{"product_id":"presonus-hp4-4-channel-headphone-distribution-systempresonus-hp4-4-channel-headphone-distribution-system","title":"PreSonus HP4 4 Channel Headphone Distribution System(Presonus Hp4 4 Channel Headphone Distribution System)","description":"\u003cp\u003e\u003cstrong\u003ePreSonus HP4 4 Channel Headphone Distribution System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe loudness of your headphones will vary depending on their design and their input impedance. The output impedance of the HP4 is 51 (ohms), and it will work fine with professional and consumer headphones but the volume will differ depending on which type of headphone you use.\u003c\/p\u003e\n\u003cp\u003eHeadphones with lower input impedances will generally be louder than higher-impedance headphones. (In this case, louder does not mean better!) Most professional headphones have impedances between 150 and 600. Consumer headphones for CD players and the like often have impedances between 8 and 32.\u003c\/p\u003e\n\u003cp\u003eBroadcast headphones are specialized, and you are unlikely to use them with an HP4; their impedances are typically between 1.5 k (kilohms) and 2 k.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4 screaming-loud (150 mW per channel) stereo ¼” headphone outputs (front panel)\u003c\/li\u003e\n\u003cli\u003e2 balanced ¼” line outputs (monitor outputs)\u003c\/li\u003e\n\u003cli\u003e2 balanced ¼” line inputs\u003c\/li\u003e\n\u003cli\u003eHeadphone level control for each channel\u003c\/li\u003e\n\u003cli\u003eMono summing switch for each channel\u003c\/li\u003e\n\u003cli\u003eMonitor level control\u003c\/li\u003e\n\u003cli\u003eMonitor mute switch\u003c\/li\u003e\n\u003cli\u003eDaisy-chain multiple units via monitor outputs\u003c\/li\u003e\n\u003cli\u003eCompact 1\/3U rack-mount chassis\u003c\/li\u003e\n\u003cli\u003eSealed, detented, metal rotary controls\u003c\/li\u003e\n\u003cli\u003eExternal 16 VAC power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTechnical Specs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eConnector Type \u003c\/strong\u003e\u003cbr\u003e XLR- ¼” TS, Combo, balanced\u003cbr\u003e \u003cstrong\u003eTHD+N      \u003c\/strong\u003e\u003cbr\u003e 0.0025%, 1 kHz, unity gain \u003cbr\u003e \u003cstrong\u003eMax Input Level         \u003c\/strong\u003e\u003cbr\u003e +18 dBu, \u0026lt;0.5% THD+N, unity gain \u003cbr\u003e \u003cstrong\u003eInput Impedance       \u003c\/strong\u003e\u003cbr\u003e 10 k\u003cbr\u003e \u003cstrong\u003eFrequency Response \u003c\/strong\u003e\u003cbr\u003e 20 Hz - 20 kHz, ±0.5dB\u003cbr\u003e \u003cstrong\u003eMonitor Outputs\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eConnector Type   \u003c\/strong\u003e\u003cbr\u003e ¼” TRS, asymmetrical, impedance-balanced\u003cbr\u003e \u003cstrong\u003eTHD+N      \u003c\/strong\u003e\u003cbr\u003e 0.0025%, 1 kHz, unity gain \u003cbr\u003e \u003cstrong\u003eMax Output Level       \u003c\/strong\u003e\u003cbr\u003e +18 dBu, \u0026lt;0.5% THD+N\u003cbr\u003e \u003cstrong\u003eOutput Impedance     \u003c\/strong\u003e\u003cbr\u003e 51\u003cbr\u003e \u003cstrong\u003eFrequency Response \u003c\/strong\u003e\u003cbr\u003e 20 Hz - 20 kHz, ±0.5dB \u003cbr\u003e \u003cstrong\u003eHeadphone Outputs\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eConnector Type   \u003c\/strong\u003e\u003cbr\u003e ¼” TRS, stereo\u003cbr\u003e \u003cstrong\u003eMax Output Power     \u003c\/strong\u003e\u003cbr\u003e 130 mW\/Ch., \u0026lt;0.5% THD+N, 60 load\u003cbr\u003e \u003cstrong\u003eFrequency Response \u003c\/strong\u003e\u003cbr\u003e 20 Hz - 20 kHz, ±0.5 dB, 60 load\u003cbr\u003e \u003cstrong\u003eHeadphone Impedance Working Range      \u003c\/strong\u003e\u003cbr\u003e 32 - 600\u003cbr\u003e \u003cstrong\u003ePower\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eExternal Adapter Type        \u003c\/strong\u003e\u003cbr\u003e +12 VDC, 1000 mA, center pin positive\u003cbr\u003e \u003cstrong\u003ePhysical\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eDimensions        \u003c\/strong\u003e\u003cbr\u003e 1\/3U rack-mount (with standard rack tray, not included)\u003cbr\u003e \u003cstrong\u003eHeight       \u003c\/strong\u003e\u003cbr\u003e 1.75” (44.45 mm)\u003cbr\u003e \u003cstrong\u003eDepth         \u003c\/strong\u003e\u003cbr\u003e 5.5\" (139.7 mm)\u003cbr\u003e \u003cstrong\u003eWidth         \u003c\/strong\u003e\u003cbr\u003e 5.5” (139.7 mm)\u003cbr\u003e \u003cstrong\u003eWeight      \u003c\/strong\u003e\u003cbr\u003e 5 lbs (2.27 kg)\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47520658620594,"sku":"YXZSZ 7547544862917","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7311\/2498\/files\/8daa9a1b-00e4-46fa-ae5b-8f920e91c84f.jpg?v=1779871402","url":"https:\/\/audio.cpixshop.com\/products\/presonus-hp4-4-channel-headphone-distribution-systempresonus-hp4-4-channel-headphone-distribution-system","provider":"AVL Gear Shop","version":"1.0","type":"link"}