Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 06:55:29 pm | ||
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preamp tube testing chassis
Started by Quatro |
7 Replies
5606 Views |
by SoundmasterG |
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50/60 cycles - difference in tone?
Started by Quatro |
5 Replies
7518 Views |
by HotBluePlates |
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double decked layout boards ?
Started by tubenit |
7 Replies
3809 Views |
by SoundmasterG |
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6.3V lamp current
Started by spacelabstudio |
7 Replies
4022 Views |
by tubeswell |
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filter caps question
Started by dude |
5 Replies
2972 Views |
by dude |
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2x Speaker Cab switch
Started by moonbird |
3 Replies
3121 Views |
by moonbird |
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Princeton Reverb Clone Preamp Bias
Started by plexi50 |
8 Replies
4549 Views |
by HotBluePlates |
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Powercon
Started by spacelabstudio |
1 Replies
2461 Views |
by HotBluePlates |
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51 Replies
13193 Views |
by embotone |
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Stand Alone JCM800 Preamp Help Please
Started by ncusack |
1 Replies
3494 Views |
by SILVERGUN |
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44 Replies
17105 Views |
by SILVERGUN |
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51 Replies
14989 Views |
by SleepLess |
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6v6 ppp output tranny
Started by ernie_jr |
6 Replies
4423 Views |
by stratele52 |
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Tweed Tone Control Simulation
Started by printer2 |
0 Replies
3155 Views |
by printer2 |
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Pilot/heater delay when powering up
Started by Mars-Hall |
4 Replies
2941 Views |
by PRR |
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10 Replies
3914 Views |
by Willabe |
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TREMOLUX AB763 speaker load ?
Started by Colas LeGrippa |
13 Replies
7782 Views |
by Colas LeGrippa |
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71 Replies
19526 Views |
by worth |
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Lower V1 bypass cap value increases hum?
Started by schoolie |
18 Replies
9702 Views |
by tubenit |
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Sovtek 5Y3
Started by labb |
18 Replies
8208 Views |
by jeff |
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Hi.
Started by musicman3858 |
13 Replies
5293 Views |
by Willabe |
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39 Replies
12889 Views |
by Gary_S |
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2 Replies
3212 Views |
by HotBluePlates |
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2 Replies
3372 Views |
by kagliostro |
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11 Replies
11190 Views |
by carausius |
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JCM800 6550 issue
Started by newtube |
7 Replies
6162 Views |
by PRR |
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Model x what are they good for?
Started by rafe |
7 Replies
4550 Views |
by rafe |
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5E3 Volume Tone mod
Started by printer2 |
6 Replies
4232 Views |
by printer2 |
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New pre-build pics...eye candy
Started by SILVERGUN |
25 Replies
8057 Views |
by SILVERGUN |
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6 Replies
5212 Views |
by carausius |
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9 Replies
4729 Views |
by jeff |
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1955 Fender Super Amp
Started by plexi50 |
15 Replies
9449 Views |
by HotBluePlates |
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SE AMP build idea ?
Started by Colas LeGrippa |
17 Replies
5995 Views |
by Colas LeGrippa |
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8 Replies
4085 Views |
by Colas LeGrippa |
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14 Replies
7562 Views |
by slidincharlie |
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5 Replies
3725 Views |
by PRR |
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Volume spike
Started by jeff |
3 Replies
3200 Views |
by SILVERGUN |
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Marshall OP transformer issue
Started by newtube |
11 Replies
6542 Views |
by newtube |
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headphone line out on a tube amp
Started by gtrbryan |
5 Replies
3257 Views |
by alerich |
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Pot value ?
Started by Stankfut |
3 Replies
2684 Views |
by Stankfut |
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Ot hole spacing
Started by Stankfut |
3 Replies
2704 Views |
by Stankfut |
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el84 schedule 40 to 6v6 ?
Started by john_t |
8 Replies
3793 Views |
by john_t |
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Smaller caps, bigger choke?
Started by schoolie |
11 Replies
5640 Views |
by HotBluePlates |
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Help with jolida mod
Started by Trall |
7 Replies
4978 Views |
by HotBluePlates |
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5 Replies
3895 Views |
by SILVERGUN |
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Two rectifiers
Started by Leevi |
17 Replies
5980 Views |
by kagliostro |
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9 Replies
7077 Views |
by kagliostro |
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Low output on tmb ef86
Started by Bugman3183 |
19 Replies
6886 Views |
by Bugman3183 |
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Princeton Reverb
Started by plexi50 |
6 Replies
3906 Views |
by plexi50 |
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PPIMV issue? UPDATED.
Started by TweeDLX |
17 Replies
7154 Views |
by crashtm1 |
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