APHEX Servo balanced audio distribution amplifier
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Lebih Lengkap Mengenai APHEX Servo balanced audio distribution amplifier
Model 120B is a high performance audio
distribution amplifier with a single high impedance input and four low
impedance outputs, all electronically servo-balanced and designed to be
as transparent as possible. The 120's transformerless circuits are
designed for wide, flat frequency response, free from ringing or
overshoot, making it ideal for distribution of time code or audio. Each
output has its own amplifier and level control for maximum versatility
and isolation. The sturdy steel chassis may be used stand-alone or
rackmounted, singly or in pairs.
The input circuit is adjusted
for optimal common-mode rejection. Servo-balancing compensates for high
common-mode voltages, so headroom isn't sacrificed. The high input
impedance allows bridging of the input signal with minimum loading. This
way several amplifiers can be easily driven from the source.
The
individual output amplifiers are very low impedance so long lines and
capacitive loads are easily driven with no loss of stability or high
frequency response. Servo-balancing permits the outputs to be used
single-ended at any time without a change in gain by simply grounding
the unused pin. Individual output level controls are recessed for
bump-proof operation, yet can be easily adjusted without tools. The
front panel power LED also acts as a signal present and clip indicator
for the input.
Features:
-Frequency Response 5Hz - 100 kHz (+0, -0.5dB)
-Dynamic Range 94 dB
-Hum and Noise Better than -90 dBm at unity gain
-THD 0.002% @ +4dBm, 0.005% @ +20dBm
-IMD 0.002% @ +10dBm
-Channel Isolation 70dB
-Slew Rate 13 V/usec