ADL X1 (Black, Blue, Red, or Silver)


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5.00 out of 5
1 review

Product Description

ADL X1 Portable Headphone  Amplifier for i-device with USB DAC

Headphone listening is an intimate sonic experience and most enthusiasts employ headphone amplifiers and a good pair of ‘phones– like the ADL H118! The headphone amplifier determines the quality of sound in hand with the headphones.

The X1 is small, discrete but highly specified 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 SPDIF 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 USB source signal up to 24/192. There’s a convenient GND TRRS switch making it easy to change from one 4-pin set of ‘phones to another.


  • High-quality volume control and On/Off switch (front)
  • Gold-plated 3.5mm input connector: Analog line input (switched)
  • Gold-plated 3.5mm output connector-1: Headphone or Analog out
  • Gold-plated 3.5mm output connector-2: Headphone / Analog out or 3.5mm optical output for 24/192 (MAX) SPDIF
  • 4-layer gold-plated printed circuit board  with >1oz copper thickness
  • Gold-plated USB A socket for 16/48  iDevices (iPod/iPhone/iPad)
  • Gold-plated USB mini-B connector for 24/192 PC operation
  • Recharges via PC USB connection or AC/DC switching power adapter  (sold separately)
  • Attractive aluminum cover and ABS plastic body
  • Max headphone output at 1%THD @ 1KHz: 34mW(12 ohm), 60mW(16 ohm), 82mW(32 ohm), 86mW(56 ohm), 36mW(300 ohm), 19mW(600 ohm)
  • Channel separation 60~64dB (1KHz) 33ohms -50dB/<=±3dB
  • Frequency characteristics 20Hz~20kHz (±0.5dB)
  • Total Harmonic Distortion 0.033% (33ohms) , <0.02% (300ohms) , 0.0085% (600ohms)/1mW
  • S/N Ratio 95.5dB/32ohms , 98.1dB/56ohms , 101.6dB/300ohms, 102.1dB/600ohms
  • Charge time approximately  4~5 hours (AC/DC 5V, 1.0-2.0A switching adaptor – sold separately)
  • Charge time: approximately  7 hours (DC 5V  0.5A USB bus power)
  • Music playback time up to 7.5 hours when fully charged
  • Dimensions 68 (W) x 118 (D) x 16.5 (H) mm
  • Weight: 147g Approx.



  • 24-bit/192kHz  XMOS High-Performance  Streaming Controller supports ASIO and Asynchronous mode
  • USB 2.0 High Speed (480Mbit/s) compliant  supporting 8/16/32/44.1/48/88.2/96/176.4/192 kHz sampling rates
  • High-performance ESS-ES9023 24-bit/192kHz DAC chip
  • 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

Additional Information

X1 Compatible I Devices

iPhone5 (lightning cable), iPhone4S, iPhone4, iPhone3GS, iPod touch (3rd to 5th gen), iPod nano (5th-7th gen), iPod classic 160G(2009) iPad mini, iPad 2, iPad (3rd gen)


USB mini-B socket for USB A output from PCs and charging battery USB A socket for iDevice output via APPLE MFI-certified USB cable Headphone and Analog out-1 (front) (4-pin) 3.5mm connector for headphones and analog output Headphone and Analog out-2 (rear) (3-pin) combined 3.5mm connector for headphones Line input (4-pin): 3.5mm phone jack for analog input (switched) Mini-optical connector output


Black, Blue, Red, Silver

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1 review for ADL X1 (Black, Blue, Red, or Silver)

    5 out of 5


    I had been looking for a portable audio amp/DAC that accessed the digital files on my iPods rather than simply amplifying the music from their onboard DACs. When I was looking around I also became interested in a small headphone amp/DAC such as a Dragonfly for use with my laptops. On the heels of that I felt it would be great if I could that same DAC as an interface between my computer and home stereo. I thought all this was too much to ask from a single device until I stumbled on ADL’s X1. It covers all those bases and does a remarkable job of each. It drives all my headphones, from efficient in ear monitors to my power hungry over ear HDs. This is a fantastic and flexible headphone amp/DAC, you should try it!

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