Use In The Studio: The JD20 is a unique low noise
pre-amp for playing guitar direct to tape, PA, Hi-Fi,
mixers and guitar amps. It is able to replicate the
sounds of typical high quality tube amplifiers and
produce sounds from the earliest Rock and Roll tones
right up to modern day Grunge Metal... making it
ideal for all demo and project recording work. JD20's
highly accurate G12T™ Speaker Simulation means
there is no need to spend hours mic'ing up. And in
home studios, you can capture the sound of a fully
cranked guitar amp'... without waking up the
neighbours!
Live Use On Stage: Give your amp the sound it
should have had to begin with! Plug it into the input
of your guitar amp and use it as an amp sound
expander for live performances. Just hit the BYPASS
footswitch when you want to go back to your regular
amp tone. When in BYPASS mode, The JD20 does
not corrupt your straight sound... but it does beef up
the signal enabling it to drive guitar cords and
multiway snakes over 100 yards/meters long. So even
when not active as an effect JD20 can still improve
your tone.
Humbucker Emulation: Don't build a mid booster
into your valuable instrument. Use the JD20 between
your single coil pickup and amp in the normal way,
but be able to footswitch between the two tones. Set
up a pleasing clean sound and then switch in the
G12T Speaker Simulation which removes the thin
edgy high tones and adds extra bite at at around
3kHz. Simply use the BYPASS footswitch to alternate
between the two tones. A little overdrive gives the
humbucker sound 'growl'. Dial in some deep
overdrive for silky smooth mega sustain and searing
solos that cut through the band to make you really
stand out.
Use Of Effects PedaIs/Processors: Overdrive and
wah pedals should aIways be used between the guitar
and the JD20. It is best to try and connect chorus,
echo, reverb or other time delay effects between the
output of the JD20 and the input of the amplifier, PA,
recorder or Hi-Fi. Generally this produces a more
pleasing sound. However, this is not a firm rule and
you may prefer the results with all effects units
between guitar and the JD20. Don't be afraid to
experiment. Whichever sounds best to YOU is right.
When you have a good sound... you natural play well
too!
1: DIRTY (AC) THIRTY - HANKY PANKY™
2: VINTAGE “TWIN” - COUNTRY BOY
3: DRIVEN STACK - DEVILS TONE (666)™
4: HOT-RODDED STACK - MANIC METAL
SET FOOTSWITCH TO HEAVYSET FOOTSWITCH TO CRUNCH
SET FOOTSWITCH TO CRUNCH SET FOOTSWITCH TO HEAVY
Front Panel:
1. DRIVE DEPTH:Sets amount of distortion.
2. BALANCE:Sets the loudness ratio between
CLASSIC and HEAVY modes.
3. TREBLE: Adjusts the intensity of frequencies
above 1kHz.
4. MIDDLE: Adjusts the intensity of frequencies
between 200Hz and 1kHz.
5. BASS: Adjusts the intensity of frequencies below
200Hz.
6. VOLUME: Adjusts the output level.
Rear Panel
1. BYPASS: Footswitch for use during live
performance to access your guitar amp’s original
sounds.
2. CRUNCH/HEAVY: Distortion voice selector
which allows you to change between CRUNCH
& HEAVY by footswitch.
3. OUTPUT: Lo-Z to drive long cables without
tone or volume loss - even in BYPASS mode.
4. POWER INPUT: For connecting an external
power supply. Use any power supply giving a
positive or negative output between 9 & 30
volts DC. This unit is equipped with
AutoSense™ circuitry which detects the
incoming voltages and adjust itself automatically.
NO HARM CAN BE DONE BY USE OF AN
INCORRECT POWER SUPPLY, providing the
above guidelines are adhered to.
5. G12T Speaker Simulation: In/Out switch.
Enables the pre-amp to be connected to a
recorder or PA system and prevents the sound
from sounding fizzy or unnaturally thin.
6. INPUT: Hi-Z input circuitry to prevent pickup
loading effects.
2
3
3
2
2
1
1
4
4
5
5
6
6
Classic Guitar Tones Pickup selections (1=neck 2=middle 3=bridge)
5: CLAPTON - Layla (2)
6: KOSSOF - All Right Now (3)
7: HENDRIX - The Wind Cries Mary (1)
8: TOWNSEND - I Can See For Miles (3)
SET FOOTSWITCH TO CRUNCH
SET FOOTSWITCH TO CRUNCH
SET FOOTSWITCH TO CRUNCH
SET FOOTSWITCH TO CRUNCH
