Sony (
http://www.sony.com/)
POC-DA12P | 7 pin -> standard optical I/O.
POC-DA12MP | 7 pin -> miniplug optical I/O.
POC-DA12SP | 7 pin -> standard output & miniplug input optical I/O.
RK-DA10P | 7 pin -> coax input only.
Important note from the Oade Bros archives: Sony digi cables compatible with the D100/M1 are POC-DA12P, POC-DA12MP, POC-DA12SP, and RK-DA10P. You cannot use the following: POC-DA12,POC-DA12M, POC-DA12S or RK-DA10. These require 5 volts to operate properly and the D100/M1 only supplies 3.5 volts. There is also a question of damage to the driver IC's and the 3.5 volt regulator that supplies the power for adapters. We have seen many D3/7/8's 5 volt regulators shorted by the use of homemade, unshielded 7 pin cables, when the pins get bent. The same may happen to the D100/M1 , due to excessive current draw.
Oade Brothers (
http://www.oade.com)
7-pin to Coax Digital I/O-P
Passive 7-pin to coax in and out cable. There's a reason this Oade Bros digi cable is so popular! Sturdy and Sony 7-pin head won't damage your female 7-pins.
7-pin to Coax Digital I/O-A
Active 7-pin to coax in/out cable. There's a reason this Oade Bros digi cable is so popular! These cables are very solid. Sturdy and Sony 7-pin head won't damage your female 7-pin slots. Short and stubby with female RCA in/out connectors.
Pro Digital (
http://www.prodigitalinc.com)
7-pin to Coax Passive Cable
Like the Oade's uses a Sony 7-pin head to ensure sturdy, quality connections with your female 7-pin. Long cable with male RCA in/out connectors.
Core Sound (
http://www.core-sound.com)
7-pin to Coax Passive Cable
I've seen a fair amount of rants about these passive 7-pin to coax in/out cables, but don't have any firsthand experience. Just looking at the cables makes me apprehensive about using one, though. The 7-pin heads are definitely not Sony standard: the pins are longer and thicker and have no "hood" to stabilize the connection or protect the pins from bending. These non-standard pins without housing are known to cause problems in female 7-pins over time.