LD Systems HPA 4 Headphone Amplifier 4 Channel Stereo 1/4" TRS Jack RCA Output
Input Connectors: 2 x RCA, 6,3 mm Phone Jack Stereo. Output Connectors: 4 x 6,3 mm Phone Jack Stereo. Minimum Load per Channel: 10 ohms. Output Power: 4 x 100 mW. PA & Live Sound. Input Impedance: 1 kohm.