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Hello all! I'm new in the world of RB Pi DAC's and I'm looking now to buy an Allo Boss 1.2 for my RB Pi 3 B+. But my final objective is that the Allo Boss 1.2 will not be only the DAC for the contents passed by the RB Pi, but also that the DAC could receive HD digital signals (24/192 minimum) from external sources (an external PC for example) via SPDIF Toslink and/or coaxial. So, could you recommend me any other board that can provide to the Allo Boss 1.2 the Toslink/coaxial inputs it doesn't have? The ideal would be a card that can be stacked with the Boss using, ideally, the GPIO, without need to solder anything (I'm not a solder expert :-). Also, if the approrpiate board exiss, I'm worried about the drivers to manage the combination, given I'm using Raspbian with JRiver Media Center 25 as content manager. Thanks for your help and support. Best, Manuel.

Hi! I have the original Boss (ver.1) powered via Raspberry Pi 3b using a wall-wart. I would like to power the dac independently via the J4 connector using AA or other batteries. An Allo pdf file (attached) shows images of some resistor to be assembled (removed?) but offers no other instructions on procedure or equipment needed to do this. The method appears complicated - is there a simpler way? I have limited electronics experience and need help on how to do this. Can you provide the required instructions and also equipment i.e. wires, battery pack, etc? Thanks. Boss-5V-External-Power.pdf

I have an Allo Boss DAC 1.2 installed on a Raspberry Pi 3B+ running Moode 4.3. 1) If I have J25 installed and power the DAC and Pi from a single 5V power supply, music plays, all works. On the Boss DAC, both the power LED and LED1 light up (green). 2) If I remove J25 and use two 5V DC power supplies, one to the Boss DAC USB-C and the other to the RPi3B+ USB Micro-B, it seems the DAC does not work. Only the power LED lights up, but LED1 remains dark no matter what. When I try to play a music file, I get this error: MPD errorFailed to open "ALSA default" [alsa]Failed to open ALSA device "hw0,0" Nosuch file or directory It appears the DAC is not working with J25 removed. What could be causing this? Output from cat /var/log/moode.log : pi@moode:~ $ sudo cat /var/log/moode.log20181211 212124 worker: - Start20181211 212124 worker: Successfully daemonized20181211 212124 worker: Integrity check ok20181211 212125 worker: Session loaded20181211 212125 worker: Debug logging (off)20181211 212125 worker: - Platform20181211 212126 worker: Host (moode)20181211 212126 worker: Hdwr (Pi-3B+ 1GB v1.3)20181211 212126 worker: Arch (armv7l)20181211 212126 worker: Rasp (9.4)20181211 212126 worker: Kver (4.14.76-v7+)20181211 212126 worker: Ktyp (Standard)20181211 212126 worker: Gov (performance)20181211 212126 worker: Rel (Moode 4.3 2018-09-27)20181211 212126 worker: Upd (2018-10-19)20181211 212126 worker: MPD (0.20.20)20181211 212126 worker: USB boot enabled20181211 212126 worker: File system expanded20181211 212126 worker: HDMI port off20181211 212127 worker: File check ok20181211 212127 worker: - Network20181211 212127 worker: eth0 exists20181211 212127 worker: eth0 (192.168.0.105)20181211 212127 worker: wlan0 exists20181211 212127 worker: wifi country (US)20181211 212127 worker: wlan0 SSID is blank20181211 212127 worker: eth0 addr exists, AP mode not started20181211 212127 worker: wlan0 address not assigned20181211 212127 worker: - Audio20181211 212127 worker: ALSA outputs unmuted20181211 212127 worker: ALSA card number (0)20181211 212127 worker: Audio out (I2S audio device)20181211 212127 worker: Audio dev (Allo Boss DAC)20181211 212127 worker: ALSA mixer name (Digital)20181211 212127 worker: MPD volume control (disabled)20181211 212127 worker: Hdwr volume controller exists20181211 212127 worker: Chip options (Burr Brown PCM5122)20181211 212127 worker: - Services20181211 212127 worker: Reset renderer active20181211 212129 worker: MPD started20181211 212129 worker: MPD scheduler policy (time-share)20181211 212129 worker: Configure MPD outputs20181211 212129 worker: MPD output 1 ALSA default (on)20181211 212129 worker: MPD output 2 ALSA crossfeed (off)20181211 212129 worker: MPD output 3 ALSA parametric eq (off)20181211 212129 worker: MPD output 4 ALSA graphic eq (off)20181211 212129 worker: MPD output 5 ALSA bluetooth (off)20181211 212129 worker: MPD crossfade (off)20181211 212129 worker: - Music sources20181211 212129 worker: USB sources (none attached)20181211 212129 worker: NAS sources (none configured)20181211 212129 worker: - Miscellaneous20181211 212129 worker: Volume level (0) restored20181211 212129 worker: Maintenance interval (21600)20181211 212129 worker: Screen saver activation (Never)20181211 212129 worker: Watchdog started20181211 212129 worker: Ready20181211 212138 worker: Job i2sdevice20181211 212208 worker: Job mpdcfgpi@moode:~ $ Please help. I would like to be able to use the Boss DAC 1.2 with separate power supplies for DAC and Pi, since that is supposed to perform so much better.

HI I just got allo boss kit with RPi and 5v adaptor then I setup volumio it work correctly but after I connected to amplifier there are loud noise so I cant even use it. please suggest me how to fix it. What I have done. (but noise still noticeable.) - Reboot RPi - Connect power adaptor between c-type(BOSS) and micro(RPi) - disassemble and reassemble it again. PS. I have another RPi connected to USB DAC and plugged into this amplifier has no noise at all. Thank you

Has anybody else have the same configuration that works on WiFi? Running either Dietpi with squeezeplay or Volumio yields same result. WiFi works fine without Allo Boss card. With Allo Boss DAC on top WiFi no longer connects UNLESS I have Ethernet also plugged in and connected. This is the weird part, with Boss I can ssh via Ethernet. I can also ssh Pi from WiFi IP. Remove Ethernet cable and WiFi stops leaving Pi unreachable. After days of trying everything it became apparent this is hardware related. Today I removed the power jumper from the Boss board and used 2 power supplies, one for Pi, one for Boss. WiFi will then connect only if I power up Pi first. If I power up at the same time or power Boss first then no WiFi. When I do get WiFi the OS turns off audio and squeezeplay wont run because it wont load the Boss drivers presumably. Manually forcing the OS in Dietpi to use the Boss kills WiFi again. Infuriating how much time I have wasted with this straight out the box. Squeezeplay works fine with no Boss card and Pi onboard audio. This is with a fresh image of Dietpi which I have also reflashed several times to start form scratch. Also could there be some conflict in resources between WiFi and Boss driver? Have I got a faulty Boss board? Has anyone else out there got this setup that works? BTW, I am also using Allo relay attenuator, which has been removed until the Boss works. Also using standard Allo 5v 3A power supply. Have tried another known good power supply.

Hello, In my combination of RPI 3B+, BOSS v1.2 & VOLT a low buzzing can be heard. I use the certified RPI power supply for both RPI and BOSS, and a 19V /65W notebook PSU from HP. The buzzing doesn´t increase when volume is iscreased. Has anybody discovered this as well? Any clue where it comes from? Cheers, AnnaBlume

Hello, I am looking to build the system described above. It's the official Raspberry Pi 7 inch touchscreen. I'm not clear on the best way to power it up. Will a 3 amp power supply be sufficient? I hear that the touchscreen is kind of power hungry. cheers, Marc