From the Krell MD-20 manual:
Transport:
Modified Phillips CDM-1 MKII with Hall effect motor, swing-arm design unicast frame.
Laser:
Single Beam with glass lens.
Output:
Digital only in industry standard SPDIF format.
1 FIBER OPTIC via standard interface
1 COAXIAL via RCA connector
1 AT&T via ST connector
1 AES/EBU via XLR connector
REMOTE CONTROL:
Wireless infrared
Dimensions:
19.0" wide
12.5" deep
6.0" high, cover closed
15.0" high, cover opened
WEIGHT:
20 pounds unit only
33 pounds in box
I purchased an MD-20 after doing a back to back listening test with a MD-1. The 20 had a better sound to my ear. I had a chance to do back to back listening test with an MD-10 and my MD-20. To my ear the 10 sounded better. I now have a 10. Krell made two versions of the 10 one with a CDM3 and another with a CDM4 Pro.
Transport:
Modified Phillips CDM-1 MKII with Hall effect motor, swing-arm design unicast frame.
Laser:
Single Beam with glass lens.
Output:
Digital only in industry standard SPDIF format.
1 FIBER OPTIC via standard interface
1 COAXIAL via RCA connector
1 AT&T via ST connector
1 AES/EBU via XLR connector
REMOTE CONTROL:
Wireless infrared
Dimensions:
19.0" wide
12.5" deep
6.0" high, cover closed
15.0" high, cover opened
WEIGHT:
20 pounds unit only
33 pounds in box
I purchased an MD-20 after doing a back to back listening test with a MD-1. The 20 had a better sound to my ear. I had a chance to do back to back listening test with an MD-10 and my MD-20. To my ear the 10 sounded better. I now have a 10. Krell made two versions of the 10 one with a CDM3 and another with a CDM4 Pro.