Four copy cassette tape expansion module for Recordex SoundMaster II (will allow you to copy 6 with this expansion unit) and
SoundMaster IV (will allow you to copy 8 with this expansion unit). 

Features include: Individual level controls with four L.E.D. peak level indicators, extra long life T-coreTM stereo heads, Ferrite erase heads, auto or manual operation, and switching power supply from 110V to 220V.

Also, this unit is all steel construction with a removable power cord, and comes with a protective dust cover.