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D.I. LIFT / GROUND

This 2-position mini toggle offers the ability to lift the Circuit Ground from the Chassis Ground, effectively

isolating the path to Ground for the STRATEGY circuit. This can be very helpful in live sound front of house or Monitor applications
as well as in Recording environments.

LIFT isolates the Circuit to Chassis Ground, preventing these types of ground loops when interfacing to consoles.

GROUND connects the Circuit Ground to the Chassis and should be used whenever possible. Use this position at all times when you
are NOT connecting the D.I. OUTPUT to a console.

Sometimes—not always—this will help you isolate and remove unwanted hum or buzz from the equation. Remember that there are
a myriad of noises and hums that can be caused from many sources, including things beyond your control elsewhere on the AC Line
you are connected to (outside your house, studio or venue). The D.I. LIFT/GROUND switch can’t cure those other outside factors, but
it can relieve one of the more common sources of hum found when interfacing to Consoles that arises when the amplifier’s Ground
and the Console Ground create a loop.

SEND / RETURN (FX LOOP)

NOTE: To avoid any loud and potentially dangerous pops and noises, set the amp to Standby before connecting or disconnecting any

effects to the Send or Return jacks. This will prevent any potential damage to speakers, console inputs or ears.

These two ¼” jacks provide the interface for outboard effects devices and pedals and offers a way to use these processors
with the least amount of degradation to your Tone. The LOOP is a critical Tone path in the STRATEGY and is best used for
time-based effects (delay, chorus, flange, etc). Effects like overdrive, distortion, wah, envelope or compression often offer
substantial gain increase potential beyond UNITY GAIN if used at extremes. Use of these types of effects in the LOOP
can be a cause of issues ranging from microphonics, squealing, breakup, unwanted distortion or reduced headroom, just

to name a few, if UNITY GAIN is exceeded via your effect(s) output into the FX RETURN. That said, many players successfully use
compression (or for that matter, any of these devices) in the LOOP to control the dynamics there instead of between the Bass and the
INPUT, although usually very sparingly. There is no right way to apply compression (or the other effects mentioned above), so where
you place them in your signal path is up to you. Typically though, the devices mentioned above sound better and are more widely
usable when used on the “Front End” and not in the LOOP.

The FX LOOP is a junction point between the end of the preamp and the driver stage to the power section and these jacks are wired
in SERIES with the signal. This means that the entire signal goes through the LOOP. The SEND jack will feed the signal out of the
preamp without interrupting it. The RETURN jack will break the path and interrupt the signal.

When nothing is plugged in to the SEND and RETURN jacks the FX LOOP is effectively bypassed and the signal is unaffected by
any loop circuitry.

NOTE: DON’T COMPROMISE YOUR TONE! The FX LOOP is wired in SERIES with the dry signal. Use the best quality processors
and pedal effects possible in the FX LOOP to ensure a good impedance match and minimal signal degradation. Also use the best
quality (low capacitance) cable possible of the shortest length to minimize the loss of high end or punch (TONE). We suggest 1 – 3
feet of FX related cabling, at most, to preserve tonal integrity. Everything you put in your signal path affects your sound—so use the
best!

LOOP EXT. SWITCH

This jack provides the same function for the FX LOOP that the four EXT. SWITCH jacks located on the

left side of the Rear Panel do for their individual features. It is located here on the right side next to the LOOP jacks as it makes for

a cleaner internal layout and also so that if you don’t have to—or don’t want to carry—the larger optional Footswitch, you
can use a single footswitch connected here to trigger the LOOP on and off.

This jack is controlled by the same tip-to-ground latching-type logic that the other four EXT. SWITCH jacks use and
again, this logic is standard on most external master switching units. It is also a common individual Control (grounding)
Footswitch offered by many brands and of course, we offer a rugged Bud Box type that’s perfect for smaller pedal boards

INPUT

MAINS

FUSE

EXT

SWITCHING

LOOP

EXT

SWITCH

HAND BUILT

IN PETALUMA,

CALIFORNIA U.S.A.

TUBE GUIDE