Signal I/O Connections - Mapletree Line 2CRM User Manual

replace the fuse. If the fuse blows, you should not try to operate the unit. Contact
Mapletree Audio Design for information

Signal I/O Connections____ __

The signal input/output jacks are located on the rear panel of the preamplifier chassis.
RCA jacks are provided for three line inputs and two line outputs. The outputs can be
used for bi-amp operation, connection to a headphone amp, or to the front channel inputs
to a home theatre (HT) system. Left channel jacks are at the top and right channel jacks
are at the bottom. The line input impedance is 100kwith standard 10 dB gainwhich
provides minimal loading of any line source such as DAC, CD/DVD player, tape deck,
tuner, or PC sound card. The output impedance is less than 500  which is suitable for
connection to a power amplifier(s) through cables up to 10 ft in length.
The heater voltage switch located next to the power input jack accommodates either
12SN7GT (supplied) or 6SN7GTB tubes in your Line 2C. While it will do no damage to
switch to 6SN7 position with 12SN7 tubes installed, operation in the 12SN7 position
with 6SN7 tubes may damage the tubes.
4