2LP 180 Gram 45RPM Mobile Fidelity audiophile edition. Collection of Dylan's world-changing singles 1963-1966. 3 different mastering techniques, depending on the track. 1/2" / 30 IPS analog remix master to DSD 64 to analog console to lathe, 1/4" / 15 IPS analog master to DSD 64 to analog console to lathe & 1/4" / 15 IPS analog copy to DSD 64 to analog console to lathe.