{"product_id":"presonus-hp4-headphone-amplifier-with-built-in-speaker-controller","title":"PRESONUS HP4 Headphone Amplifier with Built-in Speaker Controller","description":"■Speaker controller built-in headphone amplifier overview It can supply monitor signals to four headphones and has sufficient output (150mW each). Each headphone output can be independently controlled for volume. It has low noise and a wide frequency response, so sound quality is not sacrificed. It has a control switch for the signal to the monitor speaker and a mute switch, so you can control the volume of studio monitors such as powered monitors. Features* High sound quality essential for accurate monitoring* Compact size yet can supply power to 4 headphones* Monitor speaker volume control* Monitor speaker mute* Mono signal can be monitored from both left and right headphones■Channels: 1 input, 5 outputs■Dynamic range: \u0026gt;115dB■Signal to noise ratio: \u0026gt;95dB■Headroom: +22dBu■Frequency response: 10Hz to 50kHz■Input impedance: 10kΩ■Output impedance: 51Ω■THD + noise: 0.002%■Headphone output: 150mW■Input connector: Phone, TRS■Output connector: Phone, TRS■Power requirement: 16VAC, 1000mA, 20W■Weight: Approx. 760g■Size: 14x14x4.4cm Product images include images of use. Please note that items other than those specified in the  are not included. \n\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003e","brand":"Mega Shop Japan","offers":[{"title":"Default","offer_id":49113347785024,"sku":"B08GLHHH5J","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0853\/2584\/0704\/files\/41OniLODoOL._AC_US1200.jpg?v=1718885330","url":"https:\/\/megashopjapan.com\/products\/presonus-hp4-headphone-amplifier-with-built-in-speaker-controller","provider":"Mega Shop Japan","version":"1.0","type":"link"}