F-1X Mono Tube Preamp

Changing F-1X Voltage Jumper Settings (110, 220, etc.)

Started by David Houck

Replies: 1
Views: 13,194

April 21, 2026, 01:39:57 PM
by mica

Couple of easy output hacks

Started by mica

Replies: 0
Views: 12,451

May 19, 2021, 12:33:22 PM
by mica

Case screws

Started by mica

Replies: 0
Views: 12,565

August 26, 2011, 02:33:29 PM
by mica

Post output louder than pre in direct out

Started by mica

Replies: 0
Views: 12,276

May 09, 2007, 07:42:59 PM
by mica

Dating your preamp

Started by David Houck

Replies: 0
Views: 12,443

February 25, 2006, 01:06:22 PM
by David Houck

Tuner output

Started by mica

Replies: 0
Views: 12,045

May 13, 2005, 02:46:36 PM
by mica

When to Change the Tube

Started by mica

Replies: 0
Views: 13,070

February 04, 2005, 09:50:52 AM
by mica

How to Change the Tube

Started by mica

Replies: 0
Views: 12,275

February 04, 2005, 09:49:30 AM
by mica

Loss of Signal or Distortion or Hum

Started by mica

Replies: 0
Views: 12,521

February 04, 2005, 09:48:04 AM
by mica