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Astell & Kern

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

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

Product Information

Model: 3PPR419C-CMSIN1 | UPC: 821566018359


What's In The Box

Product Information

Model: 3PPR419C-CMSIN1 | UPC: 821566018359

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

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