Specifications
OPERATION MANUAL  MODEL : ZMA - ZEN MYSTERY AMP!  REV 1 MAR 2014 
Unpacking Continued: 
Once you have the amplifier setting right side up in a location where it can be 
tested, make sure it has come to room temperature before doing anything else. 
This is especially important in cold climates. Cold steel will condensate in a warm 
house and this is a high voltage amplifier so wait until the steel is room 
temperature before installing tubes or the power cord. This can take up to 24 
hours in extreme cases. 
!
Getting Started 
First let’s get familiar with layout of the amplifier. Your amplifier will look like this: 
The important thing to notice about your amplifier is that it is actually TWO mono 
amplifiers that are laid out symmetrically in a mirror image pattern from an 
imaginary centerline between the IEC plug for the power cord and the volume 
control. In other words, everything on the left side of the amp is repeated in a 
mirror image on the right side of the amp. From this view, the left side of the amp 
is typically used for the left channel and the right side, the right channel.!
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