As a reminder (was helping someone else the other day), make sure your digital receiver supports DTS before using this driver for SPDIF.
An additional side note, a proper digital Class-D system should have no DAC, it will also be 48 bit ~200 Mhz.
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Hopefully soon we will get RGB Optical or similar, and can do 256 bit 200 Mhz from the source (no pseudo, generated samples or bits).
Below are images of a PCM or PAM based input (RGB), in PAM mode the source data moves the speaker(s) directly.
In PCM mode (all current devices), the main unit will generate additional samples, and bits.
One bit (colour pulse) transmission, means the bitrate is the sample rate, x number of channels (or just the rate if one speaker).
For example, 1 speaker output at 200 Ms/s would need 200 Mbits/s per second of RGB Optical (1 bit x rate).
10 total channels RGB Optical, 256 bit @ 200 Ms/s = [2 Gbits/s].
10 total channels PCM, 256 bit @ 200 Ms/s = [512 Gbits/s].
The above illustrations are simplified.