{"product_id":"mackie-hm-400-hm-400-4-channel-headphone-amplifier","title":"Mackie HM-400 HM-400 4-Channel Headphone Amplifier","description":"The Mackie HM-400 is a rack-mountable, 4-channel headphone amplifier designed to provide versatile headphone amplification for artists, musicians, and engineers monitoring through headphones in live stage applications and home, project, commercial, and mobile-recording studios. It features a stereo main output via XLR and 1\/4\" jacks and twelve 1\/4\" TRS stereo headphone outputs—three per channel—fed by a customizable blend of inputs.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eOne stereo main input via XLR and 1\/4\" jacks can be mixed with a per-channel 1\/4\" stereo aux input. Each channel offers 2-band EQ for quick tone shaping, stereo balance or main\/aux input mix control, and output level adjustments. Also on each channel are switches for muting left and\/or right signals and operating in stereo or mono. 7-segment LED meters display main input and per-channel output levels.","brand":"Mackie","offers":[{"title":"Default Title","offer_id":49397158740245,"sku":"KMCHM400U","price":310.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/HM-400-U.jpg?v=1759814482","url":"https:\/\/unitedsupplycorp.com\/products\/mackie-hm-400-hm-400-4-channel-headphone-amplifier","provider":"United Supply Corp.","version":"1.0","type":"link"}