{"product_id":"w9y-tml-ha204p","title":"ROLLS HA204P Portable Battery\/AC Operated Headphone Amplifier","description":"\u003cp\u003eFull frequency response, four channel headphone monitoring device designed for the recording studio, or other professional applications. Each output boasts a whopping 20 dB of clean channel gain. * Stereo 1\/8-in and Dual RCA Inputs * Rotary Volume controls * AC adapter included * 15-35k Hz frequency response * Lots of output level.... it’s loud! * 9V battery Operated * Input Impedance: 47k Ohms * Max Input Level: +13 dBV adapter, +8 dBV Battery * Input Connectors: TRS Stereo 1\/8-in, Dual RCA * Outputs: 4 - TRS Stereo 1\/8-in (3.5mm) * Output Impedance: 10 Ohms each output * Max Gain: 20 dB\/Channel * S\/N Ratio: \u0026gt;90 dB * THD: \u0026lt;.008% * IMD (SMPTE): \u0026lt;.008% * Nominal Current Draw: 30 Mills Min.\/ 400 Mills Max. * Expected Battery Life: 8 Hours Continous use * Frequency Response: 15-35K Hz. * Recommended Headphone Impedance: 16 to 500 Ohms. * Power: 15 VDC (Rolls Model PS27s) * Weight: .85 lb * Size: 4.5-in x 1.125-in x 4.5-in\u003c\/p\u003e","brand":"THUNDERBALL MARKETING LLC","offers":[{"title":"Default Title","offer_id":47821310820566,"sku":"W9Y-TML-HA204P","price":165.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/7065\/7238\/files\/816zcveuwOL.jpg?v=1771223388","url":"https:\/\/www.electroharmony.com\/products\/w9y-tml-ha204p","provider":"ElectroHarmony","version":"1.0","type":"link"}