Acoustic Preamp
Safety instructions
Intended use
This device is intended to preamplify signals from musical instruments. Any other
use or use under other operating conditions is considered to be improper and may
result in personal injury or property damage. No liability will be assumed for dam-
ages resulting from improper use.
Risk of injury and choking hazard for children!
Children can suffocate on packaging material and small parts. Children
can injure themselves when handling the device. Never allow children
to play with the packaging material and the device. Always store pack-
aging material out of the reach of babies and small children. Always
dispose of packaging material properly when it is not in use. Never allow children
to use the device without supervision. Keep small parts away from children and
make sure that the device does not shed any small parts (such knobs) that children
could play with.
Risk of fire due to incorrect polarity
Incorrectly inserted batteries may destroy the device or the batteries. Ensure that
proper polarity is observed when inserting batteries.
Features
• Two-channel tone control with switchable mids shaping
• Reverb and chorus effect
• Headphones out
Operating elements
ö
#
4
DWELL
3
2
REVERB
1
0
1 VOLUME – volume control
2 BASS
– bass control
3 SHAPE
– attenuates mids, boosts treble and bass
4 PHASE
– phase inversion for suppressing feedback
5 TREBLE
– treble control
6 GAIN
– controls the input gain, to adopt active or passive
pick-ups
7 TUNER
– tuner output (1/4" jack)
8 CLIP
– lights green when signal is present, lights red on
overload
9 CHORUS – SPEED: controls the effect speed
DEPTH: controls the effect depth
LED: indicates whether effect is on or off
10 INPUT
– instrument input (1/4" jack)
11 LINE IN
– input for line level devices (3.5 mm mini jack)
Thomann GmbH • Hans-Thomann-Straße 1 • 96138 Burgebrach • www.thomann.de • info@thomann.de
$ % &
'
SHAPE
PHASE
ON
IN
OFF
OUT
REVERB
SPEED
DEPTH
REVERB
CHORUS
CHORUS
/
.
Quick Start Guide
This quick start guide contains important information on the safe operation of the
product. Read and follow the safety advice and instructions given. Retain the manual
for future reference. If you pass the product on to others please include this manual.
Possible damage by leaking batteries
Leaking batteries can cause permanent damage to the device.
Take batteries out of the device if it is not going to be used for a longer period.
Where to use the product
Never use the product
• in conditions of extreme temperature or humidity
• in extremely dusty or dirty areas
• at locations where the unit can become wet
General handling
• To prevent damage, never use force when handling the product.
• Never immerse the product in water. Just wipe it with a clean dry cloth. Do not use
liquid cleaners such as benzene, thinners or flammable cleaning agents.
• Line input to add AUX signals
• Tuner output
• Operation via 9 V battery or 9 V
(
)
*
+
,
-
12 D.I.
– may reduce hum caused by ground loops
13 CHORUS – turns Chorus effect on or off
14 9 V
– connector for power adapter (not supplied)
15 REVERB
– turns Reverb effect on or off
16 DI OUT
– output to connect to a mixing console (XLR)
17 PHONES – headphones out (3.5 mm mini jack)
18 REVERB
– DWELL: controls the decay of the reverb effect
REVERB: controls the amount of reverb mixed
with the dry signal
LED: indicates whether effect is on or off
19 OUTPUT – output to connect to an amplifier (1/4" jack)
power adapter (not included)
DocID: 420194_18.04.2023
EN
Need help?
Do you have a question about the Harley Benton 420194 and is the answer not in the manual?
Questions and answers