{"product_id":"ha-4-ampli-casque-4-entrees-et-volumes","title":"Rockboard HA 4","description":"\u003ch2\u003eHeadphone Amplifier\u003c\/h2\u003e\u003cp\u003eThe RockBoard HA 4 is a compact headphone amplifier designed to distribute a stereo signal to four headphones with professional sound quality. Each output has an independent amplifier and volume control, making it ideal for studios, rehearsals, or stage applications where multiple musicians need to simultaneously monitor the main mix. Its robustness and compactness make it easy to transport and set up, offering personalized and precise listening for each user, whether in a home studio or a collective session.\u003c\/p\u003e\u003cul class=\"checklist\" style=\"list-style:none;padding-left:0;margin:12px 0 0 0;\"\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003eStereo audio distribution to 4 distinct headphones\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003eIndividual volume control for each output\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003eCompatible with all types of headphones\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003eRobust construction in a compact metal housing\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003eOptimal sound quality at all volume levels\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"color:#16a34a;font-weight:700;margin-right:6px\"\u003e✓\u003c\/span\u003e12V DC power supply included, low power consumption\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3 class=\"tech-table-title\"\u003eTechnical Data\u003c\/h3\u003e\u003ctable class=\"tech-table\"\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eNumber of Headphone Outputs\u003c\/th\u003e\n\n\u003ctd\u003e4 stereo outputs\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eVolume Control\u003c\/th\u003e\n\n\u003ctd\u003eSeparate for each channel\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eInput Type\u003c\/th\u003e\n\n\u003ctd\u003e1 x 6.35 mm (1\/4'') TRS jack\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eOutput Types\u003c\/th\u003e\n\n\u003ctd\u003e4 x 6.35 mm (1\/4'') TRS stereo jacks\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eSignal-to-Noise Ratio (SNR)\u003c\/th\u003e\n\n\u003ctd\u003e82 dB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTotal Harmonic Distortion (THD)\u003c\/th\u003e\n\n\u003ctd\u003e0.009 %\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFrequency Response\u003c\/th\u003e\n\n\u003ctd\u003e+1 dB \/ -2 dB @ 20 Hz - 22 kHz\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGain\u003c\/th\u003e\n\n\u003ctd\u003e20 dBu\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\n\u003ctd\u003e12V DC \/ 40 mA, 2.1 x 5.5 mm negative center plug (included)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eDimensions (L x W x H)\u003c\/th\u003e\n\n\u003ctd\u003e102 x 58 x 45 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eWeight\u003c\/th\u003e\n\n\u003ctd\u003e182 g\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eHousing\u003c\/th\u003e\n\n\u003ctd\u003eRobust metal\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3 class=\"specs-title\"\u003eUses \u0026amp; Advantages\u003c\/h3\u003e\u003cul class=\"usage-advantages\" style=\"margin:8px 0 0 18px;\"\u003e\n\n\u003cli\u003eAllows four musicians to simultaneously monitor a mix during rehearsals\u003c\/li\u003e\n\n\u003cli\u003eIdeal for studio recordings with personalized audio distribution\u003c\/li\u003e\n\n\u003cli\u003eCompact and robust, easy to transport for live applications\u003c\/li\u003e\n\n\u003cli\u003eIndividual volume control for customized listening on each headphone\u003c\/li\u003e\n\n\u003cli\u003eCompatible with all types of headphones, from simple to professional models\u003c\/li\u003e\n\n\u003cli\u003eEnsures clear and precise sound quality at all levels\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"RockBoard","offers":[{"title":"Default Title","offer_id":57323478909305,"sku":"RBO-E-HA-4","price":19.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0912\/9856\/2425\/files\/RBO-E-HA-4.jpg?v=1779536665","url":"https:\/\/musique-shop.de\/en\/products\/ha-4-ampli-casque-4-entrees-et-volumes","provider":"Musique Shop","version":"1.0","type":"link"}