【新品】Audioengine D3 Premium 24-bit DAC

越來越多類似的產品了
USD 189

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Features

Portable USB audio converter for Mac or PC
Stream bit-perfect native 24/96 HD audio
High-performance headphone amp included
Plug-and-play, no drivers or software to install
Connect headphones or any music system
Easily drives low impedance headphones
Computer OS volume control
Asynchronous data transfer with dual master clocks
HD indicator for sample rates above 48K
Metal injection molded (MIM) aluminum case
Works with

Any computer, Mac or PC
Headphones
Powered speakers
Any music system with audio inputs (RCA or minijack)
What’s in the box

D3 DAC
Carry case
1/4” headphone adapter cable
Setup guide
Product line brochure

Full-scale output

2.0V RMS Frequency response

10Hz - 25kHz (+/- 0.5dB) SNR (DC to 20kHz)

110dB THD+N (1kHz FS 96 kS/s)

<0.002% Crosstalk

-110dB USB transfer mode

Asynchronous (dual clock) USB device class

Type 1.1 or above Input

USB Audio Input bit depth

up to 24 bits (upsampled) Input data rate

up to 192KS/s (96K native) Output

Analog audio minijack Output impedance

10 ohms Suggested headphone impedance

12 ohms to 10Kohms Headphone amplifier

LME49726 D/A converter

AKM4396 USB controller

TI1020B Power requirement

USB 5V DC, 200mA USB power filtering

2-stage redundant regulation Product dimensions

19x12x6mm (including USB connector) Shipping weight

1.0lbs (0.5kg) Environmental

Operating Temperature: 32 to 95 degrees F
Non-operating Temp: -4 to 113 degrees F
Relative Humidity: 5% to 95% non-condensing
Included accessories

1/8" to 1/4” adapter cable
Product case
Setup guide
D3 Internal Converter

The heart of the D3 is the AK4396 DAC, well regarded for its low noise and high fidelity. Due to the high signal-to-noise specs of the AK4396 and the added benefit of double redundancy power source conversion and filtering, the D3 presents impressive low noise and low distortion characteristics. The D3 can process digital audio at any bit depth up to 24 bits and any sample rate up to 192kHz. D3 pads (upsamples) all bit depths internally to 24 bits, thus achieving a higher signal-to-noise ratio.
D3 Headphone Amplifier

The D3 contains a high-performance headphone amplifier based on the LME49726 low-noise opamp. This amp is able to provide low-impedance, high-fidelity audio and a 2-volt output which easily drives a wide range of headphones, including headphones with impedances as low as 12 ohms. The D3’s relay-controlled stereo outputs can also be connected to any system with an analog audio input, such as Audioengine powered speakers, for example.
D3 Power

The D3 is powered directly from the USB bus and power is passed through two stages of regulation to ensure no USB bus power variations affect the audio quality. This low-noise, low-ripple power supply is located on a separate circuit board for extra isolation and thermal management.
D3 Volume Control

Volume is controlled from the computer’s OS and is implemented in the D3 as a digitally-controlled analog volume control.


http://audioengineusa.com/Store/D3-24-Bit-DAC