Thank you for viewing. This is a Tascam PortaStudio 424mkIII MTR. I bought it new when it was released and it was kept at my parents' house. ◎ I tested recording and playback, and it worked normally. ◎ I believe there is no noise such as crackling. ◎ There is some yellowing and discoloration on the levers, buttons, and knobs. ◎ The adapter is genuine. No instruction manual or box included. It is an old item, please check the photos and consider purchasing. #MTR #CassetteTape #Recording