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Astell and Kern - ACRO L1000 Balanced Headphone Amplifier

Headphone Amp

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Unparalleled Computer and Desktop Audio Experiences Await: Astell & Kern ACRO L1000 Balanced Headphone Amplifier Boasts Dual DACs, Native DSD, and Bit-to-Bit 32-Bit/384kHz Playback

The Astell & Kern ACRO L1000 looks like no other balanced headphone amplifier/DAC combo in the world. It sounds like no other, either. Both feats are by design. A desktop audio component par excellence, L1000 arrives with built-in dual AK4490 DACs, 32-bit/384kHz PCM support, native 11.2MHz DSD ability, and tremendous output options tailored to your needs and environment. As for the proverbial elephant in the room, that incredible-looking volume knob that begs for you to grab it and crank the decibels on your favorite tunes? Try and find a product that replicates its experience or aesthetics – or 3.81-inch diameter, 0.7-inch height, and red-ringed glow. Better still, don't waste your time and instead use devote your hours to enjoying the immense sonic and tactile pleasures afforded by L1000.

Engineered to the same no-compromise degree as the company's portable audio players, the reddot Award-winning L1000 uncovers the hard-to-mine detail, dynamics, nuances, and textures embedded in your music and reproduces them with startling accuracy and arresting liveliness. Its balanced, dual reference DACs deliver exceptional resolution, spaciousness, and airiness all the while operating with near-inaudible levels of distortion. Its bit-to-bit playback of high-resolution files means you'll hear studio-quality audio whenever you want – and without any worry of down-sampling. And rest assured this gem can effortlessly drive almost any ‘phone under the sun.

A jack of all trades, L1000 provides multiple audio output options. It can be connected to a universal 3.5mm/6.3mm jack or to a headphone or earphone with a 2.5mm/4-pole XLR balanced jack. As a bonus, unlike most headphone amplifiers, L1000 features speaker binding posts offering a maximum audio output of up to 15Wpc at 4 ohms. That's correct: L1000 doubles as a desktop speaker amplifier. Seamless connectivity to computers and digital-music sources (particularly Astell & Kern players), along with three sound settings, come standard on a headphone amplifier whose drive, precision, sonics, appearance, and build quality put it in a category of its own. 100% Music Direct Guaranteed.

"The unit handled everything I threw at it, including PCM music sampled at 352.8kHz and 384kHz. All worked perfectly well. And it all sounded excellent."

Bit-to-Bit 32-Bit/384kHz PCM and Native DSD 256 Playback
ACRO L1000 plays back bit-to-bit high-resolution PCM digital audio up to 32-bits. A 32-bit CPU is onboard for the most accurate processing of digital audio playback without compromising audio quality. As a result, ACRO L1000 can reproduce up to 32-bit/384kHz PCM as originally recorded, with no down-sampling. It also supports native DSD playback up to 11.2MHz, without conversion.

Support for Various Output Options
ACRO L1000 provides multiple audio output options to fit your needs. It can be connected to a universal 3.5mm/6.3mm jack, or to a headphone or earphone with a 2.5mm/4-pole XLR balanced jack. Unlike other headphone amplifiers, ACRO L1000 features speaker binding posts offering a maximum audio output of up to 15W per channel at 4 ohms.

Three Different Filters to Suit Your Preferences
ACRO L1000 provides three sound settings: neutral, bass-boost, and high-gain filters to suit your preferences. Bass-boost brings you deeper bass. The high-gain filter provides more power output. You can switch the different sound filters by simple pressing a button of L1000. The color of the LED light changes with the mode selected.


  • Dual High-End AK4490 DACs
  • Up to to 32-bit/384kHz PCM and Native DSD 256 playback
  • Support for various audio output options
  • 15W audio output per channel for stereo speakers
  • Three different audio filters
  • Optimal design for both usability and sound
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Body Color: Gun Metal
Body Material: Aluminum
DAC: AKM AK4490 x2 (Dual DAC)
Inputs: USB Micro-B input (PC/MAC)
   Phones Out(3.5mm, 6.3mm)
   Balanced Out(2.5mm-only 4-pole supported, 4-pin Balanced XLR),
   Speaker out (L/R binding posts x2)
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), Stereo
Output Level: Unbalance 6Vrms / Balance 8.5Vrms (Condition No Load)
Power Supply: 12V adaptor
   Frequency Response:
      ±0.064dB (Condition: 20Hz~20kHz) Unbalance & Balance
      ±0.73dB (Condition: 10Hz~70kHz) Unbalance & Balance
      Signal to Noise Ratio: 115dB @ 1kHz, Unbalance / 116dB @ 1kHz, Balance
   Crosstalk: 108dB @ 1kHz, Unbalance / 138dB @ 1kHz, Balance
   THD+N: 0.003% @ 1kHz, Unbalance / 0.001% @ 1kHz, Balance
   Output: 15W x2 (4ohm)
   Frequency Response: ±0.32dB (Condition: 20Hz~20kHz) (Condition: 4ohm, 1kHz, 10% THD)
   Signal to Noise Ratio: 95dB (Condition: 4ohm, 1kHz, 10% THD)
   Crosstalk: 110dB (Condition: 4ohm, 1kHz, 10% THD)
Dimensions (WHD): 4.44" x 6.29" x 4.43"
Weight: 32.45 oz.

User Manual (PDF, 1.2 MB)

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