I replaced my HRT MusicStreamer II+ USB DAC with an IQAudio PI-DAC+ I2S DAC for my Raspberry Pi B+ and the sound is stunning. The case is really cool too, and the company seems to have great tech support. The PI-DAC+ supports hardware volume control.
Just looked at the Dac from Tjaekel. Never heard of it before but always curious to try out different Dac.
But from the specs he also uses PCM5102.
Personally I am actually looking into getting an external Dac that can play DSD Natively but I worry about the usb port of the Pi.
I’m curious about the wifi-audio products but no place to test them in the country where I work ifi-audio.com/portfolio-view/micro-idsd/
I have a Raspberry Pi 2 with a DIGI+ card. All is running well except the modification of volume.
In “Menu/Playback/Volume Control Mixer/Mixer type” the default value is “Hardware” but don’t let me to change volume.
If I set the value to “Software” and reboot the MPD the volume can be changed but the quality is worse.
You haven’t missed anything, this is the correct behavior for the HiFiBerry Digi+ (I’m assuming that it is the HiFiBerry Digi+ you are referencing to when you say DIGI+ card). Since the Digi+ isn’t a DAC but a digital transport (from I2S to SPDIF) there is no hardware volume to change since the signal isn’t converted to analog. Instead you can use the software volume controller as you already has found out. I used my Digi+ on a RPi 2 that way when I ran Volumio 1.55 and I don’t find the quality to get worse.
True, the volume control should be done by the preamplifier. The reason I have for using a software volume control is that my DAC, which also acts as the preamplifier feeding a power amplifier, doesn’t have a remote controlled analogue volume control and sometimes I’m a bit lazy and a couch potato
I usually “solve” this by disabling the volume control in Volumio and “forget” that I’m a couch potato when I’m doing serious listening. For more casual listening I’m using AirPlay and the volume control on my iOS device.