Sennheiser's IE range is a earphones for the high-end market, outperforming and out-costing the casual CX lines. The IE 7s are sandwiched between the entry-level IE 6s and the flagship s, and have an SRP of £179.family of
Like each model in the IE range, the 7s fit best over-the-ear, but can be comfortably worn in a more conventional way should your ears ask you to.
As sound-isolating earphones we found them immediately comfortable, and they provide a decent level of sound-isolation. You'll get more noise-blocking from Shure's meaty foam tips, but the pack of silicone and stiff foam tips provided allow you to choose fits and styles that may offer extra isolation in addition to increased comfort. So go ahead and experiment.
Cabling is good, though the lack of an extension cable in the box gave us a feeling of distinct sadness for a few seconds. At one end is a 3.5mm plug, but at the other end -- unlike the flagship IE 8s -- the cable is not detachable from the earphone enclosures for easy future upgrade action.
But those are only very small issues to most people, and indeed to us. What's important is what's on the inside, and how those insides perform. The IE 7s use a single dynamic driver, which Sennheiser chose in order to eliminate distortion it claims occurs in multi-driver models.
Each driver is backed by a neodymium magnet, as seen in many high-end headphones. Together, both diaphragm and magnet co-operate to respond to frequencies between 10Hz-19kHz, with a sensitivity of 120dB/mW and a rated impedance of 16 Ohms, making them ideal, of course, for low power devices like iPods.
Also included in the box is a tool for peeling off the wax that can build up on sound-isolating tips, and a pair of ear hooks for a more secure fit to the ear. As for sonic features, Sennheiser promotes -- in large silver lettering, no less -- that the IE 7s focus on 'lifelike sound'. Let's see.