â Product ID: ESSI-90133/38 (6 discs)â Format: SA-CD/CD Hybridâ Label: impulse! â DSD mastering / SA-CD layer: Stereoâ Box set / Deluxe Digipak packagingâ Limited edition (4,000 sets) Jazz Masterpiece Collection ESOTERIC proudly introduces a new series of re-master collection ? A great Jazz collection from impulse! label. The reissue of historical music masterpieces by ESOTERIC has attracted a lot of attention, both for its uncompromising commitment to recreating the original master sound, and for using hybrid Super Audio CD (SACD) technology to improve sound quality. These new audio versions feature ESOTERIC's proprietary re-mastering process to achieve the highest level of sound quality. ESOTERIC equipment used for re-mastering The criterion of re-mastering is to faithfully capture the quality of the original master. ESOTERIC?s flag ship D/A converters, model D-01VU, Rubidium master clock generator model G-0Rb and ESOTERIC MEXCEL interconnect cables and power cords, were all used for this re-mastering session. This combination of highly advanced technology greatly contributed to capturing the high quality sound of the original master. Experience by yourself? Experience the legendary performance in this new Super Audio CD/CD format. Not only for new followers, but also for well experienced followers of these recorded materials. All will be equally impressed by the soul hidden within the notes, but never before found in previously released recordings in any format.