The DAP AMP-104 is a 4-channel headphone amplifier for extending four 6.3 mm jack stereo outputs with individual volume control. It has both RCA and 6.3 mm TRS jack stereo inputs, allowing you to use it for multiple applications. The headphones can be connected on both sides of groups of 2, used to have a total of 8 outputs (4 volume controls controlling 2 outputs each).
Technical specifications Stereo Inputs: 1 Main Outputs: 4 Headphone Output: 8 THD Level: < 0.01 % Frequency Response Minimum: 20 Hz Frequency Response Maximum: 20000 Hz