Astell & Kern Acro S1000 Speaker Pair

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The ACRO S1000 2-way speaker system uses precise, hand-built drivers of the highest standard to open up your sound stage.

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  • Aluminum alloy enclosure for minimal resonance
  • ScanSpeak® speaker drivers deliver clear, distortion-free sound
  • Bass reflex design provides full, tight bass
  • Binding posts for versatile connection options
  • Big punch from a small package

Aluminum alloy enclosure for minimal resonance

Conventional speaker builds experience a struggle between the diaphragm of the driver unit and its enclosure. In order to get optimal performance, the faster a speaker diaphragm vibrates, the sturdier a speaker enclosure is required to house the driver unit.

Lighter weight enclosures can support the movement of a diaphragm, but sacrifice acoustic performance due to the vibrations experienced, which detracts from sound quality.

The ACRO S1000 uses a sturdy aluminum alloy metal enclosure to withstand the fast vibrations of its diaphragm. The aluminum alloy minimizes noise and undesirable vibrations, leaving nothing but the air movements captured in your music. The ACRO S1000 enclosure not only provides acoustic benefits, but it completes the aesthetically pleasing design.

A 2-Way speaker system

The ACRO S1000 uses Danish ScanSpeak driver units, a top choice of high-end loudspeaker manufacturers. This 2-way speaker system uses precise, hand-built driver units made by ScanSpeak, who has provided the highest standard speaker drives for over 40+ years. The ACRO S1000 will open up your sound stage.

0.75" Tweeter delivers a stable, vivid sound

The ACRO S1000 tweeters use Ring Radiator technology, an exclusive technology developed by ScanSpeak. The tweeter features a non-dome-shaped soft diaphragm with a phase plug at its center and a large-scale roll. The phase plug prevents distortion from high-frequency collision and the Ring Radiator structure provides a high level of sound stability and high frequency band scalability. As a result, you will hear more natural and clear sound.

High-Definition Sound Without Distortion

As the pair of tweeters ensure high-frequency perfection, the main drivers provide effective midrange and bass from its full-range driver units. Thanks to a powerful neodymium ring motor on the driver units, the 2.0" midrange drivers deliver a distortion-free, natural, and high-resolution audio experience.

sound direction with phase plug versus without phase plug

Bass reflex design for full, tight bass

The ACRO S1000 adopted the bass reflex design to deliver deep, rich bass appreciated by music lovers everywhere. The bass reflex design of ACRO S1000 increases the efficiency of low frequencies by using the resonance characteristics of sound emitted from the unit’s back panel for the ultimate bass reproduction. The rear port of the ACRO S1000 creates a passage for bass reproduction, which reinforces the low end for deeper, richer tones.

Binding posts for versatile connection options

With the binding posts of ACRO S1000, the S1000 is easy to connect and is compatible with many traditional audio systems. High-quality, gold-plated connectors found on the back of each speaker ensures direct and clear interconnections.

Speaker cable sold separately.

Optimized crossover design for high-resolution audio

You can think of crossovers as an orchestra conductor that manages each speaker drivers' optimal capacities, the sound output in this case, to the fullest. If any high, mid or low frequencies become overlapped, or misallocated, then the sound becomes stuffy and muffled, diminishing the resolution from the audio system playback.

The ACRO S1000 has an optimized crossover design that has been precisely tuned to deliver a clear acoustic experience, with great details of the original performance. Let your ears judge the well-balanced and orchestrated sound of the ACRO S1000.

Compact yet powerful

Two-way drivers in an aluminum alloy enclosure with optimized crossover design and independent duct design brings surprising sound from a small package. Now you can experience very subtle change to the big punch of peak performances. Enjoy your music more than ever before.

Acro S1000 dimensions


Technical Features

ACRO S1000 / DSM11
Body Color
Gun Metal
Body Material
4.32" W x 5.43" H x 5.43" D (109.8mm x 137.8mm x 138mm)
68.78 oz (1.95kg) each
Enclosure Type
Bass Reflex
Input Terminal
Binding Posts (+/-)
87 dB (2.83V, 1m)
Speaker System
2-way speaker system (1st Passive Crossover filter) / 0.75" Tweeter x2 / 2.0" Midrange x2
Crossover Frequency
Nominal Impedance
6.5 ohm
Frequency Response
93Hz - 40kHz
Speaker Output
Max 20W x2

Package Includes

  • Pair of Speakers