Cubetek 3 in 1 LCD Display V5.0 Bluetooth Transmitter Receiver, Bypass Audio Adapter with Aux, Optical, Dual Link Support for TV, Home Stereo, PC, Headphones, Speakers, Model: CB-BT27

Optic. Connection with adaptor my aim. It working superbly more than my exoectation. I have a super human support from backend which is rear to find from other manufacturer or seller. Here is you relay on🙏 product & service both fully satisfaction. I strongly recommended buy this product you never regret👏👍👏👍🙏🌹. Hope to continue good service year to come🫡Installation... Simple procedure... Valume control. Easy, signal quality super.. Battery instant working, value foe money.. Absolutely... Yes...volume control works great👌

Very good product , audio quality is good,ease installation, Bluetooth connectivity is very good overall good device, simple mistake usb port for pendrive place.Iam satisfied.Thank you Amazon

My sonos 1st gen playbar only has optical out and wifi. No airplay no Bluetooth and this device works wonderfully with playbar. Now i can connect via bluetooth and listen songs on youtube seamlessly.

Don't know why such useless products are made. Product review videos also appear to be fake. There are multiple issues. 1. When we request replacement now a days they take about 2 weeks in sending replacement so your money remains blocked with them, this is my complaint to Amazon. Due to this many customers will get shiftted the other online market places. 2. This product doesn't have any inbuilt power source like battery so every time it has to search for the Bluetooth devices and connection too breaks frequently, this is painful 3. If atall it gets connected to two devices there remains a great lag even in between the two connected devices, this is irritating. 3. The volume levels in two connected devices also is varried and when we attempt to change volume level of one device the volume level of the other device also considerably changes. In short this Bluetooth device is not usable at all. This is a true feedback after attempting to use two devices because I received my replacement after about 2 weeks. Thanks that now Amazon has accepted the return. I would Once again request Amazon to please stop this newly started practice of sending the new purchase the very next day and sending replacement after 2 weeks and thus keeping our money blocked. This product is not of any use.

Very useful

Bluetooth Coverage is very good but Some disturbance/noise in audio , some hum Noise

I got this to add-on to a high-end system, which traditionally doesn't have the facility. However it's often requested when guests come over. I was using a Phoenix transreceiver, but the constant need of charging and the single indicator LED made it difficult to integrate into this kind of application. The optical out is connected to a dual ESS9028 DAC, and the device used for transmission is the iPad Air.This lacks a battery, which is a big differentiator. This means it is not exactly portable, and the form factor reinforces that 'feature'. It is intended to be a desktop unit, and it comes with a reasonable set of cables. The quality of the included cables is quite poor, so it's best to use something else.Compared to the direct input from USB, the overall sound is poorer, with a shrunken soundstage and coarse vocals and treble. Still, this is being used in a high-end system - I suspect with many lesser speaker/amp/DACs it will be acceptable. At maximum output, the level is about 1-2dB lower than a direct USB connection to the DAC.It is around the same as my Signature Acoustics unit, which is 1/3rd the size but uses a battery, and doesn't have a volume control or the bypass feature, or the nice display which is handy if you are close by.The bypass is one of the highlights of this device, it basically connects the two optical ports together in passthrough, and allows you to use both BT and another optical source/receiver - though only either can be used at a time.The build quality is average. It is lightweight enough that a set of decent cables will tip it over backwards, hence the thin cables supplied. The onboard volume control is nice, if a bit redundant given everybody uses their handheld or other device to control volume (I use the DAC remote). It also has only 16 clicks, so the control will be very coarse. The display has no spelling errors and while the resolution is low, it is sufficient for the tasks.Overall, it's quite expensive but is more kitted out than similar devices. The sound quality limitations of BT transmission (compulsory resampling and lossy compression, among others) cannot be overcome even with the fanciest devices and protocols, so I'd rank it close to the top of what you can get as an add-on for a hifi system. For more 'normal' usage, there are cheaper options available.

Good product