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Astell & Kern

Astell Kern SE300 Digital Audio Player DAP with 256GB Storage Support MicroSD 4.4mm 3.5mm 2.5mm Silver Version

Astell Kern SE300 Digital Audio Player DAP with 256GB Storage Support MicroSD 4.4mm 3.5mm 2.5mm Silver Version

Brand: Astell & Kern

Regular price $1,599.00 USD
Regular price $1,900.00 USD Sale price $1,599.00 USD
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A&futura from Astell & Kern is a product line that represents Astell & Kern’s ceaseless efforts for innovation. SE300, the fourth model in the A&futura range is a premium digital audio player that inherits this identity and expands the scope of sound with an entirely new implemented technology.

A&futura SE300 is equipped with an ultra-refined R-2R DAC, Class A/AB dual amps born with our proprietary TERATON ALPHA technology, and for the first time a self-developed FPGA optimized technology. With these unrivaled components, it offers the true sound philosophy and technology of Astell&Kern.

Immerse yourself into the true analog sound that the SE300 produces with Class-A AMP and R-2R DAC technologies, for the first time in an Astell&Kern player.

General Specifications
  • 2 Versions: Platinum Silver / Titanium Limited Edition
  • Body Material: Aluminum and Stainless Steel
  • Display: 5.46inch HD 1080 x 1920 touch screen
  • Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
  • Sample rate: PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample), DSD : DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
  • Output Level: [Normal] Unbalanced 2Vrms │ Balanced 4Vrms (Condition No Load), [High] Unbalanced 3Vrms │ Balanced 6Vrms (Condition No Load)
  • CPU: Quad-core
  • DAC: Full Discrete R-2R
  • Decoding: Support up to 32bit / 384kHz playback
  • Input: USB Type-C input (for charging & PC & MAC)
  • Outputs: Unbalanced Out (3.5mm), Optical Out(3.5mm), Balanced Out (2.5mm, only 4-pole supported | 4.4m, only 5-pole supported)
  • Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
  • Bluetooth: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)
  • Dimensions: 3.01” (76.45mm)[W] x 5.49” (139.45mm)[H] x 0.69” (17.6mm)[D]
  • Weight: About 11.18oz (317g)
  • Feature Enhancements: Firmware upgrade supported (OTA)
  • Operating Temperature: 0℃ ~ + 40℃ (32℉~ 104℉)

Audio Performance

  • Frequency Response
  • ±0.038dB (Condition : 20Hz~20kHz) Unbalanced │Balanced
  • ±0.45dB (Condition : 20Hz~70kHz) Unbalanced │Balanced

114dB @ 1kHz, Unbalanced │ 115dB @ 1kHz, Balanced (Normal Gain)

  • 115dB @ 1kHz, Unbalanced │ 115dB @ 1kHz, Balanced (High Gain)


  • -135dB @ 1kHz, Unbalanced │ -144dB @ 1kHz, Balanced


  • 0.006% @ 1kHz, Unbalanced │ 0.006% @ 1kHz, Balanced


  • 0.005% 800Hz 10kHz (4:1) Unbalanced │Balanced

Output Impedance

  • Unbalanced Out 3.5mm (1.3ohm) │ Balanced Out 2.5mm (1.3ohm), 4.4mm(1.3ohm)

Clock Jitter

  • 25pS (Typ)

Reference Clock Jitter

  • 500 Femto Seconds

Built-in Memory

  • 256GB [NAND]

External Memory

  • microSD x1 (Max. 1TB)

Battery Capacity

  • 5,050mAh 3.8V Li-Polymer

Charge Time

  • about 3.5hours (9V 1.67A Charging)

Playback Time

  • about 12hours (Standard : FLAC, 16bit, 44.1kHz, Vol.50, LCD Off, Normal Gain)

Supported OS

  • Windows 10,11(32/64bit) MAC OS X 10.7

Place of production

  • Korea

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