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 SE300 Titan retail box front 3 quarter over white background
Astell&Kern SE300 Titan 3 quarter front edge highlighting volume knob over white background
Astell&Kern SE300 Titan 3 quarter rear highlighting logo and buttons over white background

Astell&Kern A&futura SE300 | Digital Audio Player

Regular price $1,899.00 Sale price$1,599.00 Save 16%


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

Bloom's Take

Astell&Kern’s SE300, the 4th in the A&futura line, inherits A&K's innovative and experimental efforts within the series while expanding the scope of sound. The SE300 delivers A&K’s first R2R DAC along with an amp section that can operate in class A or class AB mode. They’ve also included their own flavor of FPGA, developed and optimized in-house. It’s noteworthy to add that every aspect of SE300’s user interface and experience has been drastically improved over previous A&futura DAPs.

A&K doesn’t miss a beat here when it comes to its reputation for premium materials, look and feel, resuming the evolution of their design language that began with the SP3000. We’ve noticed the SE300 on our teams’ desks more frequently since its release. It sports TONS of options for tweaking your sound and player efficiency, but you’ll need to be aware of how those options affect your battery (8-12 hours of life depending on your cocktail of settings.)

SE300 maintains the detail and resolution for which A&K is known, but with a push towards a true reference exhibition. And with its NOS/OS and Amp Mode options, you get further range above the core tuning (check out our full SE300 review to see some of the combinations we felt worked well with some popular headphones and IEMs.)

The SE300 is certainly competitive with other DAPs in its price range, but we feel it comes surprisingly close to SP3000's performance given the difference in cost and is a great blend of A&futura refinement and innovation.

Need some guidance getting your music files onto your Astell&Kern DAP? Check out our updated Audiophile 101 guide!

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 3 quarter top over U2 vinyl jacket

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

Astell&Kern SE300 screen closeup with connected Vision Ears earphones on wood table


  • 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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Customer Reviews

Based on 5 reviews
Michael Molnar
Titanium SE300 a superb DAP

I have been using my Astell&Kern SE300 Titanium edition for a week now and I am very satisfied. It is rare that I can so immediately hear something different and great. When you get into higher end audio there's nothing that doesn't sound good, but outside speakers and headphones the differences can be very subtle and only apparent after a long time. Not so here, I could immediately hear something unique in the sound and it was very pleasing. The features are also very complete and interesting. I also feel good when buying an R2R based DAC as it seems more interesting and logical to justify a premium priced product versus and implementation of delta sigma chips converters. And although I don;t want to say R2R is "better", it is more interesting and does sound different. I highly recommend. The only downside, and to be honest most DAPs are worse on this.. the size and weight is not insignificant. I bought this to replace my Questyle QPM that was in my estimation a fantastic form factor (but had other drawbacks). Always trade-offs!


Thank you to Bloom Audio team for their quick response on my questions and fast shipping, everything happened at the same day. So after a week of listening, I can really confirm I love the sound of SE300. I can recommend this DAP to whom loves warm and detailed sound.

David Kley
Great little player

Sounds great!

Audio is 5 stars

Coming from sub-$200 players, loss-less audio fed into this player simply cannot be prepared for.
I went with titanium, just for the look & feel..despite the leather cover being green & covering all but the player's audio interface plate.
Connects easily with the wired (AK 02) and wireless (Noble, Campfire) IEMs I've used with it.

I need to hear every progression through blizzards of associated tracks, & this babe does that trick well.

No need for BS software (yes you, Sony, et al)..drag & drop music files to the USB-C drive that appears when you attach to your computer, in my case Linux Mint, & you are good to go.

I look forward to the next generation of more powerful processors & refined software, and hopefully more titanium.



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