![]() In addition to having the power filter sitting between the RPI and DAC hat, the power source has to be clean to start with. Good source of power is super important for RPI to sound great. The important thing we are looking at here is the quality of output, where either of these is easily high audiophile grade over some USB DACs despite having way over the top decoding limits most of us probably will not use. Depending on one’s library of music file types, S/PDIF and I²S output capabilities are more than enough to satisfy most needs. I²S out allows higher sampling rates up to PCM384 and DoP256 while S/PDIF is capped to PCM192 and DoP64. ![]() Native DSD decoding is not possible not because of the hardware limitation, but it being an I²S limitation itself from Raspberry Pi. To bring it further up a notch as a more competent streamer, I²S is available as well. To have analogue outs in addition to digital outs is what our QAV has in flexibility. And there have been many hats doing the same as QAV, but mainly just offering S/PDIF digital outputs. For the more advance users, the digital outputs in either S/PDIF or I²S will level up the quality of sound even further from an underrated RPI/Volumio package QA has been wholeheartedly recommending.ĭAC hats on RPI is nothing new. Secondly, a major improvement on the DAC hat is the use of a Sabre ESS 9038Q2M chip at its heart while having the ability to output both analogue RCA and 3.5mm, digital S/PDIF in both Coaxial and Toslink and I²S in HDMI! The flexibility of this QAV streamer is now one could use the analogue out directly to amp without any external DAC at all. Firstly, the power filter hat has a higher capacitance value than the standalone one in total to give the best possible power source to both the RPI below and DAC hat above. To start off, the hats in QAV have been muscled up in grade to provide even higher quality sound improvement. Audition available in our shop front at Peninsula Shopping Centre #03-19, Singapore 179804īuilding on the success of our raspberry pi (RPI) power filter and DAC hats, QAV is born with a holistic inclusion of power supply within a chassis of fully decked out connectors and colour display screen professionally installed.Build and assembled on order up to 3-4 weeks lead time Add on package with a 512 or 1TB speedy XPG NVMe external portable SSD storage – fast transfer of music from computer and easy plug in to QAV.Music library can be easily imported into Volumio from internal micoSD, external HDD/SSD or through NAS wired or wireslessly.Tidal is supported on paid version at EUR60 / year Supports UPNP, Airplay and Spotify Connect on free Volumio version.Unique design of the chassis is perfectly CNCed with precision, while wordings and logo are cleanly and clearly printed/engraved.High-grade components from Gotham cables, Oyaide and Viablue are used in hook up within the board to connectors. ![]() Rack mount connectors are used for every one of the outputs, ensuring optimal, professional and premium connection.3.5 inch colourful and sharp screen in front provides useful information in date, time and details of the music being played with any accompanying album art stored.Even better fuses made for hifi from Rod Rain Audio are used at the power IEC inlet.Having excellent components of power source built inside QAV ensures the RPI and DAC are performing optimally. ![]() Including the power filter hat, there are a total 3 stages of power filtering for RPI to sound great.I²S out allows higher sampling rates up to PCM384 and DoP256 while S/PDIF is capped to PCM192 and DoP64 – generally suffice for most.Clean digital outputs from S/PDIF and I²S to external DACs give high quality and pristine signals that can sound better than using USB.DAC hat is a major improvement using Sabre ESS 9038Q2M chip with full RCA, 3.5mm, S/PDIF Coaxial and Toslink and I²S HDMI output. ![]()
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