BRT
This switches the ‘bright’ high shelf filter in and out of operation, with down (towards
‘BRT’) being the ‘on’ position for the switch. Use this to brighten up humbuckers, or just
for that bit of extra bite.
POWERING
BATTERY
The MK3 comes standard with a 9V battery, and with its approximate 12 mA of current
draw, can operate for 30 hours or more from a standard alkaline cell.
Changing the 9V battery first requires the removal of the four back corner screws of the
pedal. The battery clip is attached to the inside of the back plate – gently pull the back
plate off so as not to strain the connecting wires between the battery clip and the main
circuit board. After replacing the battery, carefully place any slack in the connecting
wires into the box cavity, and replace the back plate with the four screws, taking care not
to pinch the connecting wires.
Note: the LED’s are not accurate indicators of battery strength, so if the battery has not been
changed for a while and the clean boost or overdrive either sounds ‘different’ or doesn’t work
at all, try swapping out for a new battery.
9V ADAPTER
Any standard regulated 9V DC negative pin AC adapter for effect pedals can be used to
power the J-Drive MK3. The insertion of the AC adapter plug automatically removes the
internal battery from the circuit, but if you’re planning to permanently power using an
external adapter, it is recommended that the battery be removed.
PRESETS
The MK3’s combination of gain and tonal controls gives many tonal possibilities. As a
starting point, here are a few of our favorite presets:
LIGHT DRIVE
Drive: 7 o’clock
Warmth: 10 o’clock
Volume: 1:30 o’clock
BRT: ON
Gain (optional, provides an interesting tonality change): noon
CRUNCHY ON THE OUTSIDE, SMOOTH ON THE INSIDE
Drive: 2 o’clock
Warmth: 1 o’clock
Volume: 12:30 o’clock
BRT: OFF
!
J-Drive MK3 user manual v1.02
!
4
