5V 5W 2 Channel Mini Stereo Audio Amplifier CM2038 The CM2038 is a dual power audio BTL amplifier.Supply voltage of 6V, 3.5W peak Output power (5W) can be supplied to a 4Ω load with a guaranteed THD of less than 10%, or 2.2W of power for an 8Ω load. External control, low power shutdown mode and pm2038 circuit features, internal thermal protection and reduce the "ignition surge pulse" in the circuit. Technical parameters Product name: CM2038 Operating voltage range: DC 2 - 6V (recommended voltage: DC5V) Channel: 2 channels Output power: 5W + 5W  RMS power: 3.5W Output Impedance: 4 - 8 Ohm Typical shutdown current: 0.7μa Size: 50 * 45 * 25mm