DAC+ DSP

I use this sound card with pi3A. It works as expected. It is the most budget and versatile real time digital room correction solution I can find. It is applying correction on the toslink connected with my TV, which is also my home theatre audio switch for gaming console. With raspberry pi, I can install spotify connect and airplay server to play streaming audio with room correction.Pros:1. Most affordable real time DRC2. Can process many forms of contemporary input signal3. Programmable for various DSP requirements4. Small size5. DAC sounds good enough. Use optical out if you have better DAC.Cons:1. Needs certain degree of computer science background knowledge2. No analog signal inputs3. Low-end on board DAC chip

Yes, you can google and find all necessary information, but reading through blog posts and forum discussions make really poor substitute for a simple one pager getting started guide. Initially I struggled and couldn't even figure out how to run their default DSP profile in HiFiBerry OS. My board wasn't even powering up and I thought I had to manually install a firmware via RaspberryPi OS. Then after going through all the git stuff, I finally found out that the only thing I needed to do was to put a jumper (which didn't come with my board) on the stake pins near the TOSLINK connectors before booting to HiFiBerry OS. Apparently, HiFiBerry OS can't start the board and shorting these pins would force the board to boot. After this quick rework, HiFiBerry OS finally recognized the board and the default DSP profile could be downloaded and installed.Creating a custom DSP profile is possible, but you are basically writing a DSP firmware on AnalogDevices' SigmaStudio. So yes, there is definitely a great deal of flexibility but you really need to know what you are doing.Despite my initial struggle, I am really starting to like this board. HiFiBerry OS is really well put together network media player and the default DSP profile is still very functional and my initial impression of sound quality is also good. Use of SigmaStudio also is a plus, since I can apply what I learn from this board to something else with an ADI DSP chip. Overall, this was a good purchase for me.

It's a Hifiberry DAC+ with a DSP added. If you use HifiberryOS you can do room calibration easily. I used it to tame my bedside powered speaker which is a good quality item but the factory setup overemphasizes mid-bass to an annoying degree. Setup requires a mic and a USB interface or a USB mic. Otherwise it's just like setting up a surround sound receiver. Hifiberry OS is not as sophisticated as Moode or Volumio. It claims to work with SMB sources through MPD but it doesn't. It does work as a DLNA renderer. I use MPD with the UPNP plugin. I use MALP as a front end. You can also use an app like Bubbleupnp that works as a DLNA control point. If you use the board with other software you'll have to use software like Sigma Studio to develop room calibration. It's quasi-coding so it's not for everyone.Overall, I'd buy it again. Room calibration was easy and my bedside speaker sounds the way it should.

This product does not work out of the box. It requires additional setup using an SSH client. If you are not familiar with this you will have to do a lot of searching to figure it out, there are no clear directions from HiFiBerry but google can help you out. But alas, even then nothing works. Several people have reported non functioning units on the Hifiberry support forums and the latest feedback from Hifiberry is "might be a software problem". Good luck to anyone who attempts to use this.

Works well under raspberry 4 / Raspbian,Nice sound...The bad thing is that , it needs the full gpio , so i need to change the cooler, for an external usb one.Great product

This is a fantastic little device and incredible value. You get 16 biquad filters per channel (two digital outputs and two analog outputs from a high quality DAC). It's also one of the only ways I have found to process and then pass a digital optical (TOSLINK) signal. I'm using it like a "receiver" for my apple tv so I have volume control for my speakers.

Great little DAC. I'm using it with a RPi 3 running runeaudio. I was originally worried it wouldn't be compatible with runeaudio but it works great! You just have to select "HiFiBerry DAC" as the I²S kernel module.The optical input works great as well, it automatically mixes both the I²S and SPDIF audio together.

Product works well. Could use some documentation besides relying on community forums. Doesn't play well with Volumio.