... H circuit, output low distortion, low noise, high power, wide frequency response, high reliable, offer user ... Model HD-12HD-10HD-8HD-6HD-4HD-3RATED POWER(W)2×8Ω120010008006004003002×4Ω1800150012009006004508Ω BRIDGE360030002400180012009004Ω ... OVERLOAD, DC, SHORTCIRCUIT, OVERHEAT, SOFTSTARTCONTROL FRONT PANEL: POWER SWITCH/CHA CHB VOLUME REAR PANEL: MODE/SENSTIVITY/LIMIT/LOW ...