This Beta VCR has an AUDIO DUB button or switch. It lets you record over and add (dub) audio to the NORMAL sound track that uses the stationary audio head in the ACE assembly. This separate track can be used for instruction, translation or a different audio forum. The picture can be viewed during dubbing. Betahi-fi stereo cannot be dubbed separately because it is imbedded in the video signal. ©Misterßetamax go to homepage