This product is based on many years of R&D experience and the current professional technology to ensure the high performance cost ratio. The high efficiency soft switch makes the product light weight and reliable, compact, easy to operate. Protections includes clip/limit protection, thermal protection, over-load protection. It is equipped with power switch, CH1/2, volume control, clip LED, signal LED, power LED, protection LED. Rear panel: TRS connector, speak-on/binding-post output, parallel/bridge/stereo mode switch, sensitivity switch, etc.