 17, 2024, 07:25:31 pm by HotBluePlates |
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26 Replies
8788 Views |
March 16, 2024, 11:22:29 pm by murrayatuptown |
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Another Mystery Transformer Query, sorry...
Started by tdvt |
6 Replies
3094 Views |
March 16, 2024, 09:03:48 pm by tdvt |
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Step down PT test
Started by AlNewman |
18 Replies
5909 Views |
March 16, 2024, 06:13:56 pm by AlNewman |
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5 Replies
3837 Views |
March 15, 2024, 12:11:34 am by passaloutre |
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6 Replies
3092 Views |
March 14, 2024, 07:29:24 pm by Lambertini |
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0 Replies
2487 Views |
March 14, 2024, 05:22:34 pm by spunko |
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7 Replies
3511 Views |
March 14, 2024, 09:44:52 am by daveneary |
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Ampro PA-3 head
Started by CrocMule |
16 Replies
5433 Views |
March 13, 2024, 10:08:08 pm by PRR |
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27 Replies
6570 Views |
March 13, 2024, 08:48:24 am by tdvt |
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31 Replies
8649 Views |
March 13, 2024, 12:28:55 am by tinkering |
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5 Replies
2881 Views |
March 12, 2024, 05:49:12 pm by PRR |
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0 Replies
1907 Views |
March 12, 2024, 05:04:28 pm by kagliostro |
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18 Replies
4582 Views |
March 12, 2024, 08:49:58 am by passaloutre |
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6 Replies
3589 Views |
March 12, 2024, 12:07:33 am by spunko |
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5 Replies
3134 Views |
March 11, 2024, 09:05:15 pm by AlNewman |
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6G15 + Tremodrive
Started by J3ona1 |
2 Replies
2151 Views |
March 11, 2024, 02:41:09 pm by J3ona1 |
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Trem-O-Nator Vactrol?
Started by tdvt |
3 Replies
2374 Views |
March 11, 2024, 12:56:02 pm by sluckey |
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Suitable Shoulder Washer & Flat Washer
Started by Pollys13a |
10 Replies
4243 Views |
March 11, 2024, 08:21:25 am by EL34 |
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New amp D-763
Started by tubenit |
9 Replies
3778 Views |
March 10, 2024, 04:10:06 pm by Platefire |
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16 Replies
4839 Views |
March 10, 2024, 01:32:02 pm by Pollys13a |
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Sluckey’s M-2 Magnatone
Started by Jhj |
13 Replies
4431 Views |
March 09, 2024, 10:03:04 pm by Jhj |
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Odd question about heater wires...
Started by AmberB |
3 Replies
2484 Views |
March 09, 2024, 09:05:39 pm by glass54 |
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18 Replies
5379 Views |
March 09, 2024, 09:57:32 am by acheld |
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10 Replies
5262 Views |
March 08, 2024, 03:50:43 pm by GuitarPilot65 |
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Issue on one channel, global effect?
Started by tdvt |
2 Replies
2217 Views |
March 08, 2024, 08:52:43 am by tdvt |
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8 Replies
3548 Views |
March 07, 2024, 10:15:44 pm by sluckey |
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I got the "bug" again.....
Started by Jonas |
8 Replies
3843 Views |
March 07, 2024, 05:20:53 pm by Jonas |
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What is preamp tube transconductance?
Started by Jonas |
6 Replies
3536 Views |
March 07, 2024, 05:01:52 pm by Jonas |
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5f10 shared plate resistors
Started by TurboGuitarMelton |
4 Replies
2690 Views |
March 07, 2024, 10:19:02 am by 66Strat |
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Voltage doubling rectifier
Started by dwinstonwood |
9 Replies
4157 Views |
March 07, 2024, 01:47:14 am by HotBluePlates |
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Blown tube?
Started by dbishopbliss |
4 Replies
2996 Views |
March 06, 2024, 01:17:52 pm by tubeswell |
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Hoffman Princeton build in a PRRI Chassis
Started by Jrusto |
14 Replies
5285 Views |
March 06, 2024, 10:14:11 am by sluckey |
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Princtone Reverb No Tremolo with EL84's
Started by Smradek |
3 Replies
2740 Views |
March 06, 2024, 09:48:49 am by tdvt |
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Vox AC4 switch question
Started by Kesi from Hungary |
6 Replies
3125 Views |
March 05, 2024, 11:18:08 pm by Kesi from Hungary |
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High pitched noise 15 watt tube amp Monoprice
Started by sausetron@yahoo.com |
2 Replies
3067 Views |
March 05, 2024, 08:52:57 pm by sausetron@yahoo.com |
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Fender accessory jack
Started by Diverted |
14 Replies
5135 Views |
March 05, 2024, 06:38:07 pm by sluckey |
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6 Replies
5387 Views |
March 05, 2024, 06:14:23 pm by tinkering |
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5 Replies
3881 Views |
March 05, 2024, 01:13:40 pm by PRR |
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