Prodisc Spin-X 0134.9600White Inkjet Printable DIGITAL-AUDIO 80-Minute CD-R's by 100-Pak High-Performance Digital-Audio CD-R's! Premium, Professional Grade Digital-Audio CD-R Media are capable of record speeds from 1X to 4X (and, compatible in most computer cd recorders at 40X, too!). These are the media needed for recording on Philips, Pioneer, Harman/Kardon, JVC & Marantz (and others) brands of home CD-Recorders. Known as Digital-Audio, these are the media supported by consumer audio-only cd-to-cd home recorders. These consumer audio-only CD-R discs meet the standards of the Audio Home Recording Act (AHRA) of 1992, which requires a royalty to be paid by the disc manufacturer to the music industry. These CD-R's support the Serial Copy Management System. 80-Min Music (Digital-Audio) CD-R's. White Inkjet Printable top surface, lite-green record surface. Sold in shrinkwrapped 100-disc pak's, no cakebox. Important Compatibility Note: Some Philips models (specifically the 775 model, and occasionally the 765, 785 and other similar models) may not work with these non-branded cd-r's due to the Philips' common problem of a faulty power calibration unit. This problem is becoming rare, but test samples are recommended.