Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 04:59:02 pm
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 04:59:02 pm | ||
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2 Replies
3764 Views |
January 12, 2021, 07:24:13 pmby sluckey |
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COS build
Started by Auke Jolman |
16 Replies
7152 Views |
January 12, 2021, 11:28:07 am by Auke Jolman |
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Cathode biasing a pair of EL34s
Started by dude |
10 Replies
8190 Views |
January 11, 2021, 07:45:32 pm by dude |
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14 Replies
7155 Views |
January 11, 2021, 03:44:21 am by Latole |
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Rob Robinette RR 763 BUILD WHAT CHASSIS?
Started by mikhett |
1 Replies
3919 Views |
January 10, 2021, 03:33:59 pm by jordan86 |
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Hagström 310 - make it more Supro-esque?
Started by Sesh |
11 Replies
7208 Views |
January 10, 2021, 03:23:29 pm by sluckey |
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21 Replies
10063 Views |
January 10, 2021, 02:01:26 pm by Mike_J |
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PPIMV question
Started by dude |
11 Replies
6382 Views |
January 10, 2021, 12:03:15 pm by dude |
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7 Replies
4603 Views |
January 09, 2021, 08:05:28 am by pbman1953 |
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Why did my filter cap go poof?
Started by jewishjay |
29 Replies
10352 Views |
January 08, 2021, 08:40:18 pm by sluckey |
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26 Replies
14569 Views |
January 08, 2021, 05:02:36 pm by AHeck |
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Biasing/hum issue, Fender Bassman AB165
Started by Diverted |
5 Replies
4722 Views |
January 08, 2021, 02:29:41 pm by Diverted |
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Good deal on a Dual Showman?
Started by jordan86 |
23 Replies
8538 Views |
January 08, 2021, 12:27:05 pm by jordan86 |
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24 Replies
8890 Views |
January 08, 2021, 11:18:58 am by Mike_J |
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power rating calculations (math inside)
Started by Sansteeth |
12 Replies
5713 Views |
January 07, 2021, 10:49:43 pm by 2deaf |
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Super reverb tube bias
Started by Underwood |
5 Replies
5144 Views |
January 07, 2021, 05:46:28 am by sluckey |
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Musicson 80+80
Started by chocopower |
17 Replies
7917 Views |
January 07, 2021, 04:08:08 am by chocopower |
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0 Replies
3318 Views |
January 06, 2021, 06:13:26 pm by dankinzelman |
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1 Replies
3284 Views |
January 06, 2021, 02:17:09 pm by mebond11 |
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New Year Modularity - New Preamp Build
Started by Crestone |
15 Replies
6763 Views |
January 06, 2021, 06:18:49 am by Crestone |
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Dual single ended 6V6 build issue
Started by Morse-Electric |
20 Replies
9971 Views |
January 05, 2021, 04:40:29 pm by PRR |
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Supro 1605r can't find a schematic!
Started by swingarm |
6 Replies
5948 Views |
January 05, 2021, 11:53:16 am by swingarm |
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I broke my amp
Started by dwinstonwood |
37 Replies
10386 Views |
January 05, 2021, 09:14:02 am by dwinstonwood |
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dual 6V6 single end by DummyLoad
Started by Mungo Park |
2 Replies
3756 Views |
January 04, 2021, 10:28:54 pm by Mungo Park |
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3 Replies
3774 Views |
January 04, 2021, 09:22:19 pm by Gareth81 |
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12AX7 Stage 1 + 2 Biasing
Started by jordan86 |
3 Replies
5498 Views |
January 04, 2021, 08:50:17 pm by AmberB |
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Sluckey AC-15R Build Reverb Issue
Started by shaun |
14 Replies
5873 Views |
January 04, 2021, 08:13:18 pm by sluckey |
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First Build - Pro Junior???
Started by shark38j |
2 Replies
4031 Views |
January 04, 2021, 06:14:34 pm by scstill |
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0 Replies
3632 Views |
January 04, 2021, 03:04:44 pm by Opry Audio |
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ValveWizard PCB / BJ Hybrid Project
Started by acheld |
7 Replies
5839 Views |
January 04, 2021, 01:54:22 pm by Crestone |
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Need help picking parts on the store
Started by proaudioguy |
4 Replies
3862 Views |
January 04, 2021, 10:09:07 am by sluckey |
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4 Replies
5391 Views |
January 04, 2021, 04:36:32 am by DummyLoad |
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16 Replies
8136 Views |
January 03, 2021, 10:01:31 pm by Lectroid |
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Cap value not specified in 5e3
Started by Colas LeGrippa |
2 Replies
3462 Views |
January 03, 2021, 08:23:27 pm by Colas LeGrippa |
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10 Replies
5810 Views |
January 03, 2021, 12:15:04 pm by Lavely |
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Hoffman Pro Jr Turret board
Started by EL34 |
26 Replies
14864 Views |
January 03, 2021, 11:24:12 am by EL34 |
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34 Replies
12315 Views |
January 02, 2021, 05:26:26 pm by thetragichero |
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14 Replies
8412 Views |
January 02, 2021, 01:47:14 pm by NotWesYet |
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Deluxe Micro Build Issues
Started by scstill |
18 Replies
7477 Views |
January 02, 2021, 01:35:04 pm by shooter |
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Tone Stack distortion
Started by knebiter |
5 Replies
4156 Views |
January 01, 2021, 04:55:28 pm by knebiter |
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9 Replies
6285 Views |
January 01, 2021, 04:10:53 pm by sluckey |
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Stromberg Carlson Tone Stack Mod?
Started by jonathan_kea |
7 Replies
4995 Views |
January 01, 2021, 03:22:14 pm by jonathan_kea |
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12AX7 as a reverb driver
Started by Patrik |
41 Replies
16181 Views |
January 01, 2021, 11:48:20 am by sluckey |
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Tore Vibe 5H15T Tremolo Circuit
Started by TurboGuitarMelton |
2 Replies
3971 Views |
January 01, 2021, 01:15:57 am by PRR |
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3 Replies
3788 Views |
December 31, 2020, 05:14:19 pm by centervolume |
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Supro 6497 Circuit/Schematic
Started by scstill |
2 Replies
3995 Views |
December 31, 2020, 04:29:40 pm by scstill |
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5 Replies
4666 Views |
December 31, 2020, 01:25:55 pm by PRR |
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Tapping a filter cap creates crackle
Started by pbman1953 |
33 Replies
10823 Views |
December 31, 2020, 07:35:42 am by pbman1953 |
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22 Replies
9853 Views |
December 30, 2020, 03:58:45 pm by Mike_J |
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8 Replies
4502 Views |
December 30, 2020, 01:45:44 pm by coreythompsonhm |
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