Astell&Kern SE300 (x2) silver (x1) Titanium 3 quarter front and rear over white background
Astell&Kern SE300 (x2) silver front and back 3 quarter over white background
Astell&Kern SE300 silver (x2) stacked over white background
Astell&Kern SE300 silver (x2) front and back over white background
Astell&Kern SE300 silver front right 3 quarter over white background
Astell&Kern SE300 silver front over white background
Astell&Kern SE300 silver rear over white background
Astell&Kern SE300 silver profile over white background
Astell&Kern SE300 Titanium 3 quarter front and Titanium profile over white background
Astell&Kern SE300 Titanium 3 quarter rear inserted into stock case over white background
Astell&Kern SE300 Titanium 3 quarter rear over white background

Astell&Kern A&futura SE300 | Digital Audio Player

Regular price$2,499.00


Astell&Kern product logo red

Astell&Kern Brings Pure Analog Sound One Step Closer with the A&futura SE300

  • Titan Limited Edition now available with grade 5 Titanium alloy - Limited to 600 units and includes Leather Case (details below)
  • Features fully discrete 24 bit R-2R DAC
  • New UI with "Crimson" theme and option for OS / NOS modes
  • New Dual-AMP (Class A/AB) mode
  • A&K self-developed FPGA technology
  • Bluetooth 5.0 and Dual Wireless (2.4 & 5GHz) HiFi

Astell&Kern SE300 marketing banner with player over water background

The Future of Analog Sound, SE300

The A&futura SE300, the 4th in the series, is a premium DAP inheriting A&K's ceaseless efforts for innovation while expanding the scope of sound with new technology. It's equipped with an ultra-refined R-2R DAC, Class A/AB dual amps with proprietary TERATON ALPHA technology, and for the first time, a self-developed FPGA optimized technology. With these components, it offers the true sound philosophy and technology of Astell&Kern.

SE300 Titan Limited Edition

The SE300 Titan Limited Edition is a pioneer in material innovation, delivering both a premium feel and unparalleled sound from the R-2R DAC and analog amp.

Constructed using Grade 5 Titanium alloy (a blend of aluminum and vanadium), the SE300 Titan LE is designed to increase the internal corrosive resistance and strength inherent in pure titanium. The alloy embodies exceptional strength while retaining a light weight and is the material of choice in aerospace, medical, and a wide range of other applications. Its ability to withstand heat and electrical conductivity also positions it as an optimal substance for reducing temperature variations and electrical interference within R-2R DACs and analog amplifiers. The integration of Titanium alloy into the SE300 Titan relied exclusively on ultra-precision manufacturing methods such as the use of 6-axis control robots, highly skilled engineering hands, and a Swiss-made 5-axis vibration-free CNC machine.

Discover the SE300 Titan Limited Edition and embrace the cutting-edge analog sound experience from A&K at your fingertips. The limited edition package for the SE300 Titan includes a leather case.

Astell&Kern SE300 Titanium edition dramatic 3 quarter front over gray shadowy background

Fully Discrete 24bit R-2R DAC

The SE300 comes supplied with an R-2R DAC instead of a Delta-Sigma DAC commonly used in other players. R-2R DAC, also known as 'Ladder DAC,' offers natural yet dynamic Hi-Fi sound:

24-bit Decoding
48 pairs (23xR and 25x2R) of 96 ultra-precision resistors are arranged to create analog signals, realizing true Hi-Fi 24-bit decoding.

Ultra-precision Resistor Design
A&K inspected each specifically selected ultra-precision resistor of 0.01% error range for accuracy and precision.

Ultra-precision TCR10 Specs
To create Hi-Fi sound without distortions within such an extreme precision design, the SE300 comes with special TCR10 specs to minimize changes in the 0.01% resistor error range.

Astell&Kern SE300 on wood shelf with related decor

Class A/AB Dual AMP Mode

The SE300 comes with Dual-AMP mode:

Class A Mode
Offers the best linear output, amplifying signals without distortion or loss of signal and providing soft, warm, and natural sounds for accurate reproduction.

Class AB Mode
Offers a powerful output with the added benefit of high efficiency, presenting dynamic and crisp sound with less harmonic distortion.

