The Recordex SoundMaster IV Add-On Module is a 1/4 track, 4-channel, expansion add-on unit for the SoundMaster IV Duplicator to make four additional copies from a master at 30 ips. or 76 cm/s (16 times normal speed). 
  
Features include: 
 • Extra long life T-coreTM stereo heads
 • Ferrite erase heads
 • Switching power supply from 110V to 220V
 • All steel construction 
 • Removable power cord 
 • Protective dust cover

Specifications:
 Frequency response - 40Hz to 10.000Hz
 Bias frequency - 500Khz
 Signal-to-noise ratio - 45 dB Peak
 Warranty - One year limited on unit and One year on T-core heads