The Sound Blaster E3 is a headphone amplifier that gives you high audio quality performance with music streaming wirelessly to your smart mobile devices. It supports USB audio streaming from the smart mobile devices as well, providing a higher grade of quality than Bluetooth. Free up your phone. Music is streamed via Bluetooth (without wires) to the Sound Blaster E3. So even if you chuck your phone into your bag, you can control the music playback, as well as the volume, remotely via the Sound Blaster E3. When a phone call comes in, a simple press of a button on the Sound Blaster E3 allows you to answer the call. Awesome! Tired of flat or under powered audio playback from your smart device, while on the go? Attach the Sound Blaster E3, and what you get in return is an increased level of audio detail & resolution previously unreachable by your smart device. Reward your ears with jaw-dropping audio fidelity of 112dB (DAC) Signal-to-Noise Ratio (SNR). In comparison, Compact Discs (CD) has about 98dB .The Sound Blaster E3 is small and light, at only 44 grams. This means it can be easily carried around in a bag or a pocket, or clipped onto clothing. No longer will you have to haul a headphone amplifier the size of a brick to enjoy better audio. Sharing is easy with the Sound Blaster E3 which comes with dual headphone output jacks! Unlike other shared outputs, the Sound Blaster E3 does not compromise on audio fidelity, even when powering two discrete headphone outputs! Sound Blaster E3 performs up to 8-hrs1 per charge via Bluetooth or 17 hours via analog audio playback, so needless to say that should be the last thing you should worry about. The built-in headphone amplifier supports up to 600ohm, so there are no limits to the type of headphones you can pair with the Sound Blaster E3. Plug the Sound Blaster E3 to your PC or MAC via USB connection, and it becomes a high performing portable Digital-Analog Converter (DAC) capable of 112dB (DAC) Signal-to-Noise Ratio (SNR). With SBX Pro Studio technology and connected to PCs and Macs, you can further adjust what you listen, to your individual taste. Connect the Sound Blaster E3 to your PC or Mac, and fire up Sound Blaster E-Series Control Panel. In the SBX Pro Studio menu, enable SBX Surround to adjust the immersion level of surround sound that you really like. You can also increase the other parameters like Bass so your house rumbles. Simply enable SBX Bass and adjust the level and Crossover Frequency as you prefer. The built-in microphone provides the additional benefit of using your normal headphones for conversations over the phone. When connected to PCs and Macs via USB, you can activate the CrystalVoice Technology, a suite of enhancements that reduces noise and provides for clearer conversations. Sound Blaster E3 functions as a portable USB DAC, which means you can connect it to selected smartphones or tablets via USB cable for uncompressed digital audio streaming.