3/$25 vintage 60s stereo system test record

vintage 12 inch test record for 'sound reproduction capabilities of your stereo system' test channels, frequency, tone, speakers, white noise, hum, flutter, rumble, balance believe 60s 70s 3/$25 offer - This listing is for one item. Bundle 2 more items from different listings marked as 3/$25 to qualify for offer - lots to mix and match retro, technical, testing, check