Studiomaster HX4-600 Power Amplifier

The Studiomaster HX4-600 is a 4-channel power amplifier for installation, entertainment and rental systems where rack space matters. Its 1U enclosure measures 483 × 44 × 323 mm, allowing it to sit within a compact equipment rack alongside the rest of a sound system. The published output at 4 ohms is 4 x 255W, with separate figures provided for 8-ohm and 2-ohm operation. These figures are rated under EIAJ conditions at 1 kHz and 1% THD, with two channels working simultaneously; they should not be presented as an unspecified continuous all-channel rating.

Stereo, parallel and bridge operating modes provide options for configuring a compatible loudspeaker system. Power factor correction is part of the amplifier design, while the manufacturer also identifies operation with loads down to 2 ohms. The model-specific specification lists balanced and unbalanced input impedance figures and protection features. Choose the operating mode and load carefully using the manufacturer’s instructions, rather than treating a bridged rating as the output available from every individual channel. This listing describes one amplifier, not a complete loudspeaker package.