Astell&Kern screenshots of AMP class and gain modes

2-Step Gain Mode

The SE300 supports a 2-step Gain Level mode to create a perfect match for a wide range of headphones and IEMs. "Normal" and "High Gain" settings allow for high current output to create a powerful sound and excellent driver control. With up to 6 Vrms from Balanced connections, driving high-impedance headphones has never been easier.

Optimized FPGA OS / NOS Modes

The SE300 comes with exclusively developed FPGA and provides optimized OS / NOS modes. The FPGA uses an optimized, proprietary design over off-the-shelf semiconductor chipsets, and supports the most ideal OS (Over Sampling) / NOS (Non-Over Sampling).

Astell&Kern OS/NOS FPGA workflow diagram

NOS (Non-Over Sampling) Mode
Player reproduces the pure original sound without any digital processing, allowing users to enjoy true, unprocessed sounds decoded by the R-2R DAC.

OS (Over Sampling) Mode
OS mode offers partial digital processing that expands the bandwidth of the original signal to offer impressive details, with an expansive sense of space and crisp, clear sounds.

Astell&Kern OS/NOS mode conversion rate diagram

Other Features

  • Supports native DSD256, 32bit/384kHz
  • AK File Drop wireless transfers
  • Wireless Hi-Fi sound via BT Sink
  • ReplayGain automatically and uniformly adjusts volume


  • Material: Aluminum and Stainless Steel | Grade 5 Titanium Alloy
  • Supported OS: Windows 10, 11 (32/64bit) Mac OS X 10.7
  • Astell&Kern 1 Year Warranty
  • Display: 5.46" HD 1080 x 1920 touch
  • Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
  • Sample Rate
    • PCM: 8kHz ~ 384kHz (8/16/24/32-bits per Sample)
    • DSD Native: DSD64 (1-bit, 2.8MHz) Stereo | DSD128 (1-bit, 5.6MHz) Stereo | DSD256 (1-bit, 11.2MHz) Stereo
  • Output Level
    • [Normal] UnBAL 2.Vrms | BAL 4Vrms (No Load)
    • [High] UnBAL 3.Vrms | BAL 6Vrms (No Load)
  • CPU: Quad-Core
  • DAC: Full Discrete R-2R
  • Decoding: Support up to 32-Bit / 384kHz Playback
  • Input: USB-C (for charging & PC/MAC)
  • Outputs
    • UnBAL: 3.5mm (Optical)
    • BAL: 2.5mm, 4-pole | 4.4mm, 5-pole
  • Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
  • Bluetooth: v5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)
  • Dimensions: 3.01" x 5.49” x 0.69"
  • Weight: About 11.18 oz
  • Firmware upgrade supported (OTA)
  • Operating Temp: 0℃ ~ + 40℃ (32℉~ 104℉)


  • Frequency Response
    • ±0.038dB (20Hz~20kHz)
    • ±0.45dB (20Hz~70kHz)
  • S/NR (Normal): 114dB @ 1kHz, UnBAL │ 115dB @ 1kHz, BAL
  • S/NR (High): 115dB @ 1kHz
  • Crosstalk: -135dB @ 1kHz, UnBAL │ -144dB @ 1kHz, BAL
  • THD+N: 0.006% @ 1kHz
  • IMD SMPTE: 0.005% 800Hz 10kHz (4:1)
  • Output Impedance: 1.3Ω, all outputs

Clock Source

  • Jitter: 25pS (Typ)
  • Reference Clock Jitter: 500 Femto Seconds

Storage Capacity

  • Built-In Memory: 256GB [NAND]
  • External Memory: (x1) microSD (Max. 1TB)


  • Capacity: 5050mAh, 3.8V Li-Polymer
  • Charge Time: About 3.5 hours (9V/1.67A General Charging)
  • Playback Time: About 12 hours (FLAC, 16-bit, 44.1kHz, Normal Gain, Vol. 50, LCD Off)

In the Box

  • SE300 Device
  • Leather Case included only with Titan LE | SE300 cases available separately
  • USB-C Cable
  • Quick Start Guide
  • microSD card slot cover
  • Protective Films

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