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The LUNCHBOX 

Acoustic

 is ZT’s first two-channel amp, with perfect features and tone 

for the acoustic musician and vocalist. Featuring specially voiced, independent Instrument 
and Microphone channels, flexible signal I/O, and high-output capability, the easily portable 
LUNCHBOX 

Acoustic

 is truly a performer’s best friend.

Like all ZT products, The LUNCHBOX

 Acoustic

 is simple and intuitive enough to allow anyone 

to plug and play without much effort. However, reading this document can help you get the most 
from your amp, and deliver the best to your audience. 

Design Philosophy:

The LUNCHBOX 

Acoustic

 is built on the platform of ZT’s original LUNCHBOX amp. By utilizing 

proprietary technology and taking a fresh approach to design, ZT has created another powerful 
tool for the performing musician, this time with sound and features specifically suited for acoustic 
instrument players and vocalists.

ZT products are the result of many years of study into the sound, feel and science of the world’s 
best musical instrument amplifiers. Our goal was not to clone or “model” any particular product. 
Rather, we have tried to understand, in a methodical way, what technical factors give an amp 
great tone, flexibility and playability. As a group of experienced audio scientists and passionate 
musicians, we set out to learn what makes a classic amp survive for generations, giving artists 
of many styles and genres a consistently great playing experience over the years. ZT’s research 
investigation was “clean slate.” We didn’t assume we knew any secret, magic formula; we set  
our own techno-biases aside. Likewise, we did not assume that conventional wisdom is always 
all that wise.

What we found is that guitar amps are fantastically complex systems. Many aspects of the  
overall product design interact with one another under real-world playing conditions. Sections 
of the electrical circuit influence each other, the electrical system interacts with the acoustical 
system, etc. Some of these interactions are well known to amp aficionados and designers.  
Others have been underrated, or overlooked entirely. Thus, we soon came to realize that guitar 
amps have plenty of mysteries to reveal, and plenty of room for improvement in areas that 
musicians would appreciate.

Eventually, ZT started collecting real, practical insight into what makes great amps tick.

In our view, optimization between electrical, acoustical and mechanical subsystems is the 
key to bringing more tone, power, smaller size, and lower costs into the picture. By applying 
sophisticated technical understanding to overcome limitations that have previously been 
considered facts of life, ZT is able to re-write some of the rules while working in complete  
harmony with more traditional approaches. We believe it is time to re-think the fundamental  
design of the guitar amp, bringing in advanced audio technology without losing the wonderful 
benefits of proven classics.

Summary of Contents for LBA1

Page 1: ...Owner s Manual ZT Amplifiers LBA1...

Page 2: ...4 CLEANING Unplug this product from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 15 NON USE PERIODS This amplifier should be unplugged f...

Page 3: ...AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION FOR CONTINUED PROTECTION AGAINST FIRE REPLACE ONLY WITH SAME TYPE 250V FUSE Acoustic Vocal Amplifier LBA1 Adjusts the Reverb level Adjusts level of...

Page 4: ...ons giving artists of many styles and genres a consistently great playing experience over the years ZT s research investigation was clean slate We didn t assume we knew any secret magic formula we set...

Page 5: ...nels with the stereo AUX INPUT 1 8 jack on rear panel and routes them to the buffered EFX loop The EFX SEND can be used as a DI or Line output without interrupting the LUNCHBOX Acoustic s internal sig...

Page 6: ...nel In most cases these controls should be set high up generally above the 50 point of their ranges This will assure a good tone and low operating noise Of course you might have to adjust the GAIN con...

Page 7: ...ls and the output volume on your player We recommend that you disconnect any cables from the AUX INPUT when it is not in use EFX Loop Allows effects to be inserted after the input stage resulting in a...

Page 8: ...rols all set at midpoint and the VOLUME all the way down Then inch up the VOLUME step by step Season to taste Because of the high available gain some acoustic instruments may tend to feedback if the G...

Page 9: ...which we believe results in specifications that are both conservative and useful The internal speaker of the LUNCHBOX Acoustic is nominally 8 with a DC resistance of 5 3 Electrically the amplifier ou...

Page 10: ...t 200 watts greater than 130dB 1 meter 3 3 Voltage Switchable 115V 230V Controls Top Panel Dual Channel Volume Gain Bass Treble Reverb Master Volume Feedback Cut Rear Panel Line Out Headphone Level Sp...

Page 11: ...com to explain the defect and to obtain an RMA number return materials authorization number then return the complete product in original packaging if available to an Authorized ZT Amplifiers Service...

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