Power: 2.1 interface 8-25V DC power supply
Audio input: CSR8635 Bluetooth chip, Bluetooth V4.0(stereo input various versions of the bluetooth connection)
Output Impedance: 8Ω(Best), 4/6/8/16Ω impedance can drive speakers
Output Power: Add pre-5532 output foot (powered 25V,6Ω impedance output 25W+25W, 8Ω impedance output 2x40W dual-channel)
The sound quality is very good, big power.
DIP switches can be adjusted directly after the amp gain more respect and better promote greater damping horn