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Meanwhile, the mange-tout shaped receiver module is designed to fit round the back of the neck and the short cables to the earpieces run up and over your ears. The cables can also be worn hanging straight down from the earpieces but this is less comfortable and not very secure. The length of the cables can then be adjusted by making a loop out of the excess and pushing it through the gap in the receiver (this isn't some botch job method we made up; it's designed to do this).
Overall, the receiver is surprisingly comfortable and feels incredibly light. We had no problems using it for an entire day at work or for extended sessions at the gym, where we found the lack of cables a particular bonus. That said, exercising that jolts you around, like running and aerobics, did tend to work the phones loose after a while.
This is one area that, perhaps, could have been improved if Sleek Audio had included some alternative tips to the double-flanged silicone ones that come with the SA6s. This was something that we cited as a problem in our original review of those headphones and the omission is even more apparent here. You can buy alternative soft foam tips made by Comply, but we didn't get a chance to test these so can't vouch for how they perform - though both Comply's own NR-10 headphones and the Philips SHE9850 use Comply tips and they impressed us.
When you receive the adapter, the transmitter and receiver are already synced but if they somehow lose sync or you want to synchronise more receivers there's a quick and simple procedure for doing so, which is clearly explained in the manual. Otherwise, it's just a case of holding down the power buttons for a couple of seconds each time you want to turn them on - they turn off automatically once music stops playing (in this standby state the batteries will last around 7 days).
Both modules are charged via microUSB and a USB to twin-microUSB cable is provided for doing this. Next to the charging sockets are tiny switches for properly turning the modules off to save battery life (the batteries will still naturally drain down over a period of about three months).
A foam pouch comes in the box, which can be used for storing the adapter, phones, spare cable, and any other bits and bobs you may want to keep with you. We appreciate that Sleek Audio has heeded our advice on the overly complicated case that originally came with the SA6 headphones and has gone for something simpler this time. However, I can't help think the pendulum has swung a little too far the other way. Considering the fairly premium price of this product, I'd hope to get a pouch that at least zips shut, so I can be sure I don' lose any bits (Shure's semi hard case is a good example).