A rare British-made professional power amplifier manufactured by Eminence Audio Ltd of Bath, Somerset. This is a substantial 2U rack-mount amplifier providing four independent amplifier channels with individual front-panel level controls. The unit has been fully tested and all four channels are operating correctly, producing clean, undistorted output. The amplifier appears aimed at professional PA, installation and sound reinforcement applications and incorporates flexible routing options including mono and bridge operation for both channel pairs. Manufactured by Eminence Audio Ltd, Bath, UK. 2U rack-mount professional amplifier. Four independent amplifier channels. Individual gain controls for each channel. ¼ jack link outputs. Mono mode switching for channels 1+2 and 3+4. Bridge mode switching for channels 1+2 and 3+4. 3-pin XLR output connectors. Individual clip indicators for all four channels. Fault indicators for channel pairs 1+2 and 3+4. Internal inspection shows each channel employs two pairs of BUZ2900/BUZ2905 complementary MOSFET output devices operating from approximately ±80V supply rails. This suggests the amplifier was designed as a high-power professional unit. Photographs of the internal construction are included to allow prospective purchasers to make their own assessment of the design and likely output capability. Fully tested and in good working order. All four channels produce clean, undistorted audio and respond correctly to the front-panel level controls. Controls operate smoothly with no significant crackling or noise noted during testing. The cooling fan operates correctly and the amplifier runs normally. Mono and bridge switching are present as described above. Cosmetically, the amplifier shows signs of professional use and storage consistent with its age. Some front-panel legends are worn and there are general cosmetic marks, scratches and signs of use. Please study all photographs carefully as they form part of the description. Eminence Audio Ltd QPX1200 amplifier only. Mains lead available upon request. No additional accessories are included unless shown in the photographs.