Labarum wrote: > I presently have a Beresford DAC strapped to the back of the TV with its > two optical inputs driven by > > 1.A Chromecast Audio dongle receiving via Castbridge > > 2. A TV which has a Chromecast Video Dongle attached - this dongle is > also recognised by Castbridge and audio may be streamed by that route. > > LMS sits on a old PC and works well enough though a Raspberry Pi would > use less power! > > The old Beresford DAC is able to drive the amplifier and speakers (when > switched on) and, with a separate volume control, drive headphones, so > I have a setup that suits my needs well. > > I have seen the HIFIBERRY DIGI+ I/O advertised > > https://www.hifiberry.com/shop/boards/hifiberry-digi-io/ > > and I wonder if a Raspberry Pi with this hat and PiCorePlayer would > allow me to achieve the same ends as above. > > Is it possible to use the I/O board for TV sound loopthrough? Would > PiCorePlayer control the hat effectively for that purpose? I note the > latest PiCorePlayer has graphical control of ALSA mixer, and that gives > me hope. Deep modification of the underlying Linux would be beyond me. > > If this were possible a passive splitter on the analogue output of the > HiFiBerry DAC would allow me to drive both the Loudspeaker Amp and a new > Headphone amp with independent control. > > Is this a sensible approach as I look to replace ageing hardware? What > other options might I have? > > A new external DAC with HIFIBERRY DIGI+ STANDARD > > https://www.hifiberry.com/shop/boards/hifiberry-digiplus-standard-version/ > > would be one. I note some say taking the digital stream out from the > Raspberry Pi by USB is not such a good option for sound quality. > > > It must be a common need to merge TV sound into a quality lounge audio > system.
The USB external DAC poor sound quality was a criticism of the pre Pi4 architecture where the USB ports shared a bus with the Ethernet port. That architecture changed with the Pi4, where the USB ports have a dedicated bus. I think now itÂ’s accepted that with the pi4 architecture there is good quality sound from a USB external DAC. That has certainly been my experience. If I understand your requirements correctly, I would recommend something like a Topping E30 DAC https://www.amazon.co.uk/TOPPING-E30-Hi-Res-AK4493-Decoder-Black/dp/B0868J7NRV/ref=sr_1_3?crid=13G5FCJ0K184Z&keywords=topping+dac&qid=1641811256&sprefix=topping+dac%2Caps%2C46&sr=8-3. You can connect your Pi to the USB input and your TV to the optical input. I use an E30 in this way and also have a CD player connected to the Coaxial input and am very happy with the sound quality. ------------------------------------------------------------------------ coyrls's Profile: http://forums.slimdevices.com/member.php?userid=44253 View this thread: http://forums.slimdevices.com/showthread.php?t=114828
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