Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier
Astell&Kern ACRO CA1000 - Portable headphone amplifier

Astell&Kern ACRO CA1000 - Portable headphone amplifier

CHF 1,990.00 Normal price CHF 2,390.00

Delivery time: Available from stock

Powerful Audio Anywhere

Introducing the Astell&Kern CA1000 Portable Headphone Amplifier.
ACRO CA1000 is a headphone amplifier that combines the features and portability of a high-performance amplifier and a DAP. It is based on Astell&Kern's fundamental philosophy of delivering original sound.

Setting a new standard for headphone amplifiers, the ACRO CA1000 offers powerful and clear sound with features unavailable in any other headphone amplifier.

  • Perfect control of any headphone/IEM with 4 gain levels and up to 15Vrms output power
  • Multiple inputs and outputs provide maximum options and compatibility with all your audio devices
  • Equipped with ESS ES9068AS Quad DAC for detailed and balanced sound
  • Support for 32bit/384kHz PCM and Native DSD512 playback
  • Built-in rechargeable battery - the portable amplifier can work without external power supply


Headfonia Reviews - Quality audio reviews

"It's just about the most “complete” end-to-end product on the market in terms of having a source, DAC, amp, and interface combined in the one good-looking and great-to-interact with device - it's very much more than the sum of its parts if you're a full-sized headphone user and the idea of ​​having a source attached to your headphone amp sounds appealing, the ACRO CA1000 has enough genuine driving power to make it a viable desktop amp contender – it's the real deal."

Astell&Kern ACRO CA1000 review - Headfonia Reviews

"The Acro CA1000 is one of a kind. It combines two audiophile experiences and molds them together into one device. This works to A&K's success, as it delivers exceptional performance both sonically and in terms of user experience."

Astell & Kern ACRO CA1000 Review - Major HiFi

TERATON ALPHA, the epitome of Astell&Kern audio technology

  • Crossfeed support for a more natural sound experience with headphones
  • Support for the latest Bluetooth 5.0 and 24-bit wireless codecs (Qualcomm® aptX™ HD, LDAC)
  • Dual-band Wi-Fi support for better wireless connectivity
  • ReplayGain for automatically adjusting the volume for different music titles
  • Silver plating shield to minimize noise and interference
  • With a display that can be adjusted up to 60 degrees, you can view your screen anywhere

Perfect driver for any headphone/IEM with 4 gain stages and up to 15Vrms output

In order to perfectly drive even the most demanding headphones, a device must be able to deliver an output that corresponds to the characteristics of the headphones.
The ACRO CA1000 supports 4 gain stages, so that almost every existing headphone can be optimally driven

The gain adjustment circuit implemented in the CA1000 can even drive high-impedance headphones without the sound quality being compromised by a maximum output power of 15Vrms.

The ACRO CA1000 unlocks the potential of headphones for a comprehensive sound experience.

Supports a wide range of inputs/outputs

The ACRO CA1000 features a variety of outputs that can be used by general users to audiophiles.

3.5mm, 6.35mm unbalanced, 2.5mm and 4.4mm balanced output jacks are available to connect a variety of headphones/earphones

The ACRO CA1000 can be used as a Hi-Fi audio system by connecting devices via a variety of digital inputs/outputs (optical, coaxial, Type-C USB) and analogue inputs/outputs (RCA).

All inputs -/Output settings can be easily and conveniently selected via the CA1000's touchscreen.

*There is a risk of headphone/earphone and hearing damage at high volume levels when used with headphones/earphones, so the gain level should be adjusted before the use.
*When two or more headphones are connected to the output, the sound is output from the last connected headphone.

Quad DAC with high output power and noise-free sound

ACRO CA1000 is equipped with four ES9068AS DACs, which provide perfect decoding capabilities with Astell&Kern amplifier circuit technology.
The clear and stunning output reproduces the original sound without distortion.
The 2.5mm, 3.5mm, 4.4mm and 6.35mm output circuits are physically separated through the use of tiny, independent relay components.

When the signal from each output stage of a high performance headphone amplifier is not correct blocked, noise interference may occur. The ACRO CA1000 provides noise-free output with an independent circuit structure by using relays to completely block unused ports.

