Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 12:21:48 pm | ||
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800 circuit power section hum help!
Started by joesatch |
10 Replies
1401 Views |
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2 Replies
870 Views |
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Philips 1N4007G diode
Started by CordovaNate |
2 Replies
892 Views |
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Stand alone AMPEG Reverb
Started by Jonas |
18 Replies
1954 Views |
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14 Replies
5046 Views |
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JTM-18 EL84 Build Suggestions
Started by Rontone |
4 Replies
1504 Views |
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12AU7 Parallel Push Pull
Started by TIMBO |
21 Replies
5746 Views |
![]() by kagliostro |
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Diagnosing DRRI that cut out on client
Started by Choan |
4 Replies
864 Views |
![]() by dogburn |
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31 Replies
2379 Views |
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Transformer wiring.
Started by AC4 |
37 Replies
5116 Views |
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Parallel Single Ended 5F1
Started by TurboGuitarMelton |
30 Replies
9191 Views |
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Reliable source of tested 6P14P valves?
Started by Loomer |
6 Replies
1121 Views |
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EVH5150III pilot light issue
Started by fossilshark |
4 Replies
900 Views |
![]() by mresistor |
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Building Mojotone Princeton Reverb Kit
Started by yahoo |
6 Replies
1103 Views |
![]() by Lectroid |
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60 Replies
3488 Views |
![]() by wsscott |
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Using a 6Z4 to 6X4 adapter
Started by kasperbergholt |
5 Replies
1023 Views |
![]() by kasperbergholt |
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14 Replies
1816 Views |
![]() by kagliostro |
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Turrets on PCB (image request)
Started by Opry Audio |
6 Replies
1075 Views |
![]() by kagliostro |
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SE EL84 build - which PT?
Started by theRagman |
5 Replies
1050 Views |
![]() by theRagman |
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6BQ7a Valves
Started by TIMBO |
6 Replies
1061 Views |
![]() by kagliostro |
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18 Replies
4163 Views |
![]() by tubeswell |
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15 Replies
1718 Views |
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Parts not in Doug's catalog
Started by GuitarPilot65 |
5 Replies
1065 Views |
![]() by EL34 |
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16 Replies
1715 Views |
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19 Replies
6263 Views |
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Bluezmeister
Started by TIMBO |
23 Replies
3263 Views |
![]() by tubenit |
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5F6-A Build Stumped. Thank you!!!
Started by JimmyJam |
7 Replies
1012 Views |
![]() by mresistor |
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warbler-related project
Started by Willabe |
23 Replies
2086 Views |
![]() by Brinkman |
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5E9-A Depth control and PI bias
Started by stratomaster |
5 Replies
1034 Views |
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24 Replies
6011 Views |
![]() by jbefumo |
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Moonlight Tone Control
Started by Jonas |
1 Replies
845 Views |
![]() by Merlin |
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Fender 6G8/6G12 inspired build
Started by Esquirefreak |
12 Replies
1523 Views |
![]() by tubeswell |
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11 Replies
1269 Views |
![]() by scstill |
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6 Replies
968 Views |
![]() by Nathan |
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Acceptable noise in new amp build
Started by dusty712 |
2 Replies
919 Views |
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8 Replies
1025 Views |
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1046 Views |
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LND 150 FX loop pcb
Started by joesatch |
17 Replies
1811 Views |
![]() by tristanc |
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Riviera amp with a mysterious fault
Started by hylaphone |
6 Replies
1074 Views |
![]() by hylaphone |
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Tube Town EF86 AC18 Tweaks
Started by jjschessmaster |
4 Replies
971 Views |
![]() by jjschessmaster |
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3 Replies
873 Views |
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9 Replies
1143 Views |
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8 Replies
2849 Views |
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2 Replies
740 Views |
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Sunn Model T clone individual tube bias
Started by dusty712 |
30 Replies
4203 Views |
![]() by dusty712 |
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Got a Blues Deville RI
Started by Nathan |
18 Replies
1878 Views |
![]() by Willabe |
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38 Replies
11004 Views |
![]() by pullshocks |
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Choke placement and orientation
Started by dusty712 |
5 Replies
1135 Views |
![]() by dusty712 |
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Pentode operation in preamp and 2nd stage
Started by scstill |
3 Replies
1096 Views |
![]() by DummyLoad |
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