Sounds like the waveform being supplied by the digital output stage of the Planet is distorted or messed up in some way, possibly as a result of its impedance being severely mismatched relative to the 75 ohm standard. That could conceivably be the result of either a defect in the particular unit or flawed design.
In principle that could probably be addressed, and sonics improved, by purchasing a reclocker device and inserting it between the Planet and the DAC, using a long cable between the Planet and the reclocker if necessary. But considering the age of the Planet (it appears to have been introduced in 1998) and its relatively modest cost, it would probably be cheaper, simpler, and sonically better to just replace it with a new transport.
Before doing that, however, I would suggest trying two things:
1)Try another cable that is specifically intended for 75 ohm digital applications. It sounds like you have may have just tried one such cable so far. Preferably try one that is about 1.5 meters (about 5 feet) in length. See this paper for further explanation.
2)Try temporarily putting a 3-prong to 2-prong adapter on the power plug of the Planet, so that the safety ground pin of the power plug is not connected to the outlet or its cover plate screw. The purpose of doing that would be to rule out the possibility that a ground loop issue involving the Planet may be causing or contributing to the problem.
Regards,
-- Al
In principle that could probably be addressed, and sonics improved, by purchasing a reclocker device and inserting it between the Planet and the DAC, using a long cable between the Planet and the reclocker if necessary. But considering the age of the Planet (it appears to have been introduced in 1998) and its relatively modest cost, it would probably be cheaper, simpler, and sonically better to just replace it with a new transport.
Before doing that, however, I would suggest trying two things:
1)Try another cable that is specifically intended for 75 ohm digital applications. It sounds like you have may have just tried one such cable so far. Preferably try one that is about 1.5 meters (about 5 feet) in length. See this paper for further explanation.
2)Try temporarily putting a 3-prong to 2-prong adapter on the power plug of the Planet, so that the safety ground pin of the power plug is not connected to the outlet or its cover plate screw. The purpose of doing that would be to rule out the possibility that a ground loop issue involving the Planet may be causing or contributing to the problem.
Regards,
-- Al