Analog discrete direct energy 2Ch amplifier 100 W per Channel (6 ohms), 45 W per Channel (8 ohms) Frequency response: direct 10 hz-100 kHz, +1 dB/-3 dB Bluetooth Wireless Technology (Ver. 4.2, Profile: A2DP/AVRCP, Codec:SBC/AAC) AM/FM tuner with 40 station presets