 This sound card for the Raspberry Pi differs from all others in that it powers the Raspberry Pi instead of the other way around. And that comes with some monetary advantages. The Mambo Berry 24-192 sound card for the Raspberry Pi does not only have a DA converter aboard but also an entire linear power supply with the exception of a transformer. The Greek manufacturer and supplier Colibia offers two matching transformers, a simple 6V 2A laminated steel core model at €12 and a toroidal transformer specially suited for audio at €35. Simply connect the 6V AC output of the transformer to the screw terminal and mount the PCB on a Raspberry Pi 2B or 3B and you're ready to go. You could also use a 9V DC power supply if you happen to have one line around. The big advantage is that you have a Raspberry Pi with DAC and linear power supply for €164 and only have to make or buy a nice cabinet. Colibia offers a nice kit, housing, sound card, Raspberry Pi 3B and toroidal transformer at €225. The Mambo Berry is advertised as compatible with all music players that support iSq2 at S, like Volumio, Mood and Roon. I had a Pi Core player installed on the Pi that normally has the Hi-Fi Berry Digi-Plus mounted with the power supply input on the Digi-Plus board. I removed the Digi-Plus Pro, mounted the Mambo Berry, connected a 6V AmpliMode toroidal transformer and the amplifier. The player immediately popped up in Roon, supporting the DAC. Since this went so effortless I didn't try other players for compatibility. As usual you can skip the tech by jumping to the timecode above. The PCB is full of SMD components, of which the model numbers are about impossible to read. I see Nishkon UA Aluminum capacitors in the power supply and RIVA EVOX polypropylene film aluminum foil capacitors next to the ESS Sabre 9023P DAC chip. The low jitter espresso fox clock oscillator is mounted close to the DAC chip. It all gives the impression a connoisseur has been designing the Mambo Berry. The only less positive point is the quality of the RCA's that are loosely mounted on the PCB. They won't break easily but it doesn't feel very positive. For the rest the print is the work of a pro. It even has a cutout and slot for the display and camera flexible print connectors. The signal part is no different than on other DAC boards for the Pi. The software sends the audio of the GPIO connector using I2S to the ESS Sabre chip where it is reclocked, upsampled and converted to analog. If you newly installed a player you need to set the output channel in your player software to the I2S output. Using Roonlabs to drive the Pi Core player software we evaluated the sound in comparison to a second Pi with the HiFiBerry DAC Plus Professional with the BTO W linear power supply connected directly to the header I soldered on the HiFiBerry PCB. See the link in the top right corner for a description. All my set three differences were very hard to hear and even in set two the differences between the two is so small that I would find it insignificant. The only difference is in the highs and that's slightly more accentuated in the MamboBerry. In set one the differences remain small and it's more a taste thing than a quality thing. The HiFiBerry is slightly more rounded, the MamboBerry slightly brighter. In the absolute sense the quality of both is at the lower end of set two which is a remarkable result for a streamer that costs around € 225 without the housing. The HiFiBerry with BTO W power supply costs around € 80 more. It will be interesting to see what cheaper linear power supplies will do. Unfortunately they didn't arrive yet. Normal DACs when fed directly from the Raspberry Pi power sound horrible. Harsh, poor stereo image, limited low, bad sibilance control and so on. The small modifications are made to the HiFiBerry DAC Plus professional feeling a very clean power to the DAC board first made a great difference. Since the MamboBerry has its own well designed power supply it sounds as good as my modern DAC Plus. And that's not bad at all. The MamboBerry is a very well built product that offers a good price performance. When I had finished testing I saw a jumper that seems to decouple the power supply of the MamboBerry from the power lines of the Raspberry Pi. That way both can be fed separately. I don't expect much of a difference so I'll let it be. On the side they announce a new MamboBerry sound card that does DXD 352.8. It looks much the same as the card I reviewed here and to be honest I don't think DXD is worth the enormous hardy space penalty. Certainly not at this level. You might rather spend the money on audio hardware than on DXD versions of music you already own. Whether I am right only time will tell. So all reasons to subscribe to this channel or follow me at Facebook, Google+, or Twitter. You can also post questions there but please view my questions video first. See the link in the top right corner. You'll find more information in the show notes below this video on YouTube. If you liked this video please give it a thumbs up and tell your friends on the web about it. I am Hans Beekhuyzen, thank you for watching and see you on the next show or on theHBproject.com. And whatever you do, enjoy the music.