Harman not available User Manual

Since the 2-Series Equalizers consume a relatively small amount of power, the 
units may be left on continuously.

Power Cord Receptacle
Connects AC power to the equalizer.

Output Connectors
Two types of output connectors are provided for output connections: male XLR type
connectors, and 1/4" tip-ring-sleeve phone jack connectors.

Input Connectors
Two types of input connectors are provided for input connections: female locking XLR
type connectors, and 1/4" tip-ring-sleeve phone jack connectors. The maximum input
level that the equalizer can accept is typically +22 dBu (ref: 0.775Vrms).

Hookups and Cabling: The 2-Series Equalizers are designed for nominal +4 dBu levels. 
The equalizers can be used with either balanced or unbalanced sources, and the out-
puts can be used with either balanced or unbalanced loads, provided the proper cabling 
is used.