Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 04:00:19 pm | ||
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| passaloutre, Glenn, dogburn and 95 Guests are viewing this board. | ||||
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19 Replies
6575 Views |
by 12AX7 |
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cold bias gain stage?
Started by 12AX7 |
7 Replies
6681 Views |
by 12AX7 |
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Deluxe AB763 bias
Started by Leevi |
3 Replies
3458 Views |
by Leevi |
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D'Mars ODS build completed
Started by MakerDP |
21 Replies
10092 Views |
by MakerDP |
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50 Replies
15106 Views |
by Vdelli |
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Building the Power Amp Section ONLY
Started by jonyoungyi |
6 Replies
3776 Views |
by jonyoungyi |
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Princeton reverb 120v USA to 240v UK
Started by kaborex |
2 Replies
3832 Views |
by PRR |
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tremolo circuit
Started by J Rindt |
9 Replies
6132 Views |
by kagliostro |
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2 Replies
3435 Views |
by kagliostro |
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Master Volume placement in a 5C5 Tweed Pro
Started by Josiah |
7 Replies
5052 Views |
by Josiah |
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6Sj7 to 6SL7 or the other way
Started by Ed_Chambley |
2 Replies
6698 Views |
by Ed_Chambley |
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What is the purpose of paralleled triodes?
Started by 12AX7 |
11 Replies
16504 Views |
by Ed_Chambley |
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"Doug Circuits" VOX AC4 Ver.3
Started by Attila |
5 Replies
18237 Views |
by purpletele |
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43 Replies
15149 Views |
by warioblast |
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power amp and diff preamps
Started by Colas LeGrippa |
2 Replies
3204 Views |
by Colas LeGrippa |
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Peavey MACE hiss problem
Started by Colas LeGrippa |
13 Replies
6336 Views |
by Colas LeGrippa |
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cold bias gain stage
Started by 12AX7 |
11 Replies
5517 Views |
by 12AX7 |
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8 Replies
3936 Views |
by purpletele |
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isolate or ground a reverb send jack?
Started by G._Hoffman |
3 Replies
3113 Views |
by G._Hoffman |
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Bias setting problem
Started by Leevi |
24 Replies
8344 Views |
by whoops |
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bias vs gain flatness
Started by PRR |
1 Replies
2790 Views |
by PRR |
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Old Accordion Tube Amp
Started by drumslinger2000 |
21 Replies
6702 Views |
by drumslinger2000 |
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Biasing questions
Started by 12AX7 |
9 Replies
4339 Views |
by PRR |
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9 Replies
4546 Views |
by guitarsan221 |
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93 Replies
23694 Views |
by Jaymz77 |
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High gain preamp help
Started by dennyg |
6 Replies
4096 Views |
by PRR |
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McIntosh MC250
Started by p2pAmps |
15 Replies
9808 Views |
by p2pAmps |
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Erratic Voltage Readings
Started by jaster55 |
1 Replies
2730 Views |
by sluckey |
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Revibe Build ala sluckey
Started by Blind Lemon |
30 Replies
8877 Views |
by Blind Lemon |
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Conjunctive filter info please?
Started by jojokeo |
46 Replies
29392 Views |
by BetterOffShred |
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4 Replies
5347 Views |
by fiftynine |
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6 Replies
4276 Views |
by 3choplex |
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15 Replies
6058 Views |
by hesamadman |
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Sag Resistor
Started by Ambugaton |
5 Replies
7132 Views |
by eleventeen |
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4 Replies
3284 Views |
by Planobilly |
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Do you think....
Started by 12AX7 |
5 Replies
4034 Views |
by whoops |
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6 Replies
4760 Views |
by HotBluePlates |
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3 Replies
3287 Views |
by tubenit |
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Sunn Model-T/200s Hybrid
Started by BetterOffShred |
20 Replies
9789 Views |
by BetterOffShred |
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smoking amp on standby
Started by jim |
13 Replies
5376 Views |
by jim |
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5 Replies
3393 Views |
by HotBluePlates |
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Amp output issue/question
Started by Redfishbum |
2 Replies
3249 Views |
by Redfishbum |
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5 Replies
4103 Views |
by Planobilly |
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1 Replies
3131 Views |
by sluckey |
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Diode rectifier for Tube...
Started by Oddvar |
4 Replies
3194 Views |
by sluckey |
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Tonebox
Started by Sonny ReVerb |
39 Replies
11737 Views |
by Zarrir |
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1967 Super Reverb Blackface Tranny change?
Started by Oddvar |
5 Replies
3576 Views |
by Oddvar |
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Initial Bias adjustments
Started by jaster55 |
2 Replies
3476 Views |
by HotBluePlates |
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5 Replies
3856 Views |
by kagliostro |
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coupling caps n DC
Started by shooter |
25 Replies
7481 Views |
by shooter |
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