iBasso D2+ Boa Description iBasso D2+ Boa portable headphone amplifier and USB fed Digital to Analogue Convertor (DAC) in silver. Get the maximum from your portable audio listening with the iBasso D2+ Boa.
This unit is the iBasso D2+ with line out analogue audio connection, meaning it can be used as a standalone USB DAC. For example you can use the D2+ to stream music from a PC (via USB) and feed powered speakers via the D2+ line out socket.
You'll never want to listen to your headphones without one again
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Now there's no need to compromise when listening on the move with your iPod or computer. With the iBasso D2+ Boa you can bypass the noisy headphone output on your iPod or computer and feed your headphones with a crystal clear audio signal.
The headphone output on many portable devices, such as the Apple iPod and many laptop computers, is noisy and introduces distortion to the audio signal. With a dedicated DAC and headphone amplifier combination, like the iBasso D2+ Boa, you can bypass the standard headphone jack on your iPod or laptop and enjoy distortion free audio.
iBasso D2+ Reviews TrustedReviews.com - Awarded 'TrustedReviews Recommended' Seal
"The results I had with full-sized phones and the line-out on an iPod Touch were actually quite amazing"
"The fact is, once you've got used to listening to a decent pair of headphones through the D2, it's very hard to go back.
"A great sounding portable headphone amp that doubles as an outboard DAC for PC listening. Try it with the right cans, and you'll never want to listen to your headphones without one out again"
CNET Review of iBasso D2 - Impressive
"The resulting sound from the D2 is beautiful - crisp, controlled and powerful. The D2 deepened and smoothed out the bass, gave vocals a significantly richer, velvety-smooth quality and extended the high-end."
What HiFi? Review of iBasso D2 - Very Good
"The D2 adds greater weight to low frequencies while bringing more detail and verve to the midrange."
Additional Information What is a DAC? A Digital to Analogue Converter takes a pure digital audio feed (in this case from a computer) and converts it into an analogue signal that can be amplified.
Every computer soundcard with a headphone or line level output has a DAC onboard, but in many cases is very poor quality. The iBasso D2+ Boa upgrades your portable audio system in one step.
The iBasso D2+ Boa combines a high quality DAC and headphone amplifier in one unit, giving you the ultimate portable audio setup.
Why use a headphone amp? A headphone amplifier takes a line level signal and allows you to drive headphones with it. Normally a line level signal would not be powerful enough to drive headphones without amplification.
You can use a headphone amplifier to drive your headphones from many audio sources, such as CD players and portable audio players like the iPod (dock connector cable required).
iBasso D2 with iTouch, Sennheiser HD650 and Line Out Dock Cable
Avoid the iPod Headphone Jack With the iBasso D2+ there is no need to restrict yourself to listening through the standard noisy headphone output of your iPod or audio source.
The dock connector on the humble iPod includes a high quality line level output, meant for connecting the iPod to a HiFi via an iPod dock. With a simple dock connector audio cable it's possible to feed a portable headphone amplifier with a clean line level audio signal, bypassing the headphone output completely.
iBasso D2+ Boa Specification Wolfson WM8740 DAC Chip + TI PCM2706 USB signal input, provides I2S interface for decoding Works as a DAC+Headphone Amp Combo or a standalone Headphone Amp 2-Setting Gain Switch for impedance matching High quality ALPs volume control potentiometer. 470mAh rechargeable Li-polymer battery with integrated charging system Frequency Response: 17Hz - 20Khz +/- 5dB (DAC), 17Hz - 100Khz -0.5dB (Amp) Signal to Noise Ration: 97dB (DAC), 104dB (Amp) Crosstalk: 93dB (DAC), 101dB (Amp) Total Harmonic Distortion: 0.006% @ 1kHz/0dB (DAC), 0.009%@ 1Khz/0dB (Amp) Output Power: Upto 100mW+100Mw into 32 Ohms Gain: +3dB/+10dB (Amp) External PSU: 5V Estimated Battery Life: 38 hours Battery Charge Time: 3 hours Size: 51x21x82mm Weight: 108g Package Includes iBasso D2+ 'Boa' headphone amplifier and DAC Leather pouch USB cable 
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