The Prebox S2 isn't a particularly reliable device. My son went through 2 of them, getting a refund.
It would intermittently stop playing despite a locked SPDIF input. Theres something in the firmware causing this IMO. We used a PC to generate a diagnostic signal to test the individual flags set going in on PCM. It would respond erratically to higher sample rates with specific filter settings.
He ended up saving his money for an RME ADI2. Better sound and much more reliable, especially on HP out.
It would intermittently stop playing despite a locked SPDIF input. Theres something in the firmware causing this IMO. We used a PC to generate a diagnostic signal to test the individual flags set going in on PCM. It would respond erratically to higher sample rates with specific filter settings.
He ended up saving his money for an RME ADI2. Better sound and much more reliable, especially on HP out.