The newest pair of high-end in-ear headphones from Sleek Audio are in the works, as press-shots surfaced on the internet. The SA7 features a wicked-looking design that focuses on materials and performance. The SA7 has a double-balanced armature design. Its housing is made with a single block of aluminum by a military metals developer, with carbon-fiber shell plating. It comes with a detachable cable. Durability turned out to be less than ideal with the SA6s and this time around it seems they have taken proper precautions to avoid the issues with the old design. The treble port is now effectively the same as that of the SA1s which is made from metal and screws on the body, and since the body is made out of one piece of aluminum we think this set will be very though. Lurking in the background is the new and improved Kleer wireless system which is rumored to cost around $100. So far the pricing of the SA7 is not final yet, but it is expected be somewhere between $350 to $400.