Ini­tial Impres­sions
As I’ve never used Blue­tooth head­phones before, it was a very lib­er­at­ing expe­ri­ence to use the Sennheiser PXC 310 BT.  And these head­phones can and do per­form on par with wired audio­phile head­phones.   Plus I really liked the size, weight, and design of these headphones.

The Sound: 9/10
I only have praise for the sound qual­ity of these blue­tooth head­phones.  It’s like lis­ten­ing to a reg­u­lar pair of audio­phile head­phones san wires.   I really enjoyed the PXC 310 BT for it’s rich bass and well defined mids and highs.   From rock to clas­sic, these head­phones will make you happy.   The sound stage (the sen­sa­tion of lis­ten­ing to the music as if you’re right there) was also pretty good.

The Looks: 9 / 10
I love the com­pact design and matte fin­ish of the PXC 310 BT.  With some head­phones your head lit­er­ally gets lost in the size and design and you feel embar­rassed to even wear them out.  But the PXC 310 BT looks svelte and fash­ion­able enough that a man or a women would look good wear­ing them.  On the left side of the head­phones you have the Sennheiser logo and on the right, you have a set of con­trols; vol­ume up/down, play/pause, fast forward/rewind, a Blue­tooth, and a Noise­Guard but­ton.   The cen­tre of the con­trol has a blue light that blinks inter­mit­tently every 4 sec­ond.  This can be dis­tract­ing for the peo­ple around you on an air­plane.  How­ever, there is a way to turn off this fac­tory set­ting (I don’t think peo­ple read the man­ual as a result have false infor­ma­tion about this).  Down­load the man­ual below and read page 14.

Func­tion 9.5 / 10
Great for peo­ple on the move or at home doing house chores.  Fly­ing, train rides, com­mut­ing, or for work­out these head­phones are magic.  I didn’t use them for fly­ing, but I used these head­phones for sub­way rides and for work­ing out.  While at the gym, I didn’t have to worry about wires get­ting in the way, espe­cially lift­ing weights.  Plus I didn’t have to keep my iPhone in my pocket (I left it near the machines).  At home I was able to roam around the house at a 10m dis­tance so I was groov­ing to my music while clean­ing the dishes, going to the bath­room (it’s fan­tas­tic) etc..  At work, I was able to get around 15m before the music started to cut out.

Boom for the Buck Rat­ing: 7/10
As these head­phones are a bit pricey I can only give it a 7.  But if you’re look­ing for a pair of head­phones with packed fea­tures, superb sound qual­ity, and money to spare, then the PXC 310 BT is the per­fect choice for you.

Total: 34.5 / 40
Pros: wire­less, great sound, small com­pact design
Cons: price, slightly uncom­fort­able around the ears when you wear them with your glasses, if you like blast­ing your music really loud then you won’t be happy the deci­bel level.

Tech­ni­cal Tid­bits:
For this review I had to include this addi­tional sec­tion as the PXC 310 BT is packed with func­tions.  Aside from being a Blue­tooth head­phone, the PXC 310 BT also has NoiseGard™ and Talk­Trough functions.

NoiseGard™ is a active noise can­cel­la­tion func­tion that is used to drown out con­tin­u­ous low fre­quen­cies.  So if you’re on a plane or a bus it drowns out the hum­ming exter­nal sound of your sur­round­ings.  To acti­vate it you press the NoiseGard™ but­ton for 2 sec­onds.  As this was the first time using active noise can­cel­la­tion head­phones, I was curi­ous as to how well the fea­ture would work in real life. I was a bit under­whelmed (noise can­cel­la­tion doesn’t block out high or erratic sound fre­quen­cies).  I could still hear the loud music at the gym and screech­ing of the sub­way tracks.  I think noise iso­la­tion IEMs by Shure or Klip­sch do a bet­ter job of block­ing out exter­nal noise.

Talk­Through is a a use­ful func­tion as an exter­nal mic picks up any sound and trans­mits it to your ears.  Press­ing the Talk­Through but­ton allows you to carry a con­ver­sa­tion with­out remov­ing your head­phones.  When you press the but­ton again you can get back to your music (doesn’t pause the music).

The con­trols on the right side of the head­phones help you to manip­u­late the vol­ume, play/pause, and fast forward/rewind.  All the con­trols worked per­fectly on my 2010 mac­book pro and iPhone 4.
– The poly­mer lithium ion bat­tery was fully charged within 3 hours and I got a day of heavy usage out of it (around 10h).
– You can use the Blue­tooth don­gle: Sennheiser BTD300 Audio, or BTD 300i for apt-x codec (high qual­ity sound and improved latency).
– BTD 300 Audio has ver­sa­til­ity of con­nect­ing it to your com­puter, TV, and music devices with­out Blue­tooth con­nec­tiv­ity or apt-x sup­port, but you can ONLY con­trol the vol­ume level with your head­phones.
– If you have newer macs with OSX ver. 10.6.5 and up then apt-x is natively sup­ported (don’t quote me on this one)
– I paired the head­phones with my iPhone 4 (iOS 4.3.3) and all the con­trols were func­tional with apt-x sup­port (as far as my ears could tell)
– Android users with A2DP blue­tooth sup­port should also be able to pair the head­phones.
– If the bat­tery runs out, you can attach the pro­vided cables to to use it as a nor­mal head­phone with­out Blue­tooth or NoiseGard™ func­tions.
– For Win­dows 7 users (or Par­al­lels dual boot), install Win­dows 7 Blue­tooth dri­ver.  I was able to pair the head­phones using Aspire blue­tooth dri­vers.
– Down­load the PXC_310_BT_manual