Features and Functions:The HB 410 II 8A is 10-Channels DSP with 31-bands EQ and integrated 8-Channels Class-AB Amplifier. It has 4-Channels High-Level inputs and 10-Channels RCA outputs, plus 2-Channels RCA inputs. We also add a quality HD Bluetooth for music streaming and the Music Player function to be activated via USB memory. With the optional Remote you can also control the main and subwoofer volume, select Presets and input Source, and switch to previous or next song with the Music Player, directly from your dashboard.Technical Specifications: DSP Channels: 10 High Level Inputs: 4-Channels RCA Inputs: 2-Channels RCA Outputs: 10-Channels RMS Power (4Ω): 8 x 23W RMS Power (2Ω): 8 x 35W MAX Power: 8 x 70W Amplifier: Class AB BT Streaming: Yes (ext. module) Music Player: Yes (App) DSP Tools: PC and APP DSP Equalizer: 31-Bands Input Choice: Aux, BT, Hi-Lev, Aux, BT, Hi-Lev, Player, OTG I/O Mixing Matrix: Yes Crossover Type: Butterw., Bessel, Linkwitz-Riley Crossover Slope: 6 ~ 48 dB/Oct. Freq. Response: 20Hz - 20KHz S/N Ratio: > 100dB THD: < 0.05% Supply Voltage: 12V -14.4V Input Impedance: 20 KOhm (Low) 22 Ohm (High) Signal I/O Range: RCA Input 6Vpp RCA Output 3Vpp High-Lev. 12Vpp Power Supply Cons: DC 9V-16V < 0.1W Unit Dim. (mm): 190 (L) 126 (W) 45.5 (H) Remote Dim. (mm): 90 (L) x 45 (H)