supply, erection, testing ,commissioning of radio station (radio jockey) systems in district jail rewari , supply, installation, testing & commissioning of rack-mountable bluetooth amplifier with mixer providing and installing a rack-mountable bluetooth amplifier with in-built mixer, suitable for pa and background music applications. the amplifier shall have 1 × line 200 mv unbalanced input and 2 × line 1 v balanced inputs through xlr connectors, with one 1 v input having priority over all other inputs. the scope includes supply of the amplifier, rack mounting accessories, necessary interconnections, testing, and commissioning to ensure proper operation and satisfactory performance as per site requirements and directions of the engineer-in-charge. make: bose , ahuja, biamp , supply, installation, testing & commissioning of wall-mounted music speakers providing and installing wall-mounted music speakers of 10 watts, 100v line system, suitable for background music and public address application