Voltz Pedal Power Pack Specifications

*Utilizes standard 9V alkaline battery (not included), which will provide a life
span of approx. 70 hours. NOTE: Input jack activates battery.To conserve
energy, unplug when not in use. Power Consumption: approx. 7mA.
*USE DC POWER SUPPLY ONLY! Failure to do so may damage the
unit and void warranty. DC Power Supply Specifications:
-9V DC regulated or unregulated, 100mA minimum;
-2.1mm female plug, center negative (-).
Optional factory power supply is available:Tech 21 Model #DC2.
* Attempting to repair unit is not recommended and may void warranty.
* Missing or altered serial numbers automatically void warranty. For your own
protection: be sure serial number labels on the unit’s back plate and exterior
box are intact, and return your warranty registration card.
REQUIRED. Manufacturer warrants unit to be free from defects in materials
and workmanship for one (1) year from date of purchase to the original purchaser and is not transferable.This warranty does not include damage resulting
from accident, misuse, abuse, alteration, or incorrect current or voltage. If unit
becomes defective within warranty period, manufacturer will repair or replace
it free of charge.After expiration, manufacturer will repair defective unit for a fee.
ALL REPAIRS for residents of U.S. and Canada: Call Tech 21 for Return
Authorization Number. Manufacturer will not accept packages without
prior authorization, pre-paid freight (UPS preferred) and proper insurance.
Contact Tech 21 on normal business weekdays from 9:00 AM to 5:00 PM, EST.
T: 973-777-6996 • F: 973-777-9899
E: info@tech21nyc.com • www.tech21nyc.com
©2008 Tech 21 USA, Inc.
Tech 21 was formed by a guitarist possessing the unusual combination of a trained ear and electronics expertise. In 1989, B. Andrew Barta incorporated Tech 21 and made his invention commercially available to players and studios around the world. His highly-acclaimed SansAmp™ pioneered Tube Amplifier Emulation in professional applications for recording direct and performing
live, and created an entirely new category of signal processing.There have since been many entries
into this niche, yet SansAmp continues to maintain its reputation as the industry standard.
In addition to a full line of SansAmp models,Tech 21 also offers effect pedals; battery operable
MIDI footcontrollers, the MIDI Mouse and MIDI Moose; as well as “traditional” style amplifiers for
guitar and bass. Each product is thoughtfully and respectfully designed by B. Andrew Barta himself
with the player in mind.
Tech 21’s goal is to provide you with flexible, versatile tools to cultivate, control, refine and redefine your own individual sound.We take great pride in delivering consistent quality sound, studio to
studio, club to club, arena to arena.
SansAmp Programmable Bass Driver DI and SansAmp Bass Driver Deluxe combine the warmth of
a 100% analog signal path with the convenience of digital programmability in a super simple, player-friendly stomp box format. Our proprietary technology captures the rich, natural harmonics
and sweet overdrive characteristics inherent to tube amplifiers, and does so even at low volume.
SansAmp delivers the same dynamics, responsiveness, and sound quality of massive pro stage rigs
in a portable, programmable pedal.
The ease of operation allows you to make changes on the fly, at the gig, even during your performance --without having to take this manual with you.There are no complex formulas or
numerical calculations to learn, so there’s nothing to get in the way of your creative flow.
Independent footswitches put your favorite tones right at your feet, from warm vintage to Sumosized overdrive. Custom actuators provide a smooth transition between channels for instantaneous switching, so you can dance to the music instead of your gear.
WITH BASS AMP: Run the 1/4” output of the SansAmp directly into the input of the
power amp input, a.k.a. “effects return” (if applicable), of an amp.This will bypass the tone coloring
section of the pre-amp and will defeat the amp’s master volume.
amp. Then slowly increase the volume of the bass. If it’s too loud overall, check that the 1/4” Out
Boost switch is disengaged (up) and then edit your presets accordingly. If it doesn’t get loud
enough for you, engage (depress) the 1/4” Out Boost switch to add 10dB.
Or, you can run the SansAmp into the front input of an amp. Be sure to keep the Level of
SansAmp close to unity gain, so as not to overload the amp’s input, which could result in undesirable distortion.
Tips for setting up your amp when using front input:
1. Plug into low gain channel or input.
2. Turn off Bright switch.
3. Turn presence control (if applicable) to 12 o’clock or below.
4. Set tone controls as flat as possible.
TO DRIVE A POWER AMP: Run the output of the SansAmp into the input of a power
amp with an input sensitivity of -10dB to 0dB.Then use the master volume control of the power
amp to adjust your stage volume.
TO RECORD DIRECT: You can plug directly into the input of a mixer/recorder and use
the on-board sounds of the SansAmp. Bear in mind, full-range systems yield a wide frequency
response.Therefore, you may need to adjust the EQ settings of the SansAmp to compensate.
Standard Audio Procedure:TURN (SansAmp) ON FIRST.TURN OFF LAST. To avoid
unwanted and potentially speaker-damaging “pops” when connecting or disconnecting any equipment, always mute mixing board and/or turn down amp volume before plugging or unplugging!
