Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes
Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes

Astell&Kern ACRO CA1000T - Portable headphone amplifier with tubes

CHF 2,499.00

Pre-order. Available from February 2023

All-In-One Head-Fi Audio System, ACRO CA1000T

ACRO CA1000T is an all-in-one head-fi audio system designed for those who want to enjoy the best sound anywhere.

ACRO CA1000T is a multifunctional device that combines ultra-high quality sound sources playback and offers various input/output options for the perfect desktop companion. Equipped with a powerful headphone amplifier and TERATON ALPHA technology developed by Astell&Kern, it is a versatile option for the home or office. It offers ultra-high sound quality everywhere with optimal battery performance and does not require a connection to the mains.

Complete the head-fi audio system of your dreams with just one ACRO CA1000T, thanks to its triple-amp system with two tubes, four stages of gain capable of handling even the most detailed IEMs and hard-to-drive headphones, and the flagship ES9039MPRO Dual DAC from ESS Technology delivers real Astell&Kern sound.

  • Equipped with a ES9039MPRO dual DAC for the first time!
  • Perfect driver for any headphone/IEM with 4 gain levels and up to 15Vrms output voltage
  • Triple amplifier system with a double vacuum tube for hybrid sound options
  • Multiple inputs and outputs provide maximum options and compatibility
  • Built-in rechargeable battery for portability and optimal power supply

Convenient, High-Quality Head-Fi Sound

The ACRO CA1000T pushes the boundaries of a stationary headphone amplifier with its ideal head-fi audio system that can be placed anywhere and runs independently of its internal battery supply.

The ACRO CA1000T offers thanks to its built-in high-performance headphone amplifier , which does not require connection to other devices, detailed headphone sound.

It is an all-in-one head-fi audio system that offers excellent connectivity with external audio devices and speakers thanks to its multiple input/output ports , so you can easily enjoy network audio playback and music streaming.

Extensive input/output options

The ACRO CA1000T offers a wide range of input and output options to meet the needs of audiophiles looking to build their ideal head-fi system with maximum utility.

For ease of use, you can change the input/output settings using the touch screen on the top of the device while multiple cables and devices are connected.

1. 3.5mm & 6.35mm unbalanced, 2.5mm & 4.4mm balanced outputs

The output on the front of the unit is compatible with a range of sizes, so different headphones and IEMs can be connected, including both low-impedance and high-impedance variants. The 3.5mm port can also be used as an optical output.

Enjoy powerful output and dual-tube sound with any device of your choice.

2 . Mini XLR, RCA Output

Balanced mini XLR and unbalanced RCA output with circuitry that minimizes noise and distortion, provide the best sound to the amplifier and external audio devices through the line out , so that both powered speakers and desktop head-fi sound environment can be supported effortlessly.

3.4.4mm, coaxial and optical input

ACRO CA1000T can receive signals from various external devices through its coaxial and optical digital inputs, as well as a 4.4mm analog input, allowing the user to build their perfect audio system to receive Digital and analog signals from an external DAC, an interface and an external source device and use them with the convenient integrated CA1000T system.

4. USB input, Bluetooth, Wi-Fi

ACRO CA1000T supports USB Type-C DAC functionality. Enjoy perfect sound from both Mac and Windows PCs as the CA1000T can play back sound sources in the highest quality.

It also supports network playback such as AK Connect and Roon Ready and various streaming apps via high-quality Bluetooth and dual-band Wi-Fi, completing a perfect all-in-one head-fi audio system for audiophiles.

*Roon Ready feature will be unlocked by firmware update.

Mini XLR cable PIN assignment

TERATON ALPHA, the essence of A&K audio technologies

Without TERATON ALPHA, AK's ultimate sound solution, it would have been impossible to realize the powerful performance of the most detailed headphones and the intricate signal paths of a dual-tube, triple-amplified system with minimal noise. Astell&Kern has further improved TERATON ALPHA, using the knowledge gained from the development of the hybrid tube system of our SP2000T and the noise reduction of the CA1000.

