I purchased this item 3-4 years ago and used it for two years, but I'm selling it due to a move. 【Usage】 I connected it to used speakers and this amplifier, and listened to music via Bluetooth. 【Condition】 The main unit and power adapter have been tested and confirmed to be working. There is a thin scratch on the top of the main unit (see photo 18). As the scratch is not very noticeable, I've marked the item as having no significant scratches or stains. All accessories and the original box are included. 【Details】 AIYIMA A03 TPA3116 Subwoofer Amplifier QCC304X Bluetooth 5.2 HiFi TPA3116D2 2.1 Channel Digital Audio Amplifier 50W * 2 + 100W Supports AAC SBC, aptX, aptX-LL, APTX-HD 24v Power Adapter with Volume Control