Astell & Kern Acro CA1000 Portable Headphone Amplifier & DAC (Moon Silver)

$2,199.00 OR

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Model: 3PPR419C-CMSIN1 UPC: 821566018359 Item: 177430

Product Information

Powerful Audio Anywhere

Introducing the Astell&Kern CA1000 Portable Headphone Amp.

The ACRO CA1000 is a headphone amplifier that combines the functions and portability of a high-performance amplifier and DAP based on Astell&Kern's fundamental philosophy of delivering original sound. It sets a new standard for headphone amplifiers, providing a powerful and clear sound with the features never available on any other headphone amplifiers.


  • Perfectly drive any headphone/IEM with 4 levels of gain and up to 15Vrms output
  • Multiple inputs and outputs provide maximum options and compatibility with all of your audio equipment
  • Equipped with ESS ES9068AS Quad-DAC for detailed and balanced sound
  • Support for 32bit/384kHz PCM and Native DSD512 playback
  • Built-in Battery- Portable amplifier can operate without external power supply
  • TERATON ALPHA, the epitome of Astell&Kern audio technology
  • Crossfeed support for a more natural acoustic experience with headphones
  • Support for the latest Bluetooth 5.0 and wireless 24-bit codecs (Qualcomm® aptX™ HD, LDAC)
  • Dual-Band Wi-Fi support for greater wireless connectivity
  • ReplayGain that automatically adjusts sound levels across different music tracks
  • Silver Plating Shield to minimize noise and interference
  • View your screen anywhere with a display adjustable up to 60 degrees



General Specifications

  • Model: ACRO CA1000
  • Body Color: Moon Silver
  • Body Material: Aluminum
  • Display: 4.1" x 720" x 1280" touch screen
  • Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
  • Sample Rate:
    • PCM: 8kHz ~ 384kHz (8/16/24/32bits per Sample)
    • DSD Native: DSD64(1bit 2.8MHz), Stereo DSD128(1bit 5.6MHz), Stereo
    • DSD256(1bit 11.2MHz), DSD512(1bit, 22.4MHz) Stereo
  • Output Level (Headphone Out)
    • [Low] Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load)
    • [Mid] Unbalanced 4Vrms / Balanced 8Vrms (Condition No Load)
    • [High] Unbalanced 6Vrms / Balanced 12Vrms (Condition No Load)
    • [Super] Unbalanced 8Vrms / Balanced 15Vrms (Condition No Load)
  • Output Level (RCA Out): 2Vrms (Condition No Load)
  • CPU: Quad-core
  • DAC: ESS ES9068AS x4 (Quad-DAC)
  • Decoding: Support up to 32bit / 384kHz Bit-to-Bit playback
  • Headphone Outputs
    • Unbalanced (3.5mm, 6.35mm)
    • Balanced (2.5mm, 4.4mm)
  • Analog Inputs Outputs
    • RCA (Stereo pair) x1
    • RCA (Stereo pair) x1
  • Digital Inputs Outputs
    • Coaxial x1, Optical x1, USB(Type-C) x1
    • Optical(3.5mm) x1, USB(Type-C) x1
  • Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
  • Bluetooth: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)
  • Dimensions (W x H x D): 4.12" x 1.77" x 5.85"
  • Weight: about 32.41oz (919g)
  • Feature Enhancements: Firmware upgrade supported (OTA)
  • Operating Temperature: 0°C ~ + 40°C (32°F ~ 104°F)

Audio Specifications

  • Frequency Response
    • ±0.024dB (Condition : 20Hz~20kHz) Unbalanced / ±0.018dB (Condition : 20Hz~20kHz) Balanced /
    • ±0.048dB (Condition : 20Hz~20kHz) RCA
    • ±0.059dB (Condition : 20Hz~70kHz) Unbalanced / ±0.056dB (Condition : 20Hz~70kHz) Balanced /
    • ±0.048dB (Condition : 20Hz~70kHz) RCA
  • S/N: 107dB @ 1kHz, Unbalanced / 115dB @ 1kHz, Balanced / 119dB @ 1kHz, RCA
  • Crosstalk: -105dB @ 1kHz, Unbalanced / -124dB @ 1kHz, Balanced / -121dB @ 1kHz, RCA
  • THD+N: 0.005% @ 1kHz, Unbalanced / 0.002% @ 1kHz, Balanced / 0.0004% @ 1kHz, RCA
  • IMD SMPTE: 0.0008% 800Hz 10kHz (4:1) Unbalanced / 0.0004% 800Hz 10kHz (4:1) Balanced / 0.0003% 800Hz 10kHz (4:1) RCA
  • Output Impedance: 3.5mm, 6.35mm (1ohm), 2.5mm, 4.4mm (2ohm), RCA (2ohm)

Clock Source

  • Clock Jitter: 25ps (Typ)
  • Reference Clock Jitter: 70ps


  • Built-in Memory: 256GN [NAND]
  • External Memory: microSD x1 (Max. 1TB)


  • Capacity: 8,400mAh 3.8V Li-Polymer
  • Charge Time: about 2.5 hours (9V / 3A PD2.0 Fast Charging) / 7 hours (5V 2A General Charging)
  • Playback Time: about 10.5 hours (Standard: FLAC, 16bit, 44.1kHz, Unbalanced, Vol.40, LCD Off, Low Gain)


  • Supported OS: Windows 7,8,10 (32/64bit), MAC OS X 10.7, and up



What's in the Box

What's in the Box

  • Acro CA1000
  • Protective Film
  • USB Type-C Cable
  • Quick Start Guide
  • Warranty Card


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Whats the point of this in terms of the A&K lineup? Is there any advantage to using it with one of the A&K DAPs?
A shopper on Feb 14, 2023
  Thank you for your inquiry. The CA1000 design, features, and performance provide the highest level of sound with many DAPs with lesser DACs and headphone amp capabilities.