7dayshop Bluetooth Wireless Stereo Audio Receiver - BLUETOOTH ENABLE YOUR HI-FI, SPEAKER DOCK OR CAR STEREO!

Bought this based on price and its good reviews.

It's small, and i like it.

I am a recording engineer of a good few years and have always associated 'wireless audio' and 'bluetooth' with horrific crap sounding mush that you shouldn't waste your time on.

however, having done some simple tests (using a nexus 7 i might add) with a wired connection and then switching to this bluetooth wireless receiver, i couldn't reliably tell the difference between tracks i had personally recorded mixed and mastered.

i also went a bit further and placed a 24bit 48k pink noise .wav file on my N7 and played it and recorded the sound into my laptop with decent quality soundcard attached.

i recorded once through the wired headphone out, then again over bluetooth.

comparing these two 'pink noise' sounds (thats all freqs playing together, sounds nasty but good for testing) and boosting certain freqs with EQ, etc. i couldn't spot any differences. i expected some graviliness up top for example, but not really.

maybe just maybe a tiny bit of roughness around 10k if your volume levels from sending device aren't set up right. i doubt that is reliable to be honest, its so marginal.

this test doesn't check noise-floor, but its minimal to barely noticably unless your hifi is set to crazy loud. not a worry.

from googling the quality is ~ 320-350kbps over A2DP, which effectively is nigh-on CD quality less a few frequencies only 17yr olds and below can hear well..

so don't worry about it, basically!

using this with a nice tablet to select tunes and do other things is total musical jukeboxy freedom.

remember most of the 'i can hear the difference' stuff your expert chums might say is mostly perception/expectation bias, test it properly and most folk won't know imo.

This tiny device lets you play music from an iPhone/iPod or a bluetooth-enabled laptop to a stereo, active speakers, or anything that has an 'AUX IN' connector.

It pairs straight away with both my iPhone and laptop, and lets me play and control music from wherever I want to be. I've just used it to play my music from my IPhone over my camper-van audio system while on holiday for a week, and it worked flawelessly. It was liberating to be able to move about inside and outside the van and be able to skip tracks and change what was playing.

Charging: a One-hour charge with the supplied USB lead lasted for ages - I played music for an hour or so a day for six days.
Sound Quality: Awesome
Build Quality: Very good.
Ergonomics: It's very small and quite fiddly to press the pair/power button, but you don't do this often, so no big problem.
Range: I used it within a 10 metre range with no problems.

This device overcomes the problem that many cars, even if they have bluetooth phone connectivity, won't play mp3s from the phone via bluetooth. By plugging this device into the Aux socket, you can do away with the mini jack cable you would need otherwise. The audio playback quality using this device is very good, in fact I think it might be better than the cable. Setup is very easy, just put it in discover mode and let the phone find it.

For the convenience of not having a lead trailing across the dash, there are some trade-offs. The Aux socket in my car is in the glove-box (why do they do that?) and the device, which is powered by a rechargeable battery, switches itself off when not in use. The connecting lead is very short, so, every time you get in the car, open the glove box, switch it on. This wouldn't be so bad, but the on/off button is tiny, hard to see in the gloom, and has to be held in for what feels like a really long time. If you're holding it the wrong way up and don't see the blue light come on, it's quite easy to put it into discover mode instead.

Since I've had this for a while now, I'm changing part of the review. I've realised it is possible for the phone to use the bluetooth in the car for the voice channel, while also using this for audio. Just need to change the settings on the phone so this device only connects to audio.

I've now got it on an extension lead so it's not in the glovebox, which is a bit better. The only other drawback with it is, when the battery is low it beeps over the audio and you can't charge it while in use, so keep a mini jack lead, or some CDs in the car for backup.

Overall, it's a good solution to the problem and I'd recommend it.