Welcome To the Hoffman Amplifiers ForumApril 27, 2026, 06:32:56 pm | ||
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Valco tonemaster schem ?
Started by jerrydyer |
4 Replies
5269 Views |
by HotBluePlates |
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Setting bias using amp head bias probe
Started by frank57 |
5 Replies
5433 Views |
by stratele52 |
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7591 tubes
Started by ernie_jr |
10 Replies
17036 Views |
by PRR |
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Trainwreck Express vs Marshall 1987 Plexi
Started by jojokeo |
34 Replies
24041 Views |
by printer2 |
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Control Grid Reading On EL34.
Started by Gary_S |
30 Replies
17234 Views |
by Gary_S |
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26 Replies
13935 Views |
by TubeGeek |
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Very Strange Problem
Started by dscottguitars |
11 Replies
5467 Views |
by PRR |
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Gibson Thor output impedance
Started by Tiny_Daddy |
3 Replies
3658 Views |
by HotBluePlates |
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preamp tube testing chassis
Started by Quatro |
7 Replies
6515 Views |
by SoundmasterG |
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50/60 cycles - difference in tone?
Started by Quatro |
5 Replies
8667 Views |
by HotBluePlates |
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double decked layout boards ?
Started by tubenit |
7 Replies
4528 Views |
by SoundmasterG |
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6.3V lamp current
Started by spacelabstudio |
7 Replies
4587 Views |
by tubeswell |
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filter caps question
Started by dude |
5 Replies
3687 Views |
by dude |
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2x Speaker Cab switch
Started by moonbird |
3 Replies
3803 Views |
by moonbird |
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Princeton Reverb Clone Preamp Bias
Started by plexi50 |
8 Replies
5276 Views |
by HotBluePlates |
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Powercon
Started by spacelabstudio |
1 Replies
3038 Views |
by HotBluePlates |
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51 Replies
15184 Views |
by embotone |
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Stand Alone JCM800 Preamp Help Please
Started by ncusack |
1 Replies
4135 Views |
by SILVERGUN |
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44 Replies
19004 Views |
by SILVERGUN |
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51 Replies
17558 Views |
by SleepLess |
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6v6 ppp output tranny
Started by ernie_jr |
6 Replies
5014 Views |
by stratele52 |
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Tweed Tone Control Simulation
Started by printer2 |
0 Replies
4097 Views |
by printer2 |
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Pilot/heater delay when powering up
Started by Mars-Hall |
4 Replies
3602 Views |
by PRR |
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10 Replies
4606 Views |
by Willabe |
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TREMOLUX AB763 speaker load ?
Started by Colas LeGrippa |
13 Replies
8683 Views |
by Colas LeGrippa |
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71 Replies
22511 Views |
by worth |
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Lower V1 bypass cap value increases hum?
Started by schoolie |
18 Replies
11054 Views |
by tubenit |
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Sovtek 5Y3
Started by labb |
18 Replies
9212 Views |
by jeff |
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Hi.
Started by musicman3858 |
13 Replies
6073 Views |
by Willabe |
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39 Replies
14976 Views |
by Gary_S |
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2 Replies
3777 Views |
by HotBluePlates |
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2 Replies
3949 Views |
by kagliostro |
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11 Replies
12280 Views |
by carausius |
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JCM800 6550 issue
Started by newtube |
7 Replies
7064 Views |
by PRR |
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Model x what are they good for?
Started by rafe |
7 Replies
5103 Views |
by rafe |
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5E3 Volume Tone mod
Started by printer2 |
6 Replies
4903 Views |
by printer2 |
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New pre-build pics...eye candy
Started by SILVERGUN |
25 Replies
9070 Views |
by SILVERGUN |
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6 Replies
6001 Views |
by carausius |
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9 Replies
5389 Views |
by jeff |
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1955 Fender Super Amp
Started by plexi50 |
15 Replies
10275 Views |
by HotBluePlates |
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SE AMP build idea ?
Started by Colas LeGrippa |
17 Replies
6821 Views |
by Colas LeGrippa |
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8 Replies
4769 Views |
by Colas LeGrippa |
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14 Replies
8468 Views |
by slidincharlie |
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5 Replies
4355 Views |
by PRR |
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Volume spike
Started by jeff |
3 Replies
3918 Views |
by SILVERGUN |
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Marshall OP transformer issue
Started by newtube |
11 Replies
7469 Views |
by newtube |
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headphone line out on a tube amp
Started by gtrbryan |
5 Replies
3907 Views |
by alerich |
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Pot value ?
Started by Stankfut |
3 Replies
3242 Views |
by Stankfut |
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Ot hole spacing
Started by Stankfut |
3 Replies
3360 Views |
by Stankfut |
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el84 schedule 40 to 6v6 ?
Started by john_t |
8 Replies
4376 Views |
by john_t |
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