bluetooth amplifier module,bluetooth audio amplifier,bluetooth stereo amplifier board bluetooth wireless audio module, bluetooth amplifier module ,bluetooth speaker board,bluetooth audio board, application: ... +EDR compliant 2. Typical +2dBm Class 2 output power 3. Receiver Sensitivity: GFSK typical -90dBm, π/4 PSK typical -90dBm, 8DPSK ... circuit for Li-ion battery 12 built in 3W stereo amplifier