9 Cabinets for loudspeakers, loudspeakers and amplifiers; apparatus for recording, transmission or reproduction of sound or images; magnetic recording media, namely, blank audio CDs, blank DVDs, CDs featuring recorded music, DVDs featuring recorded music concerts; sound recording disks, namely, blank CD-ROMS; compact disks, namely, compact discs featuring recorded music; DVDs, namely, DVDs featuring recorded music concerts; other digital recording media, namely, blank USB flash drives; central processing units for processing information, data, sounds or images; sound processors, namely, music instruments effects processors and voices effects processors; signal processors for audio speakers, cabinets for loudspeakers and amplifiers; software for monitoring, checking and improving the sound quality of audio equipment such as loudspeaker cabinets, loudspeakers and amplifiers; firmware for monitoring, checking and improving the sound quality of audio equipment such as loudspeaker cabinets, loudspeakers and amplifiers; computer programs and firmware for monitoring, checking and improving the sound quality of audio equipment such as loudspeaker cabinets, loudspeakers and amplifiers; software embedded in central units for processing, monitoring and checking the acoustical properties of audio equipment such as loudspeaker cabinets, loudspeakers and amplifiers