Astell&Kern A&norma SR35 | Digital Audio Player

Enjoy the A&K Premium Sound On-the-Go with the SR35 Digital Audio Player

Features Cirrus Logic CS43198 Quad-DAC (Quad/Dual switching mode)
New UI with "Crimson" theme
New Generation AMP tech with 2-Step Gain mode
Dual WiFi (2.4 & 5GHz)
20-hour continuous playback
Supports 2-way Bluetooth and LDAC, aptX™ HD, 1st Roon Ready A&norma DAP






Bloom's Take
While A&K’s flagship A&ultima series (SP3000) for sure gets all the glory, it’s easy to forget about the A&norma lineup which typically takes portions of tech from the TOTL series, and turns them into class-leading designs at lower prices. Enter the SR35 with its quad-DAC, new amp under the hood, compact form-factor (one of the smallest among high-end DAPs), new and improved ‘Crimson’ UI, and excellent battery life at 20 hours of playback. It’s well-built with typical, top-notch A&K fit and finish, and provides a premium feel for 800 bucks.
If you want a taste of what a flagship player does without dropping a mortgage payment, the SR35 delivers a perfectly scaled down version of the SP3000 sound and performance for a flagship experience we can all enjoy.
Read our full review here.
Need some guidance getting your music files onto your Astell&Kern DAP? Check out our updated Audiophile 101 guide!





Quad DAC Mode for True Hi-FI Sound
For the first time in the A&norma series, the SR35 deploys the Cirrus Logic CS43198 DAC in Quad configuration. In addition, A&K incorporates its unique technical collaboration between the DAC and patented TERATON ALPHA tech for outstanding advancement in dynamics, space, resolution, and separation. A Dual/Quad DAC switch mode is also offered enabling users to adjust and improve power mgmt. efficiency.

New Generation Amp
The SR35 is equipped with New Generation AMP tech previously exclusive to the A&ultima line, a unique design that improves noise reduction at high power output. The SR35 now contains the same amp design as the latest A&ultimate and A&futura products. Moreover, in order to reliably operate at varying impedances, the output current handling capability is increased to maximize the performance across all devices.
2-Step Gain Mode
The SR35 supports