5
10
On/Bypass Selector
– Selects between true bypass and whichever channel has
been selected by the Channel button.
11
On/Bypass Status Indicator
– When lit, it indicates that the Twin Tube Classic is
engaged and operational. When dark, it indicates that the unit is in bypass mode and
that the guitar signal is passing straight through unaltered.
Explanation of Controls
Back Panel
1
Input Jack
– Plug your guitar in here.
2
Output Jack
– Provides the output signal. Connect to the input of a guitar amp,
power amp or other device here.
3
Power Jack
– This is where you connect the provided wall-mounted power supply
(“wall wart”) to the Twin Tube Classic. Note: it is a 16 VAC/600mA unit.
Do not try
to substitute a DC power supply or another AC supply with a different
voltage value or current rating
. If you lose your transformer or if it breaks,
contact an authorized Seymour Duncan dealer for a replacement. As an alternative,
for North America and Japan, you can order a 16 VAC/600mA transformer from
Digi-Key (www.digikey.com). The part numbers for each common voltage are as
follows:
1. North America: 120 Volt/60Hz – Digi-Key part # MT7123-ND
2. Europe and Asia: 230 Volt/50Hz – Seymour Duncan part # 352301-230 (no
known off-the-shelf replacements available)
3. Japan Only: 100 Volt/50Hz – Digi-Key part # MT7127-ND (note: this transformer
is rated by the manufacturer as 20 Volt/450mA output with 120 Volt input, but will
produce the proper output voltage and current when coupled to a 100 Volt mains
supply)
2
1
3