Power 4 pairs of headphones.
The HA-1X4 4-Channel Headphone Amp is versatile--perfect for most studio recording, live rehearsals, and field recording applications. It allows four channels of stereo headphone monitoring with individual level controls. The advanced design of the HA-1X4 Headphone Amp allows the widest dynamic range, with lowest noise and distortion. The 1/4" stereo jack input can be driven by any line level or headphone amp output. Rugged metal chassis for long-life reliability.