Thermionic Culture THE PHOENIX Mastering Plus User Manual
Page 11

©Thermionic Culture Ltd, August 2011
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Input valves can be just plugged in and used with the 
zeros re-adjusted. The output valves have a more 
complex procedure and you must have access to a 
distortion analyser or an oscilloscope to correctly set 
them up. Full procedure details will be supplied if 
requested when ordering valves. 
 
4.2
Operating voltage / Fuses 
 
The Phoenix Valve Compressor is factory set to 
operate from a 230V 50/60Hz AC mains supply It can 
be set to operate from 115V AC by sliding the voltage 
selector switch on the rear panel to the ‘115V’ 
position. 
 
NOTE: If the mains supply voltage is reduced to 115V, 
then the mains fuse MUST be increased to 1.6A in 
accordance with the following table: 
 
Operating Voltage
Fuse Rating
115V
T1.6A 20mm type
230V
T800mA 20mm type
 
 
