The TPA6120A2 is a high fidelity audio amplifier built on a current-feedback architecture. This high bandwidth, extremely low noise device is ideal for high performance equipment. The better than 120dB of dynamic range exceeds the capabilities of the human ear, ensuring that nothing audible is lost due to the amplifier. The solid design and performance of the TPA6120A2 ensures that music, not the amplifier, is heard. 1: 2 way with the switch input circuit (3.5 headphone holder and gold-plated RCA) Replace the input signal is no longer needed to pull line to toggle the panel selector switch. 2: High-precision voltage divider circuit Ensure the stability of the circuit and reduce the output DC drift. 3: Advanced input and output connections Block Guarantee the signal path was smooth and durable. 4: audio channels all use the U.S. military regulations DALE fever resistance Low noise, good sound quality. Deficiencies: the price is 20-100 times than the normal resistance. 5: distribution in Japan PSE certification power Low ripple, radiation, and durable. 6: 6.35mm headphone output socket Additional 6.35 to 3.5 Docking Station for the use of HI FI headphones. 7: aluminum pull profiling oxidation process of shell and solid aluminum knob Noble, beautiful and with a shield, solid aluminum knobs feel good. Technical Specifications: Standard input interface: 3.5mm/RCA, stereo input (with switch) Standard output interface: 6.35mm headphone Block Case Color: Black Panel color: black Input Level: 400mv to 2V Output power: 150mw / 250Ohm, 300mW / 120Ohm, 1000mw / 32Ohm Machine size: 126mm x 74mm x 30mm (including protruding parts) Package weight: 500G Configure the list: sAp II of x 1 units, DC24V Japan PSE certification power x 1