Technical information

STEP 7: Installing the preamp tube sockets
Locate (3) 9 PIN MINIATURE SOCKETS WITH SHEILD (NOTE: 4 if using an additional tube for a mod),
(8) #4 – 3/8” MACHINE SCREWS and NUTS and the PREAMP SOCKET HOLE COVER.
Install (3) 9 pin sockets as shown, taking note to orient the
space between pin 1 and pin 9 so that it faces the front of
the chassis. Consequently, pin 4 will point almost directly
towards the rear.
The socket sits flush on top of the chassis and is mounted
using (2) #4 – 3/8” screws and nuts. The hardware
sequence:
SCREW – SOCKET – CHASSIS - NUT
Tighten with a Philips screwdriver and ¼” nut driver.
We have included an extra preamp socket hole on the chassis to accommodate mods, a second
channel, a tube driven effects loop etc. A stock 2203 circuit uses only three preamp tubes, so we
include a metal cover for the fourth hole. If you are building the kit stock, install the cover with (2) #4
– 3/8” screws and nuts, as shown.