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Alpha Design Labs X1 Portable USB DAC


Product Description

X1 Portable USB DAC

Our pricing for this product is the "MAP Pricing."  This means that the prices shown here are the "minimum advertised prices" permitted by the manufacturer.

Manufacturer's Description:

ADL X1 USB DAC/Heaphone Amp

Great Sound at Home or On the Go

The ADL X1 is a small, discrete, but highly specified DAC/headphone amp with inputs supporting iOS digital at up to 16/48 via APPLE MFI certified USB Cable for iPod, iPhone, iPad devices. The X1 also runs 24/192 S/PDIF with high-resolution files from PC via the PC’s USB output. There’s an analog line-level 4-pin 3.5mm input and a 4-pin 3.5mm output for headphones in the 12~600 ohm range. The 4-pin input supports 3.5mm Remote and Mic Earphones. The 3.5mm TOSLINK optical output delivers SPDIF up to 24/192. There's also a convenient GND TRRS switch making it easy to change from one 4-pin set of 'phones to another.


  • High-performance ESS-ES9023 24bit/192kHz DAC chip
  • Beautifully-finished aluminum and ABS plastic casing.
  • Supports iOS , PCs
  • Fits in the palm of your hand
  • Enjoy music anywhere, on your desk or on the go
  • Doesn’t draw power from connected iDevice battery
  • Headphone and output can connect to home stereo system
  • Line input improves sound of portable analog audio sources
  • Can be switchable to match different smartphone types


24-bit/192kHz XMOS High-performance Streaming Controller supports ASIO and Asynchronous mode
USB 2.0 High Speed compliant & 8/16/32/44.1/48/88.2/96/176.4/192 kHz sampling rates supported
Input phone jack: 3.5mm analog line input (switched)
Output phone jack-1: 3.5mm Headphone or line out
Output phone jack-2: 3.5mm Headphone or 3.5mm Optical Output: For 24/192 SPDIF (Max)
4-layer printed circuit board with copper thickness >1oz (Gold-plated circuitry on the printed circuit board )
USB A socket: For 16/48 iDevices ( iPod/iPhone/iPad )
USB Mini-B socket: For 24/192 PCs runs and recharges via PC's USB or an AC/DC switching power adapter

Max Headphone Output Levels (1%THD 1KHz) :
    40mW(12 ohm)
    65mW(16 ohm)
    100mW(32 ohm)
    107mW(56 ohm)
    36mW(300 ohm)
    19mW(600 ohm)
Channel separation: 60~64dB (1KHz)33ohm , -50dB/<=±3dB
Frequency characteristics: 20Hz~20kHz (±0.5dB)
Total Harmonic Distortion: 
    0.033% (33ohm)
    <0.02% (300ohm) 
    0.0085% (600ohm)/1mW
S/N Ratio: 

Maxim MAX9724C Power IC , Low-RF Direct-Drive Stereo Headphone Amplifier with 1.8V compatible shutdown
TI- LMV832 Dual 3.3 MHz EMI-Hardened Low-Power CMOS OP AMP
Power Supply 1: DC 5V 500mA ~ 2000mA 
Power Supply 2: DC 3.7V 2600 mAh Li-ion rechargeable battery
Charge time: approximately 4~5 hours (AC/DC 5V, 1.0-2.0A switching adaptor)
Charge time: approximately 7 hours (DC 5V , 0.5A USB bus power)
Music Playback Time: Up to 7.5 hours when fully charged
Dimensions: 2.7" x 4.6" x 0.6"
Weight: 5 oz.

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