Welcome To the Hoffman Amplifiers Forum
July 14, 2026, 09:35:52 am
Welcome To the Hoffman Amplifiers ForumJuly 14, 2026, 09:35:52 am | ||
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thomas organ 6973 tube amplifier
Started by filamenthead |
2 Replies
5521 Views |
October 05, 2023, 10:53:50 amby 66Strat |
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Ab 763 power amp section input.
Started by tedsorvino1 |
4 Replies
4263 Views |
October 05, 2023, 08:58:11 am by tedsorvino1 |
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4 Replies
4437 Views |
October 04, 2023, 07:50:44 pm by sluckey |
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parallel triode question
Started by joesatch |
16 Replies
8508 Views |
October 04, 2023, 03:23:55 pm by kagliostro |
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AB 568 Super reverb....questions
Started by rafe |
5 Replies
4330 Views |
October 04, 2023, 01:24:20 pm by rafe |
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dual lite channel switching
Started by Mattjaco1 |
5 Replies
4827 Views |
October 03, 2023, 03:52:54 pm by sluckey |
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6 Replies
5744 Views |
October 03, 2023, 09:22:50 am by delray |
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Valve PA to guitar amp
Started by peacocksuit |
11 Replies
5823 Views |
October 03, 2023, 09:00:51 am by kagliostro |
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Just a reminder...
Started by tdvt |
3 Replies
3960 Views |
October 02, 2023, 09:22:04 pm by tdvt |
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Mod Electronics
Started by labb |
11 Replies
5785 Views |
October 02, 2023, 09:20:58 pm by tdvt |
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20 Replies
8610 Views |
October 02, 2023, 06:02:38 pm by pdf64 |
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Vox AC30/4 build finished…
Started by Jalmeida |
3 Replies
4131 Views |
October 02, 2023, 05:20:47 pm by Jalmeida |
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109 Replies
31632 Views |
October 02, 2023, 01:35:17 pm by tdvt |
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Raw pot in 5F4 super
Started by Keyboy |
11 Replies
4975 Views |
October 02, 2023, 07:41:21 am by DummyLoad |
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7 Replies
6090 Views |
October 01, 2023, 06:23:18 pm by AlNewman |
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10 Replies
6379 Views |
September 30, 2023, 05:18:10 am by Dave |
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Effects loop for SV20ish amp
Started by audiosalvage |
5 Replies
4912 Views |
September 29, 2023, 08:09:00 pm by audiosalvage |
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Does it exist a class D tube amp ?
Started by kagliostro |
18 Replies
8595 Views |
September 29, 2023, 03:10:41 pm by kagliostro |
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14 Replies
7057 Views |
September 29, 2023, 01:21:33 am by Bieworm |
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53 Replies
17227 Views |
September 29, 2023, 01:13:19 am by DummyLoad |
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How to measure tube cathode current?
Started by pbman1953 |
12 Replies
10657 Views |
September 28, 2023, 11:31:34 pm by zozoe |
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7 Replies
5419 Views |
September 28, 2023, 03:56:38 pm by HotBluePlates |
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Audio Transformer reference
Started by acheld |
29 Replies
9909 Views |
September 28, 2023, 03:42:34 pm by HotBluePlates |
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Hammond AO-35 conversion
Started by joesatch |
7 Replies
6251 Views |
September 28, 2023, 11:09:59 am by bmccowan |
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5E3 uneven frequency response
Started by Arry |
17 Replies
7843 Views |
September 28, 2023, 05:03:03 am by HotBluePlates |
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Gibson GA-20 RVT T-Filter Question
Started by Deric |
2 Replies
3881 Views |
September 27, 2023, 09:40:26 pm by Deric |
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Help biasing an amp, PP EL34
Started by starseeds |
30 Replies
11958 Views |
September 27, 2023, 07:32:58 pm by AlNewman |
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Unusual capacitor values
Started by jada3909 |
3 Replies
3608 Views |
September 27, 2023, 06:21:31 pm by acheld |
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Princeton Reverb Transformer questions
Started by J3ona1 |
12 Replies
6454 Views |
September 27, 2023, 08:50:27 am by Willabe |
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15 Replies
5955 Views |
September 26, 2023, 10:39:12 pm by SoundmasterG |
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Heater Center Tap Question
Started by imgumby001 |
11 Replies
5403 Views |
September 26, 2023, 05:15:08 pm by passaloutre |
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7 Replies
6075 Views |
September 26, 2023, 05:18:22 am by HotBluePlates |
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Getting old and how to deal it!
Started by Planobilly |
24 Replies
8572 Views |
September 25, 2023, 08:51:57 pm by Guy77 |
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Bias settings for common power tubes
Started by TIMBO |
11 Replies
5734 Views |
September 25, 2023, 12:21:55 pm by tubeswell |
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potentiometers that stay at noon?
Started by fossilshark |
1 Replies
3501 Views |
September 25, 2023, 09:24:13 am by sluckey |
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RCA 307 conversion
Started by AlNewman |
28 Replies
10269 Views |
September 25, 2023, 01:49:45 am by AlNewman |
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transformer identification help
Started by joesatch |
6 Replies
5315 Views |
September 24, 2023, 12:41:41 pm by HotBluePlates |
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NOS/Vintage tubes worth it??
Started by Jalmeida |
18 Replies
7765 Views |
September 24, 2023, 12:30:29 pm by HotBluePlates |
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1 Replies
4563 Views |
September 24, 2023, 11:03:40 am by HotBluePlates |
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6ak5 in place of EF86
Started by imgumby001 |
4 Replies
4864 Views |
September 24, 2023, 08:50:18 am by imgumby001 |
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OPT defective ?
Started by Colas LeGrippa |
9 Replies
5917 Views |
September 23, 2023, 01:57:32 pm by Platefire |
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Vox with Fender channels?
Started by roseblood11 |
3 Replies
5146 Views |
September 23, 2023, 07:17:07 am by dwinstonwood |
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Univox U102 Combo Cabinet Dimensions
Started by astronomicum |
5 Replies
4832 Views |
September 22, 2023, 09:28:11 pm by bmccowan |
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Bassman 50 grounding
Started by labb |
3 Replies
4157 Views |
September 22, 2023, 12:50:06 pm by PRR |
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Fender Bassman 50
Started by labb |
30 Replies
11951 Views |
September 21, 2023, 05:02:28 pm by shooter |
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5 Replies
4651 Views |
September 21, 2023, 01:29:22 pm by Williamblake |
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24 Replies
11693 Views |
September 21, 2023, 12:58:16 pm by stratomaster |
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51 Replies
19205 Views |
September 21, 2023, 05:41:33 am by Dave |
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9 Replies
6080 Views |
September 21, 2023, 12:47:15 am by kagliostro |
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Effects loop build question
Started by audiosalvage |
1 Replies
4106 Views |
September 20, 2023, 09:49:33 pm by PRR |
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