To kick it up a notch, the classic R1010BT Bluetooth speakers re-introduces bookshelf speakers in another way. What you get is the high-quality audio performance you'd never expect from such a compact design. Housed in medium-density fiberboard (MDF), this R1010BT is the revisitation of another Edifier classic. Featuring perfect bass drivers and silk-diaphragm tweeter drivers, the R1010BT Bluetooth bookshelf speaker is engineered to deliver commanding sound with subtlety and details. Dual integrated line-in jacks for connection to other analog audio devices, saving you the trouble of plugging in and pulling out. The tone control encompasses bass and volume together with the dynamic treble enhancement on port A which is dedicated to catering to your playback preference. For a personalized listening experience, you'll find the bass and volume adjustment dials at the back of this bookshelf speaker. The R1010BT Bluetooth bookshelf speakers also feature dual stereo line-in ports.