TERATON ALPHA is a unique technology from Astell&Kern, which through effective noise reduction, efficient power management and unchanged amplification as well as a fully converted audio output interface enables audio reproduction that is as faithful as possible to the original. The HEXA audio circuitry structure and independent dual audio circuitry, implemented for the first time in the SP3000, are paired with the TERATON ALPHA sound solution to produce the purest original sound.

4 gain levels and up to 15Vrms output for the perfect head-fi setup

In order to perfectly drive the most detailed IEMs and the most demanding headphones, an output that matches the characteristics of the receiving device is required. The ACRO CA1000T supports 4 gain level settings so that almost any headphone can be operated optimally.

The 4 gain stages can create the ideal output for a device's characteristics and sound, allowing the user to fine-tune and set the desired output volume. With an output power of up to 15Vrms, even high-impedance headphones can be operated without any problems.

The electrical capacitance of the outputs has been increased to increase stability when operating devices with different impedances when adjusting the gain, and the separate symmetrical and Unbalanced volume controls optimize current flow and reduce noise for the best sound.

With the ACRO CA1000T, you can enjoy optimal device performance and pure sound that touches your heart.

Upgraded sound, the world's first use of the latest ESS flagship DAC

The ACRO CA1000T is equipped with two ES9039MPRO and for the first time uses the latest flagship DAC from ESS to offer an even more vivid and voluminous sound that exceeds your imagination.

The ES9039MRO is an additional one ES9039PRO model that has an integrated stereo hardware MQA renderer.It features even more advanced modulation than the previous flagship DAC to reduce power consumption, noise and distortion inside the DAC to improve audio performance

Astell&Kern developed a new amplifier block design and optimized to increase the performance of the ES9039MPRO and achieve a more balanced and intense sound with deeper and richer bass and clearer treble.

Sound shaping by DAC filter

With the ACRO CA1000T you can choose from seven DAC filters to create your own sound style. Shape your own sound with the DAC filters.

Fully balanced circuit with dual tube

The ACRO CA1000T features two twin triode KORG Nutube tubes, first used in our award-winning SP2000T, offering advanced tube tones.

When a product is equipped with a dual DAC and a tube, there must be a separate circuit that converts the signal to a balanced signal just before the output terminal. This structure requires a process to convert an unbalanced signal to a balanced signal in which noise is amplified. However, the CA1000T offers a fully balanced circuit that separates the left and right channels with two vacuum tubes, creating an even more natural and smooth sound.

Both Tube AMP mode and OP AMP offer a powerful 15Vrms output, and the headphone jacks allow you to enjoy the unique sounds of the vacuum tubes without any restrictions.

TRIPLE AMP SYSTEM is the next generation of AMP technology

ACRO CA1000T goes above and beyond the standard approach in selecting AMP mode depending on the type of music you listen to. Choose between the TUBE AMP mode, the OP AMP mode or the brand new HYBRID AMP mode.

OP AMP mode uses Astell&Kern's AMP technology and ensures an extremely clear and dynamic sound sound, while the TUBE AMP mode delivers a uniquely warm and musical sound. The HYBRID AMP mode - a first for digital audio players - improves the resolution and clarity of the existing TUBE AMP mode to express more musical details. The HYBRID AMP mode combines the advantages of retro analog performance and high-resolution output and offers you a completely new sound characteristic.

Experience the unique sound enhancements that this AMP technology has to offer.

  • OP AMP Mode - Extreme clarity and dynamics
  • Tube AMP Mode - Uniquely warm and musical
  • HYBRID AMP Mode - A fresh combination of retro vibes and high-resolution output

Custom design to minimize microphonic noise

A special custom design minimizes microphonic noise that can be caused by external shock and vibration.

To solve the structural problem of vacuum tubes where even the slightest shock or vibration generates microphonic noise, we have repeatedly develops new designs and conducts thorough checks and tests during prototyping.

Both sides of the vacuum tube are covered with flexible silicone covers to minimize shock, and a magnetic force is used to physically separate the tube from the circuit board separate, providing greater stability and isolation when the tube is in service.

