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Audio Injector Zero Sound Raspberry Review

9

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Average

Revainrating 3.5 out of 5  
Rating 
3.4
🧰 Computer Internal Components, 💻 Computer Components

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img 1 attached to Audio Injector Zero Sound Raspberry
img 2 attached to Audio Injector Zero Sound Raspberry

Details

BrandAudio Injector
Hardware InterfaceHeadphone
PlatformLinux
Hardware PlatformHeadphones
Maximum Sample Rate96 KHz

Description of Audio Injector Zero Sound Raspberry

Stereo input and output, including a microhpone input (microphone supplied). Headphone amplifier - 50 mW max power into 16 ohm and 30 mW max power into 32 Ohm headphones. Standard GPIO available to allow you to keep stacking add ons and hats. DAC and ADC : 96 kHz, 32 bit audio. Linux ALSA driver already integrated into the stock Raspbian release.

Reviews

Global ratings 9
  • 5
    2
  • 4
    4
  • 3
    0
  • 2
    2
  • 1
    1

Type of review

Revainrating 4 out of 5

Nice looking board but almost impossible to get anything working

It comes with no instructions, the website looks more like an ad for their Kickstarter campaign and is extremely heavy to figure it out or make something work with it. I wish it would work, it's the most perfect P-Hat and my current audio project is becoming a reality. Too bad I can't get this to work at all. It seems to detect something, but it's also running the CPU temp much higher than it should. Now I'm coming out of a dead sound card and now a useless Pi.

Pros
  • Weight
Cons
  • Actually I don't like it everything is fine

Revainrating 4 out of 5

Good sound card for Rasbperry Pi Zero W

Everything works well including 3.5mm audio out, RCA stereo out, RCA stereo in and microphone. The software setup procedure is fairly simple, but requires some soldering. However, assembly and configuration instructions are not included with the kit, you have to search for them in the internet forum. The package does not include a GPIO connector, so you need to purchase your own GPIO connector.

Pros
  • Feels good
Cons
  • No

Revainrating 5 out of 5

Working but problems with software and documentation

So I got this as a sound card for the Pi Zero to add sound to a Simon-style game I was making. Battery operated game with standard 20x4 LCD display (HD44780) and 4 LED buttons. Driver installation worked right away, and the active headphone output is loud enough to drive a small speaker, which is basically what I needed for my project. APLAY etc. worked fine, no problems. The problems started when I tried the sound card in combination with the LCD. The LCD requires a pair of GPIOs, but does not

Pros
  • Absolute Legend
Cons
  • Great Price

This card was exactly what I was looking for: high quality sound, audio input, small size. While there are many Audio Interface Pi headgear options, very few of them have audio inputs (ADC). In fact, AudioInjector does 4 out of 5 that I know of. The fifth is "HiFiBerry DAC + ADC” which I also own. It costs three times more than AudioInjector Zero and doesn't work any better for me. I also tried AudioInjector "Stereo Soundcard". It appears to be the exact same circuit, but added volume controls…

Pros
  • Great design
Cons
  • Crumpled packaging

Revainrating 4 out of 5

Sounds so much better than the Pi's built-in sound!

This works great once everything is set up. It's as simple as soldering a header (which is NOT included!), plugging it into the RPi's GPIO port, and configuring a few lines in the /boot/config.txt file. Unlike other pssoters, the AudioInjector website has plenty of support! Sounds a lot better than the original built-in audio on the Pi. I didn't get a chance to try out the input options. This is an oversampling DAC using the WM 8731 chip.

Pros
  • Quick Change
Cons
  • Vulgarity

Revainrating 2 out of 5

Low line-in volume (-6 dB)

Great form factor! excellent sound quality at the output, but they fell on the sword by adding a -6dB limit at the line input. I'm using this for a packet radio project that analyzes audio, but I can't get full line volume from line level devices.

Pros
  • Few competitors
Cons
  • Some minor things

It looks like a really good board and the price is right. I particularly like the external cinch connections. Although I'm new to the Raspberry Pi, I have some experience with the software. I'm also a professional Embedded Engineer (now 26 years old) but so far I haven't been able to get the job done. The software says it's set up, but the Pi doesn't recognize it. Once Flatmax tried in vain to help me. The installation guide is not easy to follow or understand, and the software from the website

Cons
  • 's presence is embarrassing

Revainrating 4 out of 5

Great DAC for Raspberry Pi 4

Very good sound from Raspberry Pi 4 with this DAC board at the right price! Installation was pretty easy - soldered a 2x20 connector and plugged it into my Pi-4. Install the software as described at https://github.com/Audio-Injector/stereo-and-zero. Instructions are shared between this board and one of their larger boards, so some steps are not required (and not followed). Once installed, any audio you play in the RPi will be routed through this DAC card and the volume control in the system…

Pros
  • Robust construction
Cons
  • Without automatic

Revainrating 2 out of 5

Documents (if any) scattered everywhere

What happened to the installation and user manual? Based on other reviews I think this could be a good RPI hat but the support is terrible. Now I have to rummage around the internet as others need to find documentation (if it even exists). I would really like to know which pins on the RPi this hat is attached to. EDIT 1/6/2020: I finally got this hat installed and working. The installation scripts and minimal instructions don't mention that the SPI and I2C modules need to be enabled. If you…

Pros
  • Well built
Cons
  • Neutral