Welcome To the Hoffman Amplifiers ForumMarch 12, 2026, 04:32:48 pm | ||
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Univox Help Needed
Started by cdmarion |
22 Replies
8634 Views |
by Ritchie200 |
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Bassman AA865 - {really AC568}
Started by Lizard King |
14 Replies
7911 Views |
by Lizard King |
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Hum in a GA-19RVT.......
Started by Jack_Hester |
36 Replies
13420 Views |
by Jack_Hester |
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6G9 Tremolux bias questions
Started by Gone_Fishing |
12 Replies
6164 Views |
by sluckey |
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13 Replies
9098 Views |
by six el six |
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24 Replies
11596 Views |
by smackoj |
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8 Replies
5171 Views |
by HotBluePlates |
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12 Replies
6079 Views |
by kagliostro |
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HRD Crackling: Update Sucess!
Started by plexi50 |
32 Replies
9621 Views |
by phsyconoodler |
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coupling caps quality
Started by Colas LeGrippa |
27 Replies
18338 Views |
by Colas LeGrippa |
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Mitchell Pro 100 Schematics?
Started by balcorn80 |
8 Replies
8160 Views |
by HotBluePlates |
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Valco tonemaster schem ?
Started by jerrydyer |
4 Replies
4909 Views |
by HotBluePlates |
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Setting bias using amp head bias probe
Started by frank57 |
5 Replies
5106 Views |
by stratele52 |
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7591 tubes
Started by ernie_jr |
10 Replies
16496 Views |
by PRR |
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Trainwreck Express vs Marshall 1987 Plexi
Started by jojokeo |
34 Replies
23073 Views |
by printer2 |
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Control Grid Reading On EL34.
Started by Gary_S |
30 Replies
16250 Views |
by Gary_S |
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26 Replies
13115 Views |
by TubeGeek |
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Very Strange Problem
Started by dscottguitars |
11 Replies
5026 Views |
by PRR |
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Gibson Thor output impedance
Started by Tiny_Daddy |
3 Replies
3339 Views |
by HotBluePlates |
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preamp tube testing chassis
Started by Quatro |
7 Replies
6059 Views |
by SoundmasterG |
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50/60 cycles - difference in tone?
Started by Quatro |
5 Replies
8067 Views |
by HotBluePlates |
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double decked layout boards ?
Started by tubenit |
7 Replies
4186 Views |
by SoundmasterG |
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6.3V lamp current
Started by spacelabstudio |
7 Replies
4292 Views |
by tubeswell |
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filter caps question
Started by dude |
5 Replies
3308 Views |
by dude |
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2x Speaker Cab switch
Started by moonbird |
3 Replies
3472 Views |
by moonbird |
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Princeton Reverb Clone Preamp Bias
Started by plexi50 |
8 Replies
4895 Views |
by HotBluePlates |
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Powercon
Started by spacelabstudio |
1 Replies
2742 Views |
by HotBluePlates |
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51 Replies
14149 Views |
by embotone |
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Stand Alone JCM800 Preamp Help Please
Started by ncusack |
1 Replies
3817 Views |
by SILVERGUN |
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44 Replies
18003 Views |
by SILVERGUN |
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51 Replies
16197 Views |
by SleepLess |
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6v6 ppp output tranny
Started by ernie_jr |
6 Replies
4695 Views |
by stratele52 |
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Tweed Tone Control Simulation
Started by printer2 |
0 Replies
3465 Views |
by printer2 |
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Pilot/heater delay when powering up
Started by Mars-Hall |
4 Replies
3270 Views |
by PRR |
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10 Replies
4263 Views |
by Willabe |
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TREMOLUX AB763 speaker load ?
Started by Colas LeGrippa |
13 Replies
8198 Views |
by Colas LeGrippa |
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71 Replies
20799 Views |
by worth |
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Lower V1 bypass cap value increases hum?
Started by schoolie |
18 Replies
10293 Views |
by tubenit |
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Sovtek 5Y3
Started by labb |
18 Replies
8679 Views |
by jeff |
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Hi.
Started by musicman3858 |
13 Replies
5666 Views |
by Willabe |
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39 Replies
13812 Views |
by Gary_S |
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2 Replies
3470 Views |
by HotBluePlates |
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2 Replies
3644 Views |
by kagliostro |
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11 Replies
11716 Views |
by carausius |
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JCM800 6550 issue
Started by newtube |
7 Replies
6593 Views |
by PRR |
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Model x what are they good for?
Started by rafe |
7 Replies
4830 Views |
by rafe |
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5E3 Volume Tone mod
Started by printer2 |
6 Replies
4535 Views |
by printer2 |
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New pre-build pics...eye candy
Started by SILVERGUN |
25 Replies
8496 Views |
by SILVERGUN |
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6 Replies
5562 Views |
by carausius |
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9 Replies
5030 Views |
by jeff |
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