Welcome To the Hoffman Amplifiers ForumApril 28, 2026, 04:02:33 pm | ||
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Hammond M100 Ao29 on the bench
Started by LooseChange |
5 Replies
7384 Views |
by FYL |
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Marshall style PT with 7V heater winding...
Started by bruno |
16 Replies
9167 Views |
by sluckey |
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7 Replies
7127 Views |
by FYL |
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Need help identifying these Pots!
Started by Platefire |
13 Replies
7064 Views |
by Platefire |
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'75 Deluxe Reverb Overhaul Advice Needed
Started by Wilks |
7 Replies
5816 Views |
by pullshocks |
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Need Marshall schem and/or bit of info
Started by dynaman1 |
2 Replies
3732 Views |
by dynaman1 |
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JCM 900 tone opinions and known mods
Started by bnwitt |
7 Replies
6422 Views |
by tubenit |
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Blues Jr. Upgrade secrets
Started by Tiny_Daddy |
7 Replies
7313 Views |
by bigdaddy |
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Power & Standby switch alternatives
Started by Fresh_Start |
1 Replies
3659 Views |
by bigdaddy |
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6 Replies
5378 Views |
by bigdaddy |
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14 Replies
15383 Views |
by theundeadelvis |
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Silverface Twin Reverb
Started by Tiny_Daddy |
4 Replies
4378 Views |
by Tiny_Daddy |
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Some of the recents
Started by Madison |
5 Replies
5567 Views |
by LooseChange |
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Too many nice little amps
Started by TIMBO |
1 Replies
4352 Views |
by TIMBO |
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4 Replies
5841 Views |
by RicharD |
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New amp D-HRM cathode biased
Started by tubenit |
3 Replies
3930 Views |
by Geezer |
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What tube is this?
Started by SLW |
10 Replies
6568 Views |
by HotBluePlates |
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PT question
Started by bigdaddy |
20 Replies
9669 Views |
by eleventeen |
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Input shield connected to Plate??
Started by bnwitt |
13 Replies
9512 Views |
by bnwitt |
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EF86 Tubes
Started by NannerPuddin |
3 Replies
4451 Views |
by loogie |
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8 Replies
6319 Views |
by kagliostro |
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pots and high frequency
Started by Leevi |
12 Replies
6885 Views |
by bluesbear |
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Are these Wimas Worth Anything?
Started by jerryjg |
3 Replies
3957 Views |
by bluesbear |
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5 watt SLO
Started by Rev D |
1 Replies
5668 Views |
by JB |
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1 Replies
4023 Views |
by PRR |
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Proper bias voltage range for EL34s
Started by bnwitt |
4 Replies
9002 Views |
by bnwitt |
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HRM vs. 5E3 OD tone stack
Started by tubenit |
12 Replies
7660 Views |
by jojokeo |
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Hammond L133 Power Transformer
Started by Jack1962 |
3 Replies
5439 Views |
by Jack1962 |
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Circuit Digestion - Ampex MX-10
Started by RicharD |
16 Replies
13045 Views |
by PRR |
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6Ak6/6G6 info
Started by bigdaddy |
11 Replies
15557 Views |
by bigdaddy |
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Looking for AB763 transformer advice
Started by nateflanigan |
18 Replies
9530 Views |
by Bp-Plickner |
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humming in new build...grrrrr!
Started by phsyconoodler |
17 Replies
8999 Views |
by DummyLoad |
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5F6-A+5E3 combination
Started by harryk |
12 Replies
9298 Views |
by HotBluePlates |
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MOVED: PC Based Oscilloscope
Started by PRR |
0 Replies
3935 Views |
by PRR |
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reverb problem in 66 vibrolux
Started by blues man |
2 Replies
4105 Views |
by phsyconoodler |
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Are this tubes usable ?
Started by kagliostro |
16 Replies
8967 Views |
by Rev D |
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Thoughts on the EF184?
Started by Rev D |
5 Replies
13603 Views |
by Rev D |
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9 Replies
5848 Views |
by tubenit |
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9 Replies
7004 Views |
by SoundmasterG |
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Mating aa864 with ab165
Started by J Rindt |
4 Replies
4371 Views |
by J Rindt |
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Identifying source of Hum
Started by joelap |
10 Replies
7138 Views |
by sluckey |
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Help Identify this board
Started by Custom_Amp_30 |
18 Replies
8604 Views |
by Dave |
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Sovtek 5Y3GT went poof!
Started by mresistor |
10 Replies
7267 Views |
by Danskman |
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20 Replies
10285 Views |
by Platefire |
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(Re)intro and question about Fender PIs
Started by Blackdog |
17 Replies
10323 Views |
by PRR |
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Fender 75 wierd power tube issue
Started by bnwitt |
20 Replies
11290 Views |
by bnwitt |
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Harp Amps?
Started by nastyoldtech |
11 Replies
9346 Views |
by chuggy |
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Bias keeps changing on Hiwatt
Started by frank57 |
4 Replies
5365 Views |
by HotBluePlates |
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My newest build
Started by JayB |
11 Replies
6934 Views |
by JayB |
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Ground PI with power?
Started by theundeadelvis |
5 Replies
6309 Views |
by theundeadelvis |
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