Amplifiers; tube amplifiers; apparatus for the amplification of sounds; compact disc, CD-ROM, CD-ROM interactive CD-ROM, CD-RAM, CD-R, DVD, digital cameras and camera portable video recorder with built-in (camcorder) products for video camera CD-ROM, DVD-ROM cassettes, compact disc, video tapes, video compact disc (laser disc), compact disc interactive (CD-I), disk read only memory (CD-ROM), DVD, CD-ROM; turntable; lighting and sound amplifiers