Audio Note M8 RIAA - Manual (Page 9)

3
XLR MALE
OUTPUT
1
2
3
RCA
OUTPUT
SOCKET
BALANCED /
SINGLE ENDED
SWITCH
Balanced The M8 RIAA is equipped with custom designed and manufactured
output transformers, which employ an improved output and grounding
scheme to provide the best possible connection to the following
amplifier.
Below is a description of the various cable and connection options: -
The pin configuration for all Audio Note (UK)
XLR / BALANCED connections is as follows: -
PIN 1 Ground / Shield
PIN 2 Positive / Send
PIN 3 Negative / Return
The balanced and single ended outputs cannot be used
simultaneously; select the appropriate output using the toggle switch.
When using an amplifier with a true balanced input, the
‘BALANCED / SINGLE ENDED’ switch may be set in either position.
When set to the ‘BALANCED’ position, the centre tap of the output
transformer secondary is connected to the preamplifier’s ground.
When set in the ‘SINGLE ENDED’ position, the secondary ‘floats’ in
relation to the preamplifier ground. This provides the option of either a
low or high common mode impedance to ground at the preamplifier
output. Experiment with both positions to achieve the lowest
background hum from the system.
CONNECTION continued…