HOW TO SET IT UP:
First off, with your amp on standby, plug in the guitar to the input jack (it has a guitar next to it), activating the battery,
and the amp to the output jack (it has a speaker). Set the levels on both gain knobs (outside knobs) anywhere up to 3:00,
and the Master anywhere you want. Step on the switches several times to equalize the voltages on the input capacitors
and eliminate popping noises during switching. Turn your amp volume to a low level to start, and try listening to the two
different channels individually and together, adjusting them slowly until you get to the levels you want. Set the Master
Volume so that your final output level with both channels active is low enough not to blow up your amp. Remember
that Channel 1 works best as the loud clean boost, and has no Master Volume when used alone. Channel 2 can actu-
ally distort by itself at any volume level using the Master to limit it’s output level. When you turn the gain knobs, it’s ok if
you hear a rushing/crackling noise. That indicates that the gain and bias of the transistor are being reset. This noise gets
more intense toward the right on each of those knobs, but does not in any way indicate anything is wrong with your unit.
COMMENTS ON THE GAIN CONTROLS:
I’ve taken a lot of flack for the SHO “crackle okay” knob’s noise, which people mistakenly interpret in many different
ways. I’ve seen reviews where the user believes that the pot is “cheap” or that it’s “old,” or “bad.” This is not the case.
The SHO uses a revolutionary approach to controlling the gain that resets the headroom, gain, and bias of the transistor
at the same time, effectively re-designing the circuit for the optimum settings at each volume level. When the knob is not
being turned, the unit makes no crackling sounds. It’s not a simple volume control. If it were, the SHO wouldn’t be so
special. The SUPER-DUPER 2-IN-1™ has this same kind of control for each channel.
IMPROVEMENTS OVER THE SUPER HARD-ON™:
This pedal has several improvements over the original SHO. The most obvious is that it’s actually 2 SHO’s in one box.
Hence the name, SUPER-DUPER 2-IN-1™. Also, you may notice that the name can be safely spoken in mixed company,
in front of young ears, and used in church. Yes, believe it or not, I get regular emails from people who can’t use or buy
an SHO because they are afraid of 1) being beaten up by their redneck friends/bar patrons/fans, 2) verbally abused by
their girlfriends/wives/moms/dads, 3) raising questions from young people or giggles, pointing, and other goofy behavior,
4) generally feeling like idiots trying to explain why their pedal has such a controversial name. To my credit, the original
name only meant to infer that the pedal is “super hard on your amplifier.” Honest. No, really, HONEST! Ok, I took my cue
from Mike Matthews Big Muff Pi, I guess. So sorry, everybody. But there are those people who think the name is it’s best
feature. Heh. Enough about that. Anyway, the SUPER-DUPER 2-IN-1™ is a name I can proudly say in front of my mom.
Until she asks, “two whats in one what?” which she will, eventually. She’s that kind of mom.
WARNING: The very high input impedance of this pedal can cause strange reactions (sometimes mildly
pleasant and/or arousing) when used with a vintage ‘junk’ (read ‘cool’) guitar. The solution is to simply
lower the ‘crackle okay’ gain knob a little or leave the guitar volume wide open. Any problems will only oc-
cur at the highest gain settings with an unusual guitar.
SPECIFICATIONS:
Uses one 9V battery (preferably alkaline, but the unit is shipped with a carbon-zinc battery.) The low current operation of
this pedal’s circuit will give you extraordinarily long battery life. Current draw is approximately 3mA with both channels
wide open. A DC power jack (standard Boss configuration with center negative) is provided on the side of the pedal. Use
a high- quality 9V adaptor for all high-gain effects!
WARRANTY:
Your Vexter Series Super Duper 2 in 1™ is warranted for 2 years from date of purchase. For ZVEX Effects warranty info
consult http://zvex.com/website/repairs.htm for information. Be sure to fill out and send in your warranty card, or email
me your registration via the website!
SERVICE:
Should your Vexter Series Super Duper 2 in 1™ ever need service, please contact ZVEX Effects via the “contact” link on
the website www.zvex.com for the most current information.
Last updated: 9.23.2010
P.O. BOX 16078 | Minneapolis, MN 55416 USA
www.zvex.com | [email protected] | [email protected]
