Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 02:40:58 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 02:40:58 am | ||
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ALL-TIME great information
Started by PRR |
0 Replies
25023 Views |
April 16, 2018, 08:09:37 pmby PRR |
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1 Replies
45511 Views |
October 30, 2015, 01:24:25 pm by EL34 |
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What's this board for?
Started by EL34 |
0 Replies
22305 Views |
May 28, 2009, 04:14:29 pm by EL34 |
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Troubleshooting a new build amp
Started by Wardy |
0 Replies
4 Views |
September 06, 2025, 02:14:52 am by Wardy |
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Deluxe 5E3 tone stack
Started by Lectroid |
11 Replies
269 Views |
September 05, 2025, 03:58:17 pm by kagliostro |
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192 Replies
22225 Views |
September 05, 2025, 02:58:10 pm by wsscott |
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Questions about Rehabilitating a 65 Super Reverb
Started by Dumbmonkey « 1 2 » |
56 Replies
2652 Views |
September 05, 2025, 09:17:00 am by stratomaster |
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Classic 50 volume reduction
Started by proaudioguy |
2 Replies
86 Views |
September 04, 2025, 07:33:15 pm by stratomaster |
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Bias Wiggle Tremolo with 7591?
Started by dwinstonwood |
4 Replies
251 Views |
September 04, 2025, 12:49:55 pm by dwinstonwood |
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Hum and Buzz in Cordovox Build
Started by scstill |
14 Replies
570 Views |
September 04, 2025, 09:40:04 am by scstill |
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5879 tube data sheet question
Started by tubenit |
4 Replies
281 Views |
September 04, 2025, 05:34:45 am by HotBluePlates |
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Hiwatt DR103 FX loop
Started by SoundCity85 |
37 Replies
8979 Views |
September 03, 2025, 03:43:24 pm by wavley |
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99 Replies
17860 Views |
September 03, 2025, 02:40:02 pm by Sonny ReVerb |
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3 Replies
215 Views |
September 03, 2025, 11:35:42 am by Bieworm |
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25 Replies
823 Views |
September 02, 2025, 06:20:08 am by Merlin |
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Reverb Tone Shifting with Dwell knob
Started by Lectroid |
14 Replies
1334 Views |
September 01, 2025, 02:48:23 pm by stratomaster |
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Hum in 5E3
Started by FREYES_7 |
11 Replies
645 Views |
September 01, 2025, 02:33:58 pm by mresistor |
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Pre-Amp Anode Voltage Ibanez Thermion
Started by philschl |
3 Replies
220 Views |
September 01, 2025, 06:14:17 am by philschl |
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63 Replies
10636 Views |
September 01, 2025, 01:52:26 am by Avraxas |
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19 Replies
346 Views |
September 01, 2025, 01:25:45 am by Grantorino |
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What is this, a local NFB ??
Started by kagliostro |
4 Replies
160 Views |
August 31, 2025, 10:40:26 am by kagliostro |
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18 Replies
1269 Views |
August 30, 2025, 08:26:31 pm by TIMBO |
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Resistor identification
Started by 1Ab |
21 Replies
1336 Views |
August 30, 2025, 01:30:46 pm by 1Ab |
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5 Replies
472 Views |
August 29, 2025, 10:20:06 pm by stratomaster |
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21 Replies
747 Views |
August 29, 2025, 01:01:53 pm by kagliostro |
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Cordovox Conversion
Started by scstill |
10 Replies
992 Views |
August 28, 2025, 11:59:37 pm by rafe |
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Cathodyne bias problem
Started by scstill |
2 Replies
111 Views |
August 28, 2025, 05:04:06 pm by scstill |
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15 Replies
790 Views |
August 28, 2025, 09:41:21 am by Willabe |
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20 Replies
3042 Views |
August 28, 2025, 03:33:36 am by tubeswell |
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22 Replies
835 Views |
August 27, 2025, 01:24:10 pm by Platefire |
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HR DeVille number two.
Started by Bluebark |
20 Replies
894 Views |
August 27, 2025, 09:11:53 am by Bluebark |
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Sound City 120 is in a bad way
Started by Williamblake |
49 Replies
12181 Views |
August 26, 2025, 02:56:11 pm by Williamblake |
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12AZ7 as DC Cathode Follower?
Started by dwinstonwood |
3 Replies
158 Views |
August 26, 2025, 11:32:16 am by tubeswell |
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Fender Bassman AC568 issue
Started by retrorod |
8 Replies
471 Views |
August 26, 2025, 05:54:29 am by retrorod |
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NEW Bass Pre-amp Build HPF/Compressor
Started by Wardy |
23 Replies
3081 Views |
August 26, 2025, 05:23:04 am by Wardy |
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Mic Preamp Power Supply Questions
Started by Jonas |
6 Replies
555 Views |
August 25, 2025, 06:58:50 pm by Jonas |
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33 Replies
11318 Views |
August 25, 2025, 04:42:10 pm by tubeswell |
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Bugera 333XL-212 power amp stage problem
Started by Carlito |
6 Replies
660 Views |
August 25, 2025, 09:59:29 am by scstill |
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Stand-Alone 5V/3A Filament TX W/CT
Started by dwinstonwood |
4 Replies
310 Views |
August 22, 2025, 02:04:10 pm by dwinstonwood |
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19 Replies
1064 Views |
August 21, 2025, 06:00:30 pm by wsscott |
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8 Replies
563 Views |
August 21, 2025, 04:36:49 pm by Merlin |
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So I tried the Hybrid Tube/SS rectifier...
Started by Nathan |
4 Replies
463 Views |
August 20, 2025, 09:58:43 am by Nathan |
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4 Replies
374 Views |
August 20, 2025, 05:11:11 am by HotBluePlates |
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Bias high voltage on HR Deville
Started by Bluebark |
8 Replies
502 Views |
August 19, 2025, 12:14:44 pm by shooter |
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Vvr and bias switching
Started by Mike-p |
6 Replies
460 Views |
August 18, 2025, 05:48:05 pm by Mike-p |
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"popping" Fender Twin Amp '57
Started by Sansteeth |
16 Replies
1941 Views |
August 18, 2025, 07:23:05 am by Sansteeth |
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70's Italian amp "Sound Big 10" schematic?
Started by JvR |
19 Replies
4013 Views |
August 16, 2025, 12:31:03 am by isaac_teller |
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APD-8025H Color Codes
Started by Richs1979 |
8 Replies
835 Views |
August 15, 2025, 09:15:48 pm by Richs1979 |
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12 Replies
998 Views |
August 15, 2025, 04:19:55 pm by DummyLoad |
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6M5 6EM5 Valves in Push Pull
Started by TIMBO |
15 Replies
1265 Views |
August 13, 2025, 10:55:24 pm by kagliostro |
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