7 Inch testrecord for usage with platterspeed for iOS and Android.
Face A:

• 3.15 kHz test tone - speed adjustment / wow&flutter
  
• 1 kHz test tone out of phase
  

Face B:

• 315 Hz test tone +10 up to +16 dB - antiskating
  
• endless loop - silent groove
  
• 1 kHz stereo - left only - right only - crosstalk/azimuth
  
• 3-15 Hz in 1 Hz steps - visual control of resonant frequency
  

We kindly ask you to buy through our local representatives! No shipping to US and Australia!

US customers please contact Avatar Acoustic, 888.991.9196
Australian customers please contact puremusicgroup, 0409 504 805