Receiving the ideal efficiency from the digital tape recorder such as the DA88 depends mainly on conscientious upkeep and cleaning. Tascam's Main assistance manager, Joe Fialho, tells Paul White what can safely be completed with the user — and when it's necessary to contact within the professionals.Th? t?c c?p, c?p l?i gi?y ch?ng nh?n ?? ?i?u ki?