4 independent stereo high-power headphone amp/line distribution channels Single-rack package Easy-to-operate unit allows maximum variety of monitoring & stereo line level signal distribution options Input source select switches & phone & line 1/4|| TRS stereo outputs on each channel 4 independent stereo input sections (each with servo-balanced L/R 1/4|| TRS jacks) enable independent selection of any of the 4 stereo signals for each headphone amp/line distribution channel Selection of up to 4 completely independent monitor signals for each set of headphones connected to the HPA-4 allows optimum monitoring flexibility or 4 separate choices for each channel=92s line output enabling many audio switching/routing solutions Separate volume control for each channel adjusts the level to both phone & parallel line outputs Easily expandable for optimum versatility in any application=97up to 4 HPA-4s can be daisy-chained for additional fully selectable headphone/line distribution requirements No-compromise circuit design, tight-tolerance components & low-noise, extremely linear amps for reference-quality, transparent audio with maximum headroom even at extremely high headphone volume levels High-quality, rugged construction for maximum reliability Shielded internal dual regulated power supply with 115V (60Hz)/230V (50Hz) select switch & fused IEC power cord connector
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