Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:46:43 am | ||
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zener diodes for voltage drop
Started by rdrgtr |
4 Replies
5363 Views |
![]() by Fresh_Start |
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Improving a Deluxe Reverb
Started by fiftynine |
19 Replies
11700 Views |
![]() by alerich |
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Feedback question...
Started by Ritchie200 |
1 Replies
2293 Views |
![]() by Geezer |
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Troubleshooting SE homebuilt amp
Started by Twangmaster |
11 Replies
4641 Views |
![]() by Twangmaster |
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Mars OD special "idea"
Started by tubenit |
2 Replies
2614 Views |
![]() by 67polara |
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Blues Jr - Odd Topology
Started by Fresh_Start |
7 Replies
4947 Views |
![]() by jjasilli |
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Hammond Universal 125d OT
Started by TIMBO |
7 Replies
4861 Views |
![]() by TIMBO |
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5E3/5G9 Hotswitch mod
Started by deqqed |
4 Replies
3017 Views |
![]() by topbrent |
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Where have all the 6550's gone?
Started by bigsbybender |
12 Replies
5183 Views |
![]() by simonallaway |
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data sheet for EH 7591 power tube
Started by punkykatt |
5 Replies
4721 Views |
![]() by FYL |
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Sovtek vs. Electro-Harmonix 12AX7
Started by panhead |
14 Replies
19125 Views |
![]() by bluesbear |
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100Rs for heater artificial CT ?
Started by Madison |
15 Replies
8015 Views |
![]() by The_Gaz |
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Ampeg V2 No Filiment Light
Started by plexi50 |
7 Replies
4122 Views |
![]() by eleventeen |
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12AX7 With no Glow?
Started by Platefire |
2 Replies
3157 Views |
![]() by Platefire |
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5 Replies
4433 Views |
![]() by LooseChange |
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twin reverb, power tube current, etc.
Started by CraigB |
6 Replies
3340 Views |
![]() by mresistor |
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8 Replies
4351 Views |
![]() by PRR |
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Lar mar master
Started by phsyconoodler |
12 Replies
5612 Views |
![]() by phsyconoodler |
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5 Replies
3285 Views |
![]() by Tone Junkie |
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11 Replies
4120 Views |
![]() by tubeswell |
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13 Replies
5326 Views |
![]() by Fresh_Start |
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New 5f1 build squeals
Started by mpryor224 |
19 Replies
9865 Views |
![]() by stingray_65 |
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telephone troubleshooting a 5E3 Mission Kit
Started by dwp |
5 Replies
4211 Views |
![]() by phsyconoodler |
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old made in USA 12AU7's
Started by oldhippy |
17 Replies
9094 Views |
![]() by bigsbybender |
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OT wiring Question
Started by Platefire |
7 Replies
3764 Views |
![]() by Platefire |
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Power transformers test method ?
Started by kagliostro |
7 Replies
7023 Views |
![]() by kagliostro |
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Help Identifying Transformers
Started by knotscott |
18 Replies
7178 Views |
![]() by PRR |
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Tos build done
Started by Tone Junkie |
10 Replies
4247 Views |
![]() by Tone Junkie |
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10 Replies
4697 Views |
![]() by Shrapnel |
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More loose power amp ?
Started by mat |
3 Replies
2817 Views |
![]() by phsyconoodler |
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11 Replies
5573 Views |
![]() by Boots Deville |
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MOVED: Anyone want a cat?
Started by tubenit |
0 Replies
2928 Views |
![]() by tubenit |
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TOS (TIMBO'S OUTSTANDING SUCCESS)!!!!
Started by TIMBO |
14 Replies
7670 Views |
![]() by TIMBO |
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12au7 tube help and directions
Started by Tone Junkie |
8 Replies
6313 Views |
![]() by Tone Junkie |
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Compactrons
Started by stingray_65 |
3 Replies
3441 Views |
![]() by stingray_65 |
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LED instead of traditional Fender Lamp
Started by samato |
34 Replies
20067 Views |
![]() by PRR |
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jcm 900 model 4100 output transformer
Started by six el six |
7 Replies
7128 Views |
![]() by FYL |
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390-0-390 for 50w marshall?
Started by rdrgtr |
26 Replies
11187 Views |
![]() by imaradiostar |
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TOS schematic values and BOM??
Started by 67polara |
12 Replies
5322 Views |
![]() by PRR |
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MOVED: Very interesting quote
Started by tubenit |
0 Replies
2486 Views |
![]() by tubenit |
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D_mble build into TOS
Started by mat |
19 Replies
7078 Views |
![]() by mat |
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1 Replies
2658 Views |
![]() by Geezer |
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28 Replies
13505 Views |
![]() by FranciscoPerez |
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An amp with 2 separate PI's
Started by macula56 |
6 Replies
3639 Views |
![]() by macula56 |
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Soldering question regarding turrets
Started by Platefire |
12 Replies
5618 Views |
![]() by EL34 |
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18 watt volume/tone with 1M pots ?
Started by Madison |
9 Replies
5527 Views |
![]() by Madison |
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20 Replies
8743 Views |
![]() by Platefire |
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2 Replies
5959 Views |
![]() by PRR |
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my se el84 running at 370 vdc ?
Started by john_t |
23 Replies
8028 Views |
![]() by john_t |
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MOVED: Schematics for "Suhr" sound amps
Started by EL34 |
0 Replies
6376 Views |
![]() by EL34 |
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