Tech 21 Boost D.L.A. d Owner's Manual page 3

MIX
100% analog circuit. Adjusts ratio of direct and delayed signal.The Tech 21 Mix control
sweeps from 100% dry to 100% wet (while most delays provide a max 50/50 mix ratio via a
level control).You have more flexibility when running through a parallel effects loop without
annoying phase cancellation, and to make the delayed signal louder than the direct signal for
special effect.
FLUTTER
Introduces modulation which adds a slight shimmering/chorus-like effect of a vintage tape
echo. At minimum (7 o'clock), there is no effect. At maximum, there will be a drastic shifting
of the pitch, which can be used for extreme
special effects.
LEVEL / BOOST
100% analog circuit. Adjusts the overall output level. Increasing from unity gain (12 o'clock)
provides additional boost, up to 9dB.
Level tip: If you have a 100% wet signal going through a parallel effects loop, use the Level
to adjust the mix of dry and effected signal.
Buffered bypass eliminates the shortcomings associated with "true bypass" (pops and clicks,
and high-end loss when multiple pedals are connected together), as well as signal loss associ-
ated with other types of switching circuits.
TRAILS
Works in conjunction with Bypass and is particularly useful when Feedback is set at 11
o'clock or higher.The up position (off) = standard operating mode. Engaging Trails causes the
delay signal to gradually and smoothly diminish for up to 5 seconds when you go into bypass
mode, rather than stopping abruptly. Once you go into bypass, the guitar signal is no longer
fed into the delay circuitry and allowed to decay naturally. Note: If desired, you can lengthen
the Trail time for more than 5 seconds simply by holding the Bypass footswitch down until
you want it to stop.
PLACEMENT NOTES
The general rule of thumb with time-based effects, is to place them last in the signal chain.
Here are some points to consider:
1) Into an amp's effects loop. Gives the cleanest, most true representation of the effect
because it is after the amp's tone shaping, compression and distortion. It's the closest way to
replicate how delays are used in recording studios.
2) In front of an amp.The amp's tone, compression and distortion will all change how a
delay sounds.The amp will distort, brighten and raise the level of the Boost D.L.A., which
will give you more of a '70s sound. For a more natural sound, reduce the Mix, Feedback and
Tone controls as needed.
3) After an amp emulator (such as a SansAmp) or distortion pedal into an amp.
Set your amp completely clean to achieve similar results to running through an effects loop.
BYPASS
NOTEWORTHY NOTES
1) Interaction with your other gear. You may need to use radically different settings for
each individual way you use it. Do not be discouraged or suspect something is wrong with the
unit. If you've got your sound, you've simply found the right balance to complement each indi-
vidual type of gear.
2) When recording through a studio mixer, set the Boost D.L.A. at 100% wet. Use the
AUX send/return of the mixer and use the effects knob on the mixer channel to bring in
the desired amount of delay.
3) Stereo imaging for a '70s jazz chorus sound. With, for instance, two Tech 21
Trademark 60 combo amps, plug your guitar into one amp, use the Effects Send to the
Boost D.L.A. set at 100% wet, a short delay and Flutter at 12 o'clock.Then run the Boost
D.L.A. to the Effects Return of the second amp.
4) The Boost D.L.A. is very responsive. Our controls are unusually sensitive and tend
to perform beyond what would be considered "normal."
5) LED indicator light. When battery runs low, the LED becomes noticeably dim. Power
consumption is 50mA.With a fresh battery, you can expect approx. 10 hours of continuous
use --more than enough for a full gig.To conserve battery life, unplug unit during breaks and
other times when not in use.We recommend opting for a power supply (Tech 21 Model
#DC2 or equivalent), as it is environmentally-friendlier, will ensure operation, save money, and
relieve stress trying to remember when you last changed the battery.