Preamps and Effects

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[dmeek]

• NAD - Harmony L3500? - weird time period / anybody know this thing? by dmeek
  [June 19, 2025, 05:53:06 PM]
• Some new relays to play with by saturated
  [June 14, 2025, 02:50:13 PM]
• 1986 Marshall 100 Lead Mosfet Troubleshooting by g1
  [June 12, 2025, 10:48:00 AM]
• Looking for full schematics of Randall RH100/RH200 and Peavey XXL by Tassieviking
  [June 12, 2025, 10:41:20 AM]
• Need schematic for Kay 761 combo by dmeek
  [June 09, 2025, 09:48:21 PM]

Noisy EFF board from a Roland JC-120G

Started by Phil_Pop

Replies: 1
Views: 8,746

April 16, 2019, 01:58:30 PM
by joecool85

noisy preamp

Started by cbg Rick

Replies: 6
Views: 11,765

February 16, 2019, 10:50:58 AM
by cbg Rick

Aion lab series l5

Started by swt

Replies: 7
Views: 12,041

January 15, 2019, 09:09:43 PM
by swt

Strange pedal issue

Started by flester

Replies: 8
Views: 13,195

November 11, 2018, 06:02:11 AM
by flester

Nice: op-amp swap on Yamaha FX-500 processor.

Started by Kaz Kylheku

Replies: 5
Views: 14,397

October 15, 2018, 09:34:40 AM
by 66cccfff

Seized pots on a Marshall Guvnor Mk 1

Started by psafloyd

Replies: 6
Views: 13,073

August 14, 2018, 01:14:03 PM
by psafloyd

Chorus Pedal Help

Started by jammy5152

Replies: 3
Views: 9,431

June 30, 2018, 06:08:45 PM
by jammy5152

DOD 490 Phasor Pedal Schematic

Started by jammy5152

Replies: 0
Views: 8,248

June 26, 2018, 09:33:27 AM
by jammy5152

Increasing power supply to ROG's Umble - any harm?

Started by Aleksandar

Replies: 3
Views: 10,314

May 06, 2018, 01:40:12 AM
by Loudthud

Confusion about Brian Wampler’s modified MXR Distortion Plus

Started by SurreyNick

Pages1 2

Replies: 16
Views: 24,177

March 18, 2018, 11:28:59 AM
by SurreyNick

Fixing an Re-201 Roland Space Echo

Started by dropanchor812

Replies: 4
Views: 12,482

February 11, 2018, 06:27:46 AM
by phatt

Fet version of the JCM800

Started by KMG

Pages1 2 3 ... 5

Replies: 63
Views: 138,973

January 09, 2018, 01:33:18 PM
by Katoda

Active pickupa

Started by flester

Replies: 3
Views: 11,538

January 07, 2018, 03:44:45 PM
by flester

Designing that OP-Amp OR15-soundalike

Started by BluesBerto

Replies: 6
Views: 12,420

November 02, 2017, 11:15:53 PM
by Loudthud

Compressor Mods

Started by phatt

Pages1 2 3

Replies: 32
Views: 42,826

October 18, 2017, 01:36:27 AM
by tarahall

Need help with ROG: fetzer valve (gain stage) + buffer

Started by Alexius II

Pages1 2

Replies: 29
Views: 49,081

September 19, 2017, 02:03:31 AM
by tpb03

Using vintage carbon comp. resistors in effect circuits.

Started by LJN

Replies: 9
Views: 17,110

March 28, 2017, 06:48:42 PM
by Retrovert

How do you design an op-amp integrator for tremolo?

Started by sa230e

Replies: 1
Views: 8,653

March 21, 2017, 01:15:19 PM
by Loudthud

Help adding Effects Send and Return Loop, need a schematic (example)

Started by smackoj

Replies: 5
Views: 10,564

March 17, 2017, 09:16:55 AM
by smackoj

Project27 adding reverb and overdrive/distortion

Started by bbmf

Replies: 4
Views: 10,850

February 18, 2017, 01:56:39 AM
by tarahall