Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 10:39:55 am
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 10:39:55 am | ||
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18 Replies
7464 Views |
November 28, 2023, 11:05:34 amby jloewenheim |
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1950's Gibson GA 20 Schematic?
Started by plexi50 |
26 Replies
16038 Views |
November 28, 2023, 03:53:16 am by Arnenym |
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Any Ampeg experts out there?
Started by punkykatt |
12 Replies
3117 Views |
November 27, 2023, 02:39:37 pm by tdvt |
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One Tube 5F1
Started by scstill |
11 Replies
3740 Views |
November 27, 2023, 01:34:48 pm by scstill |
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3 Replies
2033 Views |
November 27, 2023, 11:00:37 am by MWagemaker |
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6 Replies
3797 Views |
November 27, 2023, 03:27:13 am by Latole |
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116 Replies
27610 Views |
November 26, 2023, 01:06:21 pm by stratomaster |
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1 Replies
1726 Views |
November 25, 2023, 10:10:22 pm by PRR |
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2 Replies
1947 Views |
November 25, 2023, 07:25:26 pm by ALBATROS1234 |
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1 Replies
1663 Views |
November 25, 2023, 03:57:27 pm by shooter |
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2 Replies
1956 Views |
November 25, 2023, 12:43:13 pm by rafe |
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5 Replies
2572 Views |
November 25, 2023, 09:11:37 am by plexi50 |
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Help with Hum - PR Build
Started by indiehouse |
32 Replies
6267 Views |
November 25, 2023, 08:44:37 am by tubeswell |
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AB763 Studio Mod
Started by SurvivorSound |
45 Replies
10224 Views |
November 24, 2023, 07:27:37 pm by SurvivorSound |
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2 Replies
1919 Views |
November 24, 2023, 07:20:38 pm by hiegdk |
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0 Replies
2098 Views |
November 22, 2023, 01:53:04 pm by Makita |
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CT question in an OT
Started by newguitarsmell |
3 Replies
2210 Views |
November 21, 2023, 11:41:27 am by newguitarsmell |
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PT diagram
Started by Nathan |
3 Replies
2313 Views |
November 21, 2023, 11:17:42 am by pdf64 |
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Express circuit variations
Started by Ledvedder |
0 Replies
1858 Views |
November 20, 2023, 11:29:27 pm by Ledvedder |
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5F1 Champ Build Diagnosis
Started by GarlandKelley |
28 Replies
6669 Views |
November 20, 2023, 10:54:29 pm by PRR |
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Modeling tube power amp ideas
Started by guitardude57 |
4 Replies
3017 Views |
November 20, 2023, 04:01:17 am by guitardude57 |
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Trainwreck Express weird note decay
Started by Ledvedder |
6 Replies
3171 Views |
November 19, 2023, 10:42:07 am by tubenit |
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2 Replies
2441 Views |
November 18, 2023, 08:15:47 pm by MSVguitar |
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Hammond transformer primary question
Started by Diverted |
4 Replies
2852 Views |
November 18, 2023, 04:11:10 pm by HotBluePlates |
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P.I. grid leak question
Started by joesatch |
6 Replies
3821 Views |
November 18, 2023, 03:05:58 pm by HotBluePlates |
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5 Replies
3849 Views |
November 18, 2023, 05:30:36 am by sluckey |
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vintage fender choke question
Started by jhanly |
3 Replies
2992 Views |
November 17, 2023, 04:16:01 am by Latole |
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OT matching crisis.
Started by joesatch |
8 Replies
3857 Views |
November 16, 2023, 12:57:30 pm by sluckey |
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3 Replies
3157 Views |
November 16, 2023, 12:46:20 pm by Deric |
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BlackVibeWatt
Started by hiegdk |
5 Replies
3475 Views |
November 16, 2023, 09:11:38 am by GroundhogKen |
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Vintage Acoustic amp switches
Started by pbman1953 |
0 Replies
2468 Views |
November 16, 2023, 08:43:37 am by pbman1953 |
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DeArmond R15t - Tremolo Help
Started by O-Fuzz |
16 Replies
5401 Views |
November 15, 2023, 07:50:07 pm by O-Fuzz |
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6g15 "Blues/Surf" Mod
Started by macfadyb |
3 Replies
3504 Views |
November 15, 2023, 03:40:50 pm by sluckey |
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Fender Pro Reverb
Started by makjoh |
13 Replies
5239 Views |
November 14, 2023, 11:50:36 am by makjoh |
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AO-35 PT question
Started by joesatch |
19 Replies
5217 Views |
November 14, 2023, 11:26:36 am by sluckey |
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The Rob Robinette JCM 800/22 6V6
Started by ToneQwest |
17 Replies
7929 Views |
November 13, 2023, 05:53:34 pm by ToneQwest |
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6 pin power tubes?
Started by ALBATROS1234 |
5 Replies
3827 Views |
November 13, 2023, 01:31:45 pm by kagliostro |
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Fender 125P34AX
Started by Esquirefreak |
9 Replies
4420 Views |
November 13, 2023, 09:56:55 am by Esquirefreak |
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54 Replies
11827 Views |
November 13, 2023, 02:38:15 am by Latole |
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Canadian "Symphonic"
Started by rafe |
10 Replies
3826 Views |
November 12, 2023, 08:35:02 pm by rafe |
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6G2-ish build with reverb
Started by burt_toast |
23 Replies
5265 Views |
November 12, 2023, 01:01:30 pm by tubeswell |
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5 Replies
3072 Views |
November 11, 2023, 01:01:15 pm by sluckey |
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Mixing parallel triodes
Started by clyde |
8 Replies
3983 Views |
November 10, 2023, 07:50:20 pm by PRR |
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Output transformer matching question.
Started by Tapsnap |
4 Replies
3030 Views |
November 10, 2023, 03:46:48 pm by PRR |
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Maintenance for old potentiometers
Started by Esquirefreak |
7 Replies
3587 Views |
November 10, 2023, 09:56:11 am by kagliostro |
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Input stages, biasing
Started by peacocksuit |
8 Replies
3673 Views |
November 10, 2023, 07:32:42 am by HotBluePlates |
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6 Replies
3778 Views |
November 10, 2023, 06:43:15 am by jjasilli |
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April 1937
Started by PRR |
13 Replies
4693 Views |
November 09, 2023, 10:38:51 pm by tubeswell |
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Old-school cap notation/Gibson schematic
Started by tdvt |
5 Replies
3101 Views |
November 09, 2023, 05:14:25 pm by sluckey |
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Oscillation from Presence Control
Started by jewishjay |
17 Replies
5384 Views |
November 09, 2023, 03:21:50 pm by AlNewman |
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