Esoteric K-01X. It is one of the best single box CD/SACD players. It can do pure DSD with SACDs and DSD files and upsample redbook up to 8x or convert it to DSD. It has 8x32 bit AKM 4495 DAC chips per channel to achieve 35 bit processing algorithm. It has a newly developed analog output stage also used by Grandioso D1 DACs. It sounds better than its predecessor K-01 with more delicate, airy and refined highs. To improve further it is recommended to use it with G0Rb or G01 Rubidium clocks.