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REAR PANEL CONTROLS
AC INLET The 901 accommodates a standard IEC power cable. The IEC inlet
contains a built in RFI filter.
LINE VOLTAGE SELECTOR To change the line voltage use a small screwdriver to pry
open the voltage select door. Carefully remove the voltage select cam and insert with the
desired voltage showing. Use the table below for voltage settings and fuse values.
CAM SETTING LINE VOLTAGE FUSE VALUE
110Vac 100Vac 120Vac .25A SLOW
220Vac 220Vac 230Vac 240Vac .125A SLOW
WARNING: The Model 901 is capable of delivering over .5 Amperes of
current to the headphone jack. The nature of the TRS jack allows for the ring
to be shorted to the sleeve when the plug is partially inserted. If the plug is
left partially inserted and there is a high amplitude signal on the output of the
amplifier the line fuse will blow. Always replace the line fuse with the proper
type fuse or damage to the amplifier can occur. Note that this fault condition
will not harm your headphones.
DIGITAL IN SELECTOR The digital input selector switch selects either AES or S/PDIF and
optical signals. When the switch is set in the S/PDIF/optical position either input can be
used but only one can be used at a time.