The HC6S features two balanced Inputs that provide a master stereo signal to six stereo headphone amplifiers, with individual stereo level controls. The Master Level control allows adjustment of the main stereo Input level for proper matching to any source. In addition, a Stereo/Mono switch converts the stereo Inputs to mono operation when required.

The MULTI CAN is a compact yet high-quality 4 channel headphone amplifier, featuring 6.35mm TRS, dual RCA and dual XLR stereo inputs and 6.35mm TRS headphone outputs. The MULTI CAN also offers individual output level controls per channel.

The FP12 is an in-line, battery-powered amplifier designed to accept a microphone or line-level signal and produce a signal sufficient to drive headphones at very loud levels. The FP12 is ideal for anyone in the broadcasting, sound reinforcement or audio recording fields who has a need for headphone monitoring or checking microphone- or line-level cable runs. In addition, the FP12 can be used to provide multiple headphone feeds, a two-station intercom, extra power for existing headphone circuits, or a means of practicing electronic instruments through headphones.

The FP22 is a battery-powered stereo headphone amplifier that provides headphone feeds from any audio input source. It has the unique capability of monitoring mono, stereo and mixed mono and stereo inputs. The FP22 monitors and combines these signals in the headphones without affecting the original signal. Stereo or mono headphone outputs appear on 1/4-inch phone or mini 3.5 mm stereo jacks. The FP22 can drive headphones to very loud levels. It is ideal for anyone in the broadcasting, sound reinforcement or audio recording fields who needs a flexible, high–quality headphone monitor