Instruction Manual
850P Reference Dual-Mono Preamplifier 
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16 
Rear Panel Connections
Figure 3: Rear panel of MOON 850P Preamplifier 
The rear panel of the MOON 850P dual-mono 
preamplifier will look similar to Figure 3 (above).  
There are two rows of connectors; the top row 
contains single-ended RCA inputs/outputs and the 
bottom row contains balanced XLR inputs/outputs, 
as well as the three input connections from the 
separate digital controller chassis. There are three 
(3) pairs of balanced inputs on XLR connectors (B1, 
B2, B3) and four pairs (4) of single-ended inputs on 
RCA connectors (S1, S2, S3, S4). As a result of this 
preamplifier’s dual-mono design, the left channel 
inputs are located on the left side and the right 
channel inputs are locted on the right side. This 
preamplifier is also equipped with a single-ended 
monitor loop; the input and output connectors for 
each channel are located on their respective sides of 
the rear panel. The 850P has two (2) pairs each of 
balanced outputs and single-ended outputs. Both 
balanced outputs are variable; One single-ended 
output is variable and the other one is fixed, 
meaning that it bypasses the volume control. Don’t 
hesitate to use high quality interconnect cables. Poor 
quality interconnect cables can degrade the overall 
sonic performance of your system. 
Figure 4: Rear panel of MOON 850P Controller 
The rear panel of the MOON 850P controller will 
look similar to Figure 4 (above). It is equipped with 
full-function bi-directional RS-232 port control and 
status for custom integration or automation. This is 
located in the upper-middle section and uses a DB9 
connector. Immediately to the right of the RS-232 
port are two (2) “SimLink” connectors labeled “in” 
and “out” on 1/8” mini jacks. Please refer to the 
next section entitled SimLink for more details. Your 
MOON 850P preamplifier has a 1/8” mini jack input 
for use with aftermarket infrared remote control 
receivers. The “IR in” connector is located on the 
upper right section of the rear panel. Across the 
lower section you will find the 3 pairs of output 
connectors that are used for powering the 
preamplifier chassis. To the right of these 










