IIis a passive "output multiplier"
that can be used to distribute the output
of a professional audio mixer to the inputs
of peripheral equipment. PatchBox II is
ideal for feeding a mixer‚s output signal
into DAT recorders, digital editors, computer
sound cards, cassette and reel decks, VCRs,
PA systems, dubbing racks, limiters, and
other audio equipment. Both professional
equipment with balanced inputs and consumer
equipment with unbalanced inputs can be
is compatible with any active balanced (transformerless)
low impedance signal source that is ground-referenced.
(Most professional mixers built since the
early 1980s use this topology.)
From a stereo
source, PatchBox II creates twelve stereo
outputs: six balanced stereo outputs and
six unbalanced stereo outputs.
balanced outputs, on XLR and ¼"
TRS connectors, provide a "unity gain"
signal with a 600 ohm source impedance.
PatchBox II unbalanced outputs, on gold-plated
RCA connectors, provide a signal that is
compatible with the inputs of consumer gear.
Because the inputs circuits of audio equipment
are normally high-impedance ("bridging"),
any combination of outputs can be used simultaneously
without interaction or signal degradation.