Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 10:43:45 am
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 10:43:45 am | ||
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Does it exist a class D tube amp ?
Started by kagliostro |
18 Replies
5782 Views |
September 29, 2023, 03:10:41 pmby kagliostro |
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14 Replies
4699 Views |
September 29, 2023, 01:21:33 am by Bieworm |
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53 Replies
10456 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
8652 Views |
September 28, 2023, 11:31:34 pm by zozoe |
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7 Replies
3499 Views |
September 28, 2023, 03:56:38 pm by HotBluePlates |
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Audio Transformer reference
Started by acheld |
29 Replies
6279 Views |
September 28, 2023, 03:42:34 pm by HotBluePlates |
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Hammond AO-35 conversion
Started by joesatch |
7 Replies
4125 Views |
September 28, 2023, 11:09:59 am by bmccowan |
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5E3 uneven frequency response
Started by Arry |
17 Replies
4876 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
2521 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
7336 Views |
September 27, 2023, 07:32:58 pm by AlNewman |
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Unusual capacitor values
Started by jada3909 |
3 Replies
2279 Views |
September 27, 2023, 06:21:31 pm by acheld |
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Princeton Reverb Transformer questions
Started by J3ona1 |
12 Replies
4215 Views |
September 27, 2023, 08:50:27 am by Willabe |
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15 Replies
3855 Views |
September 26, 2023, 10:39:12 pm by SoundmasterG |
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Heater Center Tap Question
Started by imgumby001 |
11 Replies
3480 Views |
September 26, 2023, 05:15:08 pm by passaloutre |
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9 Replies
4754 Views |
September 26, 2023, 01:06:59 pm by Jalmeida |
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7 Replies
3870 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
5775 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
3615 Views |
September 25, 2023, 12:21:55 pm by tubeswell |
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potentiometers that stay at noon?
Started by fossilshark |
1 Replies
2223 Views |
September 25, 2023, 09:24:13 am by sluckey |
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RCA 307 conversion
Started by AlNewman |
28 Replies
6713 Views |
September 25, 2023, 01:49:45 am by AlNewman |
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transformer identification help
Started by joesatch |
6 Replies
3374 Views |
September 24, 2023, 12:41:41 pm by HotBluePlates |
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NOS/Vintage tubes worth it??
Started by Jalmeida |
18 Replies
5001 Views |
September 24, 2023, 12:30:29 pm by HotBluePlates |
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1 Replies
2433 Views |
September 24, 2023, 11:03:40 am by HotBluePlates |
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6ak5 in place of EF86
Started by imgumby001 |
4 Replies
3031 Views |
September 24, 2023, 08:50:18 am by imgumby001 |
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OPT defective ?
Started by Colas LeGrippa |
9 Replies
3799 Views |
September 23, 2023, 01:57:32 pm by Platefire |
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Vox with Fender channels?
Started by roseblood11 |
3 Replies
3153 Views |
September 23, 2023, 07:17:07 am by dwinstonwood |
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Univox U102 Combo Cabinet Dimensions
Started by astronomicum |
5 Replies
2748 Views |
September 22, 2023, 09:28:11 pm by bmccowan |
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Bassman 50 grounding
Started by labb |
3 Replies
2467 Views |
September 22, 2023, 12:50:06 pm by PRR |
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Fender Bassman 50
Started by labb |
30 Replies
8089 Views |
September 21, 2023, 05:02:28 pm by shooter |
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5 Replies
2873 Views |
September 21, 2023, 01:29:22 pm by Williamblake |
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24 Replies
8244 Views |
September 21, 2023, 12:58:16 pm by stratomaster |
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51 Replies
12014 Views |
September 21, 2023, 05:41:33 am by Dave |
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9 Replies
3726 Views |
September 21, 2023, 12:47:15 am by kagliostro |
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Effects loop build question
Started by audiosalvage |
1 Replies
2413 Views |
September 20, 2023, 09:49:33 pm by PRR |
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Speaker jack speaker loads
Started by Jalmeida |
2 Replies
2405 Views |
September 20, 2023, 12:33:56 pm by PRR |
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Variac use in new build startup
Started by dude |
3 Replies
2939 Views |
September 19, 2023, 09:24:32 pm by bmccowan |
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National Dobro 400
Started by isaac_teller |
4 Replies
2965 Views |
September 19, 2023, 10:47:42 am by isaac_teller |
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Resistor placement
Started by Diverted |
8 Replies
3053 Views |
September 19, 2023, 10:29:58 am by Latole |
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Blues Jr frying preamp tubes
Started by mxrshiver |
5 Replies
3029 Views |
September 19, 2023, 06:09:10 am by pdf64 |
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Gibson GA-30 need help picking capacitors
Started by delray |
11 Replies
4575 Views |
September 18, 2023, 10:40:31 pm by Platefire |
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11 Replies
3581 Views |
September 18, 2023, 09:26:51 am by kagliostro |
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Changing value of potentiometer
Started by Mypalmurph |
22 Replies
5488 Views |
September 18, 2023, 02:55:27 am by Colas LeGrippa |
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9 Replies
3873 Views |
September 17, 2023, 09:45:38 pm by HotBluePlates |
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Bassman 5F6-A build
Started by Keyboy |
15 Replies
4937 Views |
September 17, 2023, 09:38:55 pm by PRR |
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Musicman 2100 RD Power Transformer
Started by plexi50 |
3 Replies
2620 Views |
September 17, 2023, 06:42:52 pm by plexi50 |
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6V6 tweed bassman advice
Started by Bieworm |
38 Replies
8188 Views |
September 17, 2023, 01:20:45 pm by Bieworm |
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New Build with KT-88's
Started by W5FH |
1 Replies
2381 Views |
September 17, 2023, 08:50:15 am by W5FH |
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Revibe Idea, 3ft reverb tank
Started by paulcblais |
2 Replies
2325 Views |
September 17, 2023, 06:17:21 am by Williamblake |
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Ohms mismatch or swap output trans
Started by Mypalmurph |
4 Replies
2719 Views |
September 17, 2023, 05:22:32 am by pdf64 |
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Hoffman_AB763_1 channel Completed
Started by RoadShow |
4 Replies
3088 Views |
September 16, 2023, 04:45:06 pm by mresistor |
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