{"product_id":"presonus-hd9-hp4pack-four-person-headphone-monitoring-bundle","title":"PreSonus HD9\/HP4PACK Four-Person Headphone Monitoring Bundle","description":"\u003cp\u003eThe PreSonus HD9\/HP4PACK is a studio headphone-monitoring bundle built for sessions where up to four people need to hear the same source. It combines one HP4 four-channel headphone distribution amplifier with four HD9 closed-back monitoring headphones. This setup helps musicians, producers, podcasters, and recording guests monitor together without relying on a single headphone output.\u003c\/p\u003e\u003cp\u003eThe HP4 accepts a stereo line-level source from compatible mixers, audio interfaces, and playback devices with 1\/4-inch TRS outputs. Four front-panel headphone outputs provide separately adjustable listening levels, so each user can set a comfortable volume. Rear monitor\/thru outputs also allow the incoming source to feed studio monitors or another HP4.\u003c\/p\u003e\u003cp\u003eEach included HD9 headphone uses a closed-back, circumaural design to help reduce outside distractions and minimize headphone bleed during recording. Its 45 mm dynamic neodymium drivers are designed for detailed monitoring with extended low-frequency reach. The 10 Hz to 26 kHz frequency response supports tracking, editing, and mix-reference work.\u003c\/p\u003e\u003cp\u003eThe HD9 design includes a precision-tuned acoustic chamber, 40-ohm rated impedance, and up to 900 mW of power handling per channel. Two-way earcup rotation and an adjustable headband support flexible positioning at a workstation or console. Long-lasting ear pads and a single-sided cable help keep the headphones practical for repeated studio use.\u003c\/p\u003e\u003cp\u003eFor control-room workflows, the HP4 includes a monitor-level control, monitor mute switch, and mono switch. The mono function sums the left and right input signals to both sides of the headphone and monitor outputs. Its monitor\/thru outputs can also connect to another HP4 when a larger headphone-distribution setup is needed.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Person Monitoring:\u003c\/strong\u003e Includes one HP4 amplifier and four HD9 headphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent Headphone Levels:\u003c\/strong\u003e Each HP4 headphone output has its own volume control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed-Back HD9 Design:\u003c\/strong\u003e Helps reduce outside noise and headphone bleed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45 mm Neodymium Drivers:\u003c\/strong\u003e Delivers extended-range dynamic headphone monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono and Monitor Controls:\u003c\/strong\u003e Supports mono checking, monitor level adjustment, and muting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonitor\/Thru Outputs:\u003c\/strong\u003e Feed studio monitors or another HP4 distribution amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe HP4 uses a compact desktop format with front-panel headphone jacks and level controls for direct access during sessions. The HD9 headphones use closed-back circumaural earcups, 45 mm neodymium drivers, an adjustable headband, and rotating earcups. Each HD9 has a straight, single-sided 3 m cable terminated in a 3.5 mm stereo connector.\u003c\/p\u003e\u003cp\u003eConnect the left and right line outputs of a mixer or audio interface to the HP4's balanced 1\/4-inch TRS inputs. Plug the included HD9 headphones into the four front-panel 1\/4-inch headphone outputs using their supplied adapters, then set each listener's level individually. Connect the rear monitor\/thru outputs to powered monitors, a power amplifier, or another HP4 as needed, and start with all volume controls turned down before raising levels.\u003c\/p\u003e","brand":"PreSonus","offers":[{"title":"Default Title","offer_id":45669175885894,"sku":"HD9\/HP4PACK","price":234.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71IwHHj1nTL.jpg?v=1784480238","url":"https:\/\/audiowatt.store\/products\/presonus-hd9-hp4pack-four-person-headphone-monitoring-bundle","provider":"Audio Watt Store","version":"1.0","type":"link"}