by skypickle » Fri Dec 30 2016 21:27
The following graph is telling, comparing the signal phase noise (result of jitter) of various setups. As can be seen, standard i2s solutions on the RPi, even with a low jitter Sabre DAC, perform significantly worse than a basic cd player, while the USB interface shows more potential.
by allo » Fri Dec 30 2016 22:29
by santanacorreia » Sun Jan 01 2017 16:31
mictester wrote:We're talking £25 devices here guys - they will never match a £10k Linn streamer, but for the small investment it'll sound much much better than a USB DAC and make you smile knowing that you can spend the remainder of the £10k on content, nice wine and holidays.
You're partially right - with a reasonable DAC (not necessarily a laboratory-quality one) and I²S connection, it's indistinguishable fron a £10k Linn with most source material! Anyone who tells you anything else is just deluded (and desperately trying to justify his squandered £9,950!). The limiting issues are the housing of the DAC - it should be screened to prevent the analogue end of it picking up noise - and the power supply - don't dream of using any kind of SMPSU for your DAC!
Just for fun, I recently A - B blind tested a Raspberry Pi / 9023 DAC (homebrew) against a £4k streamer (I won't embarrass the manufacturer) and no audiophile, record producer, engineer or musician who tried the test could tell one from the other. This conclusively proves two things:
1. The manufacturers of high-end, high-priced hi-fi are full of BS and they're just selling a "brand name" rather than anything particularly clever or well-made
2. The Raspberry Pi is a wonderful little device (if a little under-powered in these days of 4GHz processors)!
by DilanRoster » Wed Jan 11 2017 11:03
by alpuy » Wed Jan 18 2017 14:41
by sangchodecuba » Sun Feb 12 2017 21:54
by michelangelo » Sun Feb 12 2017 22:00
by santanacorreia » Mon Feb 13 2017 13:08
michelangelo wrote:1- The PI indeed can output 24-bit sound via I2S
2- Yes, I2S is a jitter-prone interface. That's why Reclockers such as the Kali are so effective in improving sound quality on Rasperry PI.
by michelangelo » Mon Feb 13 2017 14:36
by sangchodecuba » Thu Feb 16 2017 05:34