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Functional Description
The CHP-400 is an 4-way headphone amplifier with 4 high-power heapdhone amplifiers assignable to
2 individual inputs. Dual front/rear connections and an internal wide-range power supply make this
unit suitable for a large variety of applications in recording, live sound and installation environments.
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AC inlet. Use the supplied AC cord to connect the unit to AC mains. Make sure voltage and
frequency stated and set on the unit comply with your local AC supply.
HEADPHONE REAR OUTPUTS (channel 1 to 4). These are stereo (TRS) outputs suitable to
drive headphones. While headphones down to 32 Ohms can be connected, a higher imped-
ance type (> 60 Ohms) is recommended for lower distortion at high output levels. These
outputs are in parallel to the front-side outputs (7). Note that in case headphones are
connected to both front and rear outputs, the load impedance will only be half, so headphones
must have a sufficiently high impedance.
MAIN INPUTS L and R (inputs A and B). These are balanced TRS connectors. The L input shall
be used when the source is mono, or shall be used as the left channel input when the source
is stereo. The R input shall be used for the right channel of stereo sources.
MAIN INPUTS STEREO (inputs A and B). These are unbalanced TRS input connectors, suitable
to accept a stereo headphone signal as an input.
MAIN LINK OUTPUT (input A only). This is a pair of balanced TRS output connectors, in order
to daisy-chain several units if required or to forward the input A signal to any other destination.
INPUT LEVEL CONTROLS (inputs A and B). Adjusts the input level of the signal connected via
the connectors (3) or (4).
HEADPHONE FRONT OUTPUTS. (channel 1 to 4). These are stereo 3.5mm (Mini-TRS)
outputs suitable to drive headphones. While headphones down to 32 Ohms can be connected,
a higher impedance type (> 60 Ohms) is recommended for lower distortion at high output
levels. These outputs are in parallel to the front-side outputs (2). Note that in case headphones
are connected to both front and rear outputs, the load impedance will only be half, so head-
phones must have a sufficiently high impedance.
SOURCE SELECTOR switches (channels 1 to 4). These switches determine whether the
relative output channel plays the signal of input A or input B.
OUTPUT LEVEL control (outputs 1 to 4). These controls set the outputs levels individually for
the relative output (2/7).
POWER switch. Switches the unit on and off. Make sure to switch the unit off when not in use.
POWER Indicator. Lights up when the unit is powered on.
USER MANUAL - CHP400 HEADPHONE AMP
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Summary of Contents for CHP-400
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