Astell&Kern is dedicated to developing those small elements and aspects that make the unmatched difference between our products and the sound of the competition

*This technology has a patent pending.

Crossfeed, speaker effect when listening through headphones

In a headphone environment where the left and right channels are closely separated, prolonged listening may cause ear fatigue. The moment you switch on Crossfeed, the experience of a 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.

Adjust the crossfeed level according to your listening preferences with the help of detailed settings such as shelf cutoff, shelf gain and mixer level.

Streamline device care with USB PD 2.0 charging function and battery protection mode

ACRO CA1000T supports USB PD 2.0 charging at 9V/3A and offers 11 hours of continuous playback on a full charge.

As the device is connected to the mains for a long period of time while it is on connected to different audio devices, long charging can shorten battery life.

ACRO CA1000T has a battery protection mode that extends battery life. When battery protection mode is activated, the battery will be charged up to 85%, then charging will stop. When the battery drops below 80%, charging will start again and the battery will be charged up to 85%.

Enjoy the ACRO CA1000T's powerful sound while optimizing it for longer life with the ACRO CA1000T's battery protection mode

*Battery protection mode will be supported through a firmware update.

Real-time information through light

The LED light, which resembles the light of a vacuum tube, allows you to check the bit depth of the music currently playing or the amplifier mode used.

Playback Mode - 16bit: Red / 24bit: Green / 32bit : Blue / DSD: Purple
Amplifier Mode - OP AMP: Red / Tube Amplifier: Orange / Hybrid Amplifier: Blue Green

Silver plating shielding box

A shielding can is used to prevent various noise and electromagnetic interference from affecting the audio block. The ACRO CA1000T goes one step further to achieve excellent audio performance and perfect shielding by applying highly conductive, high-purity silver to the existing shielding can and physically separating digital and analog signals.

AK File Drop for wireless transfers

The new AK File Drop function of the CA1000T 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.
Managing music files is now possible with a wireless solution.

Supports Native DSD512, 32bit/768kHz

ACRO CA1000T supports Native DSD512 and up to 32bit/768kHz with Astell&Kern's excellent audio technology, so you can enjoy your favorite music to the fullest.

MQA 16X full decoder and support for optical inputs and outputs

ACRO CA1000T supports MQA 16X full decoder via hardware renderer. In addition, MQA sound sources can be input and output via the optical input/output.

*Input: Hardware rendering of the primary deconvolved signal of the connected output device
*Output: CA1000T outputs the signal after primary MQA deconvolution

ReplayGain adjusts the playback volume automatically and evenly

Introduced ReplayGain, which adjusts sound sources with different volumes to an identical level. Now enjoy your custom playlists seamlessly with the ACRO CA1000T's ReplayGain function.

*ReplayGain supports sound sources up to 24bit/192kHz .

Wireless hi-fi sound through BT-Sink

The BT Sink function connects the ACRO CA1000T 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 ACRO CA1000T via the BT sink function.

MQA (Master Quality Authenticated) is an award-winning British technology that reproduces the sound of the original master recording. The master MQA file is fully authenticated and small enough to stream or download. Visit for more information. The Astell&Kern CA1000T is equipped with MQA technology, which allows you to play back MQA audio files and streams and preserve the sound of the original master recording. Learn more. The MQA logo is a trademark of MQA Limited. © MQA Limited 2018

Qualcomm aptX is a product of Qualcomm Technologies, Inc. and/or its subsidiaries. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. aptX is a trademark of Qualcomm Technologies International, Ltd, registered in the United States and other countries.

LDAC and the LDAC logo are trademarks of Sony Corporation. Learn more.

Roon Ready network players from our partners already have Roon's high-resolution streaming technology integrated. They combine easy setup, everyday reliability, and support for the highest level of digital audio performance in the industry. Every Roon Ready Player is certified by Roon to guarantee the same outstanding experience regardless of manufacturer, price and features. Learn more.