Specifications

CONNECTING AN UNBALANCED SOURCE
Although the inputs are all of the 3 pin type, an unbalanced source
is easily accommodated by using a special cable. This cable has an RCA
phono type connector on the source end and a 3 pin connector for going
to an input on the 2010 Preamplifier.
The minus input (pin 3) should be wired to ground only at the RCA
phono connector. This brings the minus input reference of the 2010 to the
unbalanced source ground, thus reducing ground loops.
Another option for accommodating unbalanced sources is that of
the Boulder ABL2 input adapter. It converts a balanced input into a
RCA phono input right at the rear of the 2010. Like the above cable, the
minus input of the 2010 is connected to the ground of the RCA phono.
However, this minus side will then share the shield wire with the chassis
ground and will not have the best hum rejection.
GETTING
STARTED
1-6
UNBALANCED INPUT CABLE
3-NEG INPUT
2-POS INPUT
1-GROUND