Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer

Works great, plug and play. As long as you source is 5.1 it will go through fine. Optical still of use with a laptop to get to a soundbar that didn't have ability to use all of the resolution of my monitor surround sound.

I have only had it for a few days and will update if issues happen.Sound wasn't coming from my Beam Gen 2 when using this with the optical to HDMI adapter from my Windows PC, a SPDIF output was showing up in outputs but no sound was coming out, even when plugged into a MBP. I assumed the cable was bad and was going to return it.Before doing that I messed around in the Sonos app for a bit, factory resetting the Beam a few times and re-adding it to the system. I even tried downgrading the Beam to S1, which didn't work and errored out. After re-moving, re-adding and going through the "Pair to TV" option in the app it just suddenly started working.So for anyone having issues getting sound to work with Sonos products, it might just be the app and not the adapter.EDIT: So it turns out it's setting the output to "TV" in sources.

I plugged it in line from my Mac Mini into the optical input on my pre-hdmi receiver and it worked great. No question better (5-channel digital) sound than my previous headphone jack stereo setup.

As far as the physical product itself it seems good overall but the wire doesn't seem that sturdy so I'm concerned how long it will last. The adapter does output dolby digital but does not work for my intended purpose so I'll be keeping it but more for "just in case" purposes. This is in no fault of the product now that I did more research on surround sound/dolby digital. The rest of this review is not related to the product but might help others with the same situation.TLDR - To get surround sound on PC games you need to connect via HDMI or if using toslink/optical a sound card that has dolby/dts encodingI want to get surround sound on my computer for gaming but most games that have surround sound don't have dolby digital. Most PC games that have surround from my understanding are PCM/LPCM multi channel and then a small selection that have Dolby Atmos or dolby digital. Toslink only supports stereo PCM or dolby digital/DTS. Audio over HDMI does support multi channel PCM/LPCM but I'm using a DP monitor so connecting HDMI would make my PC see 2 monitors which has its problems. For my use case to get surround sound from PC games via toslink/optical would require a sound card that has dolby digital or DTS encoding.

I bought this for an option into my DAC. Poor quality and didn't reach the 192khz advertised

Excellent construction and does exactly what it says. In the 50+ hours Ive listened to it, it stuttered once or twice but Im not sure I can really blame the device as it could easily have been the computer, and it was only during one listening session. Overall totally satisfied.

I use this from my Macbook Pro to output sound to a Sonos Ray. It works with zero lag, or at least a lag that is so small that I cannot detect it. The only issue is that at first the Mac allowed me to control the volume, then suddenly that stopped working. In general the Mac assumes that with a digital output such as SPDIF, you will control the volume on the output device, so it disables volume controls on the Mac and Mac keyboard. I downloaded and installed a free app called eqMac that restores volume control through the Mac UI and the Mac keyboard. With that app installed the Sonos Ray functions perfectly as speakers for my Mac.

2024-06-08 UPDATETurns out it _can_ produce 5.1: it's Apple MIDI that won't recognize it. Actually any Apple apps.I had to use VLC (free download): in menu bar: Audio > Audio Device > "USB SPDIF Adapter (Encoded Output)".I used this guys test audio files, specifically the `DTS 5.1.wav`: Reddit . /r/hometheater/comments/11qqv95/surround_sound_test_files_in_almost_every_format/ (URLs aren't allowed in reviews...)So, in short, the documentation for the product is horrendous and the compatibility with Mac OS is questionable.From my research, appears as though the only way to get Apple apps (like MIDI) to recognize the distinct speaker channels is to connect HDMI directly to an Audio Receiver. (And this is only for recent Macs; appears as though TOSLINK (optical audio) was better supported in the past.)ORIGINALWill not produce 5.1 from my Macbook Pro M1 2021. I tried a 2015 Macbook Pro, too. I tried three different receivers, all capable of at least DTS 5.1. The Audio Midi app only ever showed 2 channels.