32bit/384kHz, native DSD512 support

The ACRO CA1000 offers first-class sound with proven technology from Astell&Kern.

Thanks to support for native DSD512 and 32bit/384kHz PCM playback, you can enjoy your favorite music to your heart's content.

Bit-to-bit playback is possible up to 32-bit/384kHz PCM and 22.4MHz native DSD, so even the smallest details the artist wanted to express in the music can be heard without distortion.

Premium sound anywhere

The ACRO CA1000 features a powerful output with various input and output options that can only be found in a stationary headphone amplifier.

A portable amplifier that can be operated without an external power source offers a higher Benefits than existing products.

A headphone amplifier should be able to deliver perfectly noise-free sound for a longer period of time.

The ACRO CA1000 comes with a large 8,400 mAh battery capacity that delivers clear, distortion-free top-class sound without the need for a separate power connection.

In order to solve the problem of relatively short playback time due to the small size and high output power, all parts related to power consumption and the circuit were studied revised several times. The result is more than 10 hours of continuous playback.

Thanks to the excellent sound reproduction of the Astell&Kern ACRO CA1000, you can hear the full, original sound of your music anywhere.

* MUSIC: FLAC, 16bit , 44.1kHz, unbalanced, Vol.40, LCD off, low gain
* Playback time may vary depending on user environment.

Faster charging with USB PD 2.0 support

ACRO CA1000 has USB PD 2.0 charging function that supports 9V/3A for faster charging.

Combined with a USB-C adapter that supports USB PD 2.0 fast charging, ACRO CA1000 can be charged to 50% in one hour,
and fully charged in about 2 hours and 30 minutes.

* Charge times were measured using a 9V, 3A adapter while the CA1000 was off

Astell&Kern audio technology forms the TERATON ALPHA sound solution


TERATON ALPHA is AK's ultimate sound solution, providing faithful audio reproduction through the audio output interface through effective noise reduction, efficient power management and amplification with minimal distortion.

TERATON ALPHA features Astell&Kern's patented technologies that The result of tens of thousands of hours of continuous research and development to produce a sound that closely resembles the original sound intended by the artist and producer.

Speaker effect when listening through headphones


In a headphone environment where the left and right channels are clearly separated, prolonged listening can tire the ears.
The moment you turn on crossfeed, the experience of sharp but pleasant sound begins .

Crossfeed mixes parts of the original signal from one channel and sends this signal with a time delay to the opposite channel to center the sound image.

Using detailed settings such as shelf cutoff, shelf gain and mixer level, you can adjust the crossfeed level according to your listening preferences.

Equipped with Bluetooth 5.0 and support for wireless 24-bit aptX-HD, LDAC codecs

The latest Bluetooth version offers high sound quality with the convenience of wireless playback via headphones and IEMs.
Bluetooth 5.0 offers faster transmission speed, longer range and more stable wireless connection compared to Bluetooth 4.2.

Both LDAC and aptX HD are supported to provide audiophiles with the best possible wireless sound.

Wireless Hi-Fi sound through BT Sink

The newly introduced BT Sink function connects the CA1000 to an external device via Bluetooth, similar to connecting a smartphone to a BT speaker. Music from an external device such as a smartphone can now be played in high quality on the CA1000 via the BT Sink function.

ReplayGain adjusts the playback volume automatically and evenly


ReplayGain, which adjusts sound sources with different volumes to an identical level. Now enjoy your own playlists seamlessly with the CA1000's ReplayGain feature.

  • ReplayGain supports audio sources up to 24bit/192kHz.

Silver-plated shielding can

Astell&Kern products use shielding cans so that noise and electromagnetic interference generated during the operation of the myriad parts does not affect the audio block.

The CA1000 takes this a step further by replacing the existing shielding cans with a highly conductive, high-purity silver coating for perfect shielding and excellent audio performance.

AK File Drop for wireless transfers

The new AK File Drop function of the CA1000 makes transferring files easier and more convenient.

With AK File Drop, you can wirelessly transfer files via a PC, a smartphone or an FTP program located in the same network.
Music file management is now possible with a wireless, wireless solution.