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GENERAL NOTES 

 
Although the 

Rock 

is very ruggedly housed in heavy gauge steel, 

care should be given to the unit as tubes are made from glass. 
Avoid physical abuse. A soft touch to the footswitch is all that is 
needed to switch the unit. You will notice the absence of a power 
switch on the Rock. This was intentional on the part of the de-
signer. There is no possibility of unwanted power loss during a 
performance, and power switches are just one more area of 
eventual wear- out that has to be avoided. The Rock has been 
designed for prolonged periods of continuous use without over-
heating or damage. It has been observed that the REAL TUBE 
sound is actually enhanced with use as the tube ages. 
 
 
 

SPECIFICATIONS 

VOLTAGE REQUIREMENT  

: 120 VAC, 9 WATTS 

TUBE TYPE 

:12AX7/ECC83-SELECTED 

INPUT IMPEDANCE 

:1 MEG. OHMS  

SIN RATIO 

:70 dB (Typical) 

DRIVE SENSITIVITY 

-65dBV (.043Mv)  

HUM & NOISE 

:-85 dB (Typical) 

OUTPUT HAPEDANCE  

:10K OHMS (Typical) 

OUTPUT LEVEL 

:0 dBV (.78 V Typical) 

WEIGHT 

:3 lbs. shipping 

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