Beware of SACD Transports -- they probably will not work with your favorite DAC


Hello, I just learned a painful lesson. I'm guessing that not many people will know this so I'm going to put it in here.

The audio on a SACD is encrypted.
If I were to purchase a SACD / CD player I have nothing to worry about. The Audio is un-encrypted inside the player.
However if I were to purchase a SACD / CD Transport made my brand Z, I would have to purchase a brand Z DAC???
Apparently Sony who owns the SACD format mandated that the audio on the SACD itself is encrypted and
the digital output from a SACD transport is ALSO encrypted. It looks like the actual un-encryption is done in the DAC.
There is no standard for doing the un-encryption so every manufacturer has their own proprietary way of doing this.
So I cant use a Esoteric SACD transport and an Auralic DAC which is what I tried to do?
londontk

Showing 1 response by jeffstarr

The transport and the DAC have to do a handshake to output the DSD off a SACD. I believe DCS can do it using a pair of AES/EBU XLR cables. PS Audio does it by using a highly modified Oppo transport that paid for the license. The DSD is only available through the I2S output using an HDMI cable.So you would need a Directstream Memory Player and one of their two Directstream DACs. The fact that they use a HDMI cable, does not mean it is outputting HDMI.

As said, some HT Receiver, like Denon could play DSD through an HDMI cable, because they bought the licensing from Sony, and you still usually have to use their universal Blu-ray, DVD, SACD player.

If you go over to the Computer Audio forum, there is a script that you can use with some Oppo players, I believe the 103 105, and a few others. You load it on to a flash drive, and it will give you the data off a SACD disc, which would then be loaded to a PC or a dedicated player like an Aurender, using it through the USB output to a DAC that will decode DSD.
Usually you need both the transport and DAC from the same company. Mix and match seldom works.
If a company makes a SACD transport with no DAC, they will have a DAC that can play the SACD.