JBL M712 Two Channel Gating Compressor/Limiter - $145 - (Helena, MT)
JBL M712 Two Channel Gating Compressor/Limiter in good condition Extremely soft signal paths using only two low-noise operational amplifiers and a low-noise VCA, factory trimmed to remove distortion, make the M712 transparent to the signal when the gate is open. DC control voltages are used for all functions so the audio signal does not pass through the front panel controls, but remains near the input and output jacks. Input noise is substantially reduced by balanced differential input circuits and RFI filters. All outputs are electronically servo-balanced and maintain a constant level into balanced or unbalanced loads. Features: Complete user control over Threshold, Attenuation, Attack and Release controls. Gate function with independent Threshold control for each channel. Stereo linkable. High visibility 8-element LED metering. Outstanding 115 dB dynamic range for lower noise, greater headroom, resulting in unparalleled transient response. Extremely low distortion; THD 0.03%. Wide bandwidth, flat response; 10 Hz to 50 kHz. Subsonic filtering for protection of low frequency transducers from over excursion. External ground link terminals for independent access to signal and chassis grounds, permitting greater flexibility in system grounding. XLR and 1/4 inch TRS connectors for convenient patching. Servo balanced outputs provide automatic output level adjustment to accommodate either balanced or unbalanced feeds
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From ebay.com - 1 month ago