1、DURABLE MATERIAL: Home power amplifier with aluminum alloy frosting process, compact and exquisite, strong anti interference. 2、HIGH BASS ADJUSTMENT: Home sound power amplifier with high bass adjustment function, control the sound you want as you wish. 3、BLUETOOTH CHIP: Digital sound power amp with Bluetooth 5.1 chip, stable performance, fast transmission speed, no lag within 10m/32.8ft. 4、STRONG COMPATIBILITY: Power amplifier compatibility is strong, cell phones, computers, televisions, CDs, PADs, etc. can be used as a source of sound input. 5、SMALL AND CONVENIENT: Sound power amplifier small size and light weight, when using will not occupy too much space, high powered convenient and more practical. Item Type: Power Amplifier Material: Aluminium Alloy Input Interface: AUX BT Output Interface: Binding Post THD+N<0.05% and 1KHz A wt SNR: 85dB at 1KHz A wt Frequency Response: ±3dB (20Hz to 20KHz) High Bass Adjustable Range: treble ±7dB; bass ±7dB Output Power: 45Wx2 and 4Ω,THD+N<10%,DC=19V 25Wx2 and 8Ω,THD+N<10%,DC=19V 75Wx2 and 4Ω,THD+N<10%,DC=24V 40Wx2 and 8Ω,THD+N<10%,DC=24V Conversion Efficiency>90% Adaptable Impedance: 4Ω to 16Ω BT Transmission Distance: 10m/32.8ft Bluetooth AC6951C: SBC, AAC 1 x Power Amplifier 1 x Power Cord 1 x Adapter 1 x Instruction Manual 1 x Receiver Stick