Welcome To the Hoffman Amplifiers Forum
January 13, 2026, 06:06:03 am
Welcome To the Hoffman Amplifiers ForumJanuary 13, 2026, 06:06:03 am | ||
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Please do not use VPN's
Started by EL34 |
47 Replies
3231 Views |
December 25, 2025, 08:23:20 pmby svejkist |
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ALL-TIME great information
Started by PRR |
0 Replies
36416 Views |
April 16, 2018, 08:09:37 pm by PRR |
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1 Replies
55278 Views |
October 30, 2015, 01:24:25 pm by EL34 |
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What's this board for?
Started by EL34 |
0 Replies
31765 Views |
May 28, 2009, 04:14:29 pm by EL34 |
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NEW Bass Pre-amp Build HPF/Compressor
Started by Wardy |
29 Replies
10265 Views |
January 13, 2026, 03:21:49 am by Wardy |
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Ab763 V3 issue
Started by hmontgomery |
5 Replies
71 Views |
January 13, 2026, 02:15:15 am by pdf64 |
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16 Replies
1053 Views |
January 12, 2026, 08:49:53 pm by smackoj |
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Where to ground the first filter cap?
Started by wsscott |
21 Replies
1311 Views |
January 12, 2026, 07:26:55 pm by Willabe |
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Two channel class A amplifier
Started by Banjan73 |
7 Replies
125 Views |
January 12, 2026, 07:14:15 pm by Banjan73 |
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AC15 clone cathode resistor question
Started by Big_Mike |
9 Replies
522 Views |
January 12, 2026, 03:32:16 am by Merlin |
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4 Replies
85 Views |
January 11, 2026, 06:35:45 pm by waldner |
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5 Replies
259 Views |
January 11, 2026, 02:43:28 pm by Lectroid |
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Changing tone stack sanity check
Started by uki |
4 Replies
213 Views |
January 10, 2026, 01:55:09 pm by SEL49 |
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2 Replies
78 Views |
January 10, 2026, 11:04:01 am by Grantorino |
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5 Replies
666 Views |
January 09, 2026, 08:28:43 pm by glass54 |
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Dark half-power Hoffman AC30
Started by MORE_Guitar_Solos |
23 Replies
2601 Views |
January 08, 2026, 10:57:44 pm by Big_Mike |
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76 Replies
3476 Views |
January 08, 2026, 05:24:49 pm by shooter |
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Blues Jr. Rectifier Diode Question.
Started by Thisismyname |
5 Replies
582 Views |
January 08, 2026, 11:37:40 am by acheld |
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2 Replies
186 Views |
January 06, 2026, 05:55:23 pm by whoops |
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Benson Monarch Reverb tone switch
Started by Diverted |
2 Replies
197 Views |
January 06, 2026, 04:39:21 pm by Diverted |
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8 Replies
778 Views |
January 06, 2026, 12:56:45 pm by astronomicum |
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Dumb biasing question
Started by Lectroid |
8 Replies
776 Views |
January 06, 2026, 11:03:10 am by shooter |
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5 Replies
387 Views |
January 06, 2026, 05:22:15 am by Grantorino |
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1 Replies
138 Views |
January 05, 2026, 12:58:55 pm by pdf64 |
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7 Replies
782 Views |
January 04, 2026, 06:00:41 pm by roarshock |
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8 Replies
782 Views |
January 04, 2026, 03:16:08 pm by wsscott |
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7 Replies
619 Views |
January 03, 2026, 04:32:34 pm by jjasilli |
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4 Replies
267 Views |
January 03, 2026, 03:30:24 pm by kagliostro |
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AC15 clone using Hoffman AC30 layout
Started by Big_Mike |
4 Replies
896 Views |
January 03, 2026, 11:22:30 am by Big_Mike |
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15 Replies
793 Views |
January 02, 2026, 07:20:07 pm by AlNewman |
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18watt stout in AO35 chassis
Started by dmp |
20 Replies
3773 Views |
January 02, 2026, 11:50:28 am by Lectroid |
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Filmosound 385 tone stack mod question
Started by markmalin |
14 Replies
964 Views |
January 02, 2026, 09:33:57 am by markmalin |
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Vox AC30/6 Tremolo Woes c.1960
Started by misterc57 |
4 Replies
553 Views |
January 02, 2026, 08:10:51 am by misterc57 |
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30 Replies
15289 Views |
January 01, 2026, 10:28:02 pm by Redwood |
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Fitting higher value PSU filter caps
Started by Yosser |
6 Replies
403 Views |
January 01, 2026, 09:13:02 pm by HotBluePlates |
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Peavey Mace c.1977 120 Cycle Hum
Started by misterc57 |
0 Replies
180 Views |
January 01, 2026, 01:21:06 pm by misterc57 |
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What to do with a spare 100k pot?
Started by Jennings |
5 Replies
582 Views |
January 01, 2026, 07:26:21 am by Jennings |
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THE HOWLER
Started by TIMBO |
1 Replies
426 Views |
December 30, 2025, 08:55:09 pm by TIMBO |
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Valco Early Model 1215 Voltages
Started by W5FH |
2 Replies
321 Views |
December 30, 2025, 06:35:21 pm by W5FH |
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9 Replies
510 Views |
December 30, 2025, 01:52:07 pm by astronomicum |
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117 Replies
8094 Views |
December 29, 2025, 07:05:57 pm by waldner |
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5 Replies
722 Views |
December 28, 2025, 02:19:18 pm by HotBluePlates |
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AC15 combo chassis
Started by Big_Mike |
1 Replies
375 Views |
December 27, 2025, 04:34:52 pm by bmccowan |
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5e9 Layout with 12DW7 Reverb
Started by J3ona1 |
18 Replies
820 Views |
December 27, 2025, 12:38:20 pm by tubeswell |
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Tube Bias with a hum after effect
Started by pbman1953 |
1 Replies
299 Views |
December 27, 2025, 11:50:28 am by tubeswell |
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PT safety margin?
Started by Lectroid |
4 Replies
464 Views |
December 25, 2025, 10:24:50 am by Lectroid |
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Pro Junior Hoffman kit
Started by RTL |
8 Replies
738 Views |
December 24, 2025, 03:47:38 pm by RTL |
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8 Replies
665 Views |
December 24, 2025, 01:39:26 pm by pbman1953 |
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Not your usual grounding question . . .
Started by acheld |
3 Replies
449 Views |
December 23, 2025, 02:07:46 pm by acheld |
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Important grounding question
Started by chaf87 |
5 Replies
649 Views |
December 23, 2025, 11:34:21 am by pdf64 |
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