DO NOT run the speaker output of any amp directly into the SansAmp. Severe damage to the amp and/or SansAmp may result.
SansAmp Bass Driver is designed to accommodate instrument level signals to the Input, such as
the output of a bass, the output of distortion pedals, etc. Signal level to Input should be close to
that of a standard electric guitar (approx. -10dB / 250mV). NOTE: Hot pickups will increase the
gain structure of the SansAmp Bass Driver.
[Deluxe] IN A (MAIN): 1/4-inch 1 megOhm, instrument level. Use as your main input when
using a single instrument. Also switches battery power on/off.To avoid battery drain, unplug when
unit is not in use.
[Deluxe] IN B: 1/4-inch 1 megOhm, instrument level. For second instrument.
[Deluxe] PARALLEL OUTPUT: 1/4-inch buffered, unbalanced direct output. Instrument
signal passes through, UNeffectd, to the input of your stage amplification system or tuner.
1/4” INPUT: 1 megOhm, instrument level. Also switches battery power on/off.To avoid battery drain, unplug when unit is not in use.
BALANCED XLR OUTPUT: Balanced 600-Ohm low Z output. Sends effected or
bypassed signal to mixing console/recorder.
XLR Out Pad Switch: -20dB pad to match the output to equipment with
different input level requirements. In the line level (up) position, the output
is 0dB. In the instrument level (down) position, the output is -20dB.
1/4” OUTPUT: Unbalanced 1KOhm low Z output. Sends effected or
bypassed signal to amp rig or power amp.
1/4” Out Boost Switch: +10dB boost to match the output to equipment
with different input level requirements. In the instrument level (up) position,
the nominal output is -10dB. In the line level (down) position, the output is 0dB.
Allows you to “tap into” the power of a suitably equipped mixer. As the 3-conductor XLR sends
the audio signal to the input of a mixer, the mixer sends voltage back to the unit via the same 3
wires, eliminating the need for an external power supply. Consult your mixer’s owner’s manual for
set-up instructions. For live and studio use, let the engineer know your SansAmp is phantom
power operable.
NOTE: Minimum 24V DC regulated phantom power supply, however, 48V DC regulated is recommended to optimize headroom and illuminate LEDs.
PHANTOM & GROUND CONNECT SWITCH: When engaged (depressed), the
ground connects and unit will accept phantom power through the XLR Output. Disengaged (up),
the ground of your stage system and other interconnected gear is lifted/isolated from the ground
of the mixing console.
With a mixer only: If you are plugging your bass into the Bass Driver and taking the XLR
Output to a mixer --and do not have any other grounded equipment connected in the
setup-- you will have to engage (depress) the switch to connect the ground and activate the
phantom power.
With a mixer and bass amp: If you are going to the mixer via the XLR and using the 1/4”
Output to feed a bass amp (with its own AC ground), you should set the switch in the up position
for “Ground Lift” mode. If you experience hum and/or buzz with the switch in either position,
there is probably a problem with the AC outlets you are plugging into.
SansAmp Bass Driver can go into bypass mode from any of the three channels.Whichever channel
you’re already in, hit that channel’s footswitch once and you’ll be in bypass mode.
NOTE: If using vintage equipment without proper grounds, take extra care connecting it to
modern grounded equipment.The inadequacies of the ground in vintage gear could result in damaging anything it is connected to.
NOTE: While operating under phantom power, we recommend keeping a 9V alkaline battery
installed at all times to avoid the previously mentioned “pops” when lifting the ground (see
Standard Audio Procedure on page 2).
PRESENCE brings out the upper harmonic content and attack. For a smoother high end and
for clean settings, decrease to taste.
DRIVE adjusts the overall amount of gain and overdrive, similar to when the output section of a
tube amp is being pushed.
BASS & TREBLE. Unlike passive controls that only cut, these active tone controls cut or
boost ±12dB from unity gain (12 o’clock).This powerful EQ section effectively reduces the need
for a fixed frequency mid control and enables you to achieve an extensive variety of curves -including a “mid-cut” as well as a “mid-boost.”
Adjusting Mid-Range Content: The mid-range level is preset. Boosting Bass and Treble yields
a “mid-cut” (at 750 Hz) where the relative mid-range level is lower than the Bass and Treble frequency levels. Cutting Bass and Treble yields a “mid-boost” (at 750 Hz) where the relative midrange level is higher than the Bass and Treble frequency levels. NOTE: The overall output level will
change relative to the EQ settings. Simply adjust the Level control accordingly.
BLEND allows you to blend the direct instrument signal with SansAmp Tube Amplifier
Emulation circuitry. In most cases, you will probably have this set at maximum (100% SansAmp).
For certain applications, however, such as an ultra-transparent sound or for use with piezo pickupequipped instruments, you may want to blend-in some of the direct signal to achieve your desired
sound.While the SansAmp Tube Amplifier Emulation circuitry is bypassed when Blend is at minimum, the Bass, Treble and Level controls remain active.
LEVEL adjusts the output level of both the 1/4” and XLR outputs.
Select a channel where you want the setting located. Set the knob controls to taste. Double click
on that channel’s footswitch and it’s saved. It’s that easy.
You can program 3 presets per bank for a total of 6 presets.You can utilize 3 per instrument or
all 6 for one bass. Just follow the same save procedure for each channel in each bank..When you
alternate between banks via the foot-switch, the corresponding LED lights up to let you know
which bank you’re in.
Allows you to connect and control external effects. Run the input of your effect to FX SEND;
output of your effect to FX RETURN.We recommend time-based effects (i.e., chorus or delay) be
inserted in the Effect Loop and external distortion/wah pedals be placed between the bass and
the SansAmp.
To engage/disengage the effect loop, double-click the Bank/FX footswitch.
NOTE: The effect loop automatically stores the position of the last state it is in. For example, if
the effect loop is on when you save a program, it will engage when you recall that preset. If you
should spontaneously disengage the effect loop during a performance, the next time you recall
that preset, the effect loop will be off.
Built-in speaker simulation is an integral part of the SansAmp circuitry. It shapes the sound to
match the particular cabinet of the amp type selected. It is specifically designed for a smooth, even
response as would be achieved by a multiply-miked cabinet, without the peaks, valleys, and notches associated with single miking.Therefore, it will not adversely affect or interfere with the sound
of your own speaker cabinet.
One of the key attributes of any SansAmp is its responsiveness to the dynamics and nuances of
your playing technique. In most cases, your bass should be plugged directly into the SansAmp.We
suggest experimenting to find the order that’s best for you. As a general guide, we recommend:
Place the following effects BEFORE the SansAmp Bass Driver:
Wah-Wah, Pre-Amp, Compressor, Fuzz Box, Envelope Follower.
Place the following effects AFTER SansAmp Bass Driver:
Chorus, Delay, EQ, Pitch Shifter, Reverb.
NOTE: Low quality digital effects placed after the SansAmp may compromise your signal and
degrade the sound.
When you turn a knob from its stored position, it “unlocks” and the channel indicator LED will
blink.The slower the blink, the farther away you are from the preset point.The faster the blink,
the closer you are. At the preset point, the LED stops blinking and remains on.
1) Do not A/B (compare) the SansAmp in line with a digital product. When linked in
series with a digital pre-amp/processor, the A/D to D/A conversion will impact the unit’s sound.
For an accurate comparison, run them parallel (separately) and manually plug in and out of each.
2) SansAmp is very responsive. Our controls are unusually sensitive and powerful.You need
not set everything at max to get maximum results. For instance, to brighten your sound, rather
than automatically boosting Treble all the way up, try cutting back on the Bass first.
Another Tech 21 first, this is a unique safety feature engineered for the Drive and Level controls.
When you “unlock” the EQ settings, for instance, they will “jump” to the new setting of the knob
position. For the Drive and Level controls, however, this could result in you jumping out of your
skin if they are at a high setting.With the Lazy Pot, there’s a slow, gradual increase to the new setting position giving you time to turn it down.This will only happen when you initially unlock a preset. Once unlocked, the pot will react according to how you reposition it.
The tone controls also help compensate for the EQ curves found in bass amps.To find the best
settings for interacting with your amp, start with the tone controls at 12 o’clock and cut or boost
as necessary. Be aware that amplifiers vary greatly and some may require you to use radical EQ
settings on the SansAmp to achieve your desired sound.You need not be discouraged or suspect
something is wrong with the unit. If you’ve got your sound, you’ve simply found the right balance
for your particular amp.
3) The noise level of SansAmp is exceptionally low. However, it may amplify noise emanating from the input source.To minimize noise going into the SansAmp Bass Driver, we recommend
active electronic instruments have the volume set at unity gain/maximum and tone controls positioned flat. If you need to boost, do so slowly and sparingly.
Also check for pickup interference by moving your guitar or turning the volume off. Be aware single coil pickups are more likely to generate noise.
4) Preset and Sample Setting levels and tones will vary depending on the bass, amp and
cabinet you use.They were determined using a “typical” bass and cabinet, and are provided as a
starting point. So, some adjustments may be necessary, particularly to the Level control. For
instance, if you have a high output bass, a clean setting will be louder than a distorted one.
Conversely, a low output bass will require a higher level for a clean setting. If you have a big cabinet, the Fat Tube setting will be louder.With a smaller cabinet, the Flip Top setting will be louder.
5) REMEMBER THIS WARNING: DO NOT run the speaker output of any amp
directly into the SansAmp. Severe damage to the amp and/or SansAmp may result.
To reset your unit back to factory specifications, you can simply reprogram each of the Sample
(1) Fat Tube
(2) Flip Top
(3) Distorted Bass
[Bank B] (4) Slap
(5) SVT®-style
(6) Crimson-style
Or you can perform the following procedure: Hold down the footswitches for Channels 1 and 3
while simultaneously applying power (either plugging in an adapter or, if a battery is installed, plugging in your guitar cable).Then release the switches.