PreSonus HP Headphone Amplifier

Three answers to the headphone problem, scaled to the size of the session. The HP2 is a belt-pack stereo amplifier for a performer on in-ear monitors: two XLR line inputs, a stereo 1/8-inch output with volume, a stereo/mono switch and a pan knob, running from a 9V battery or a DC supply, with a 2 m cable in the box.

The HP4 is a four-output distribution amp with left and right line inputs, line outputs with level control, per-output level, stereo-to-mono summing, and a monitor mute that leaves the headphone outputs live. It takes a third of a rack space or sits on a table. The HP60 is the full cue system: six headphone amps each with its own level, two stereo line inputs routed to all six with a per-channel Mix control so each musician can balance a click against the main mix, plus an external stereo input, mono and mute per channel, a talkback mic input with a Talk button, and a footswitch input. Two HP60s chain for twelve headphones.