Koch Studiotone - Handbuch (Seite 4)

E N G L I S H
Thank you for choosing the STUDIOTONE from KOCH. You now own a "state-of-the-art" all-tube guitar amplifier of the highest
quality. The STUDIOTONE has been designed and built by people who - from their own experience as musicians - take guitar
sound and quality very seriously. That is why this product was designed and built with the utmost care in order to meet all
professional standards. Our goal was not only to design an amp which sounds fantastic and is easy to operate, but also to build
it in such a way that it will serve you loyally for many years to come.
Please take your time to read this manual carefully before you switch on the STUDIOTONE and also please fill in the warranty
card and mail it. Thanks and lots of succes with your new STUDIOTONE !
CAUTION:
* BEFORE PUTTING INTO OPERATION READ THESE OPERATING INSTRUCTIONS
CAREFULLY.
* NO USER SERVICEABLE PARTS INSIDE.
* REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
WARNING:
* TO REDUCE THE RISKS OF ELECTRICAL SHOCK, DO NOT REMOVE THE
COVER.
* TO REDUCE THE RISK OF FIRE OR SHOCK HAZARD, DO NOT EXPOSE
AMPLIFIER TO RAIN OR MOISTURE.
* THIS APPARATUS MUST BE EARTHED.
* TUBES ARE HOT. DO NOT TOUCH DURING OPERATION.
STUDIOTONE FRONT PANEL
[1] INPUT: Input for all types of instruments, e.g. guitars
with single-coil, humbucker or active pickups.
[2] CHANNELS SWITCH: Selects the Clean, OD /
Overdrive or the OD+ / Overdrive-Boost channel, if no
external channel switch (e.g. the optional FS2-ST
footpedal) is connected to the ‘Remote Channel Switch’
jack [3] on the rear panel.
[3] H/M/L SWITCH: Selects High, Medium or Low
gain in the OD+ channel.
[4] VOLUME: Controls the volume level of the Clean
channel.
[5] GAIN: Controls the amount of distortion in the OD /
Overdrive and in the OD+ / Overdrive-Boost channel.
Accurate pre and post shaping circuitry prevent the low end
from getting muddy even at the highest settings.
NOTE: High gain settings (GAIN knob over “5” in the
OD+ channel) may cause squealing and/or excessive
hum and noise, due to microphonic guitar pick-ups
and insufficient screening of guitar-circuitry.
[6] VOLUME: Controls the volume level of the OD /
Overdrive and the OD+ / Overdrive-Boost channel.
[7] BASS, MID & TREBLE: Classic (post-distortion)
passive tone controls for all three channels.
[8] VOICING SWITCHES:
MID SHIFT: Shifts the operating frequency of the Treble
control from the standard frequency of 2 KHz (“0”) down to
800Hz (“+”), thus creating a very natural and musically
sounding boost in the middle frequencies.
BRIGHT: With this 3-position switch a filter can be activated
that cuts (“-“) or boosts (“+”) the high frequencies. In the
middle position (“0”) the filter is off.
[9] REVERB: Controls the amount of the Spring Reverb
signal mixed with the original dry signal.
[10] STANDBY SWITCH: Allows the STUDIOTONE to be
placed in Standby (green LED off) or Active (green LED on)
mode. In Standby mode the tubes remain hot, but the
amplifier is not operational.
The green LED monitors the internal HT power supply for
the tubes. If the amp is switched from the Active to the
Standby mode, the green LED slowly dims indicating that
the HT power supply slowly loses power. The
STUDIOTONE remains (partly) operational until the LED is
completely off.
[11] POWER SWITCH: Turns AC power On (red LED on)
and Off (red LED off). When the switch is Off the amplifier
is completely shut down.
NOTE: When switching the amplifier On, leave the Standby
switch [9] in the “Off” position for 5-10 seconds thus
allowing the tubes to heat up before switching to the Active
mode.