After years of hoping for a true revolutionary IEM, Shure finally answers the users' demand by announcing the latest addition of the SE series - the new SE846 has 4 BA drivers: dual bass, one mid and one treble unit in a 3 ways configuration. It also has exchangeable filter to tune the sound between 'balance', 'bright' and 'warm'. It will come with a fully transparent housing so you can admire its engineering wonder. The price tag is equally stunning, estimated to be around US$1k. One thing to note is that it is only 9 ohm in impedance, so it will likely be quite demanding on the source. But if you have $1k budget for IEM, surely a good source shouldn't be a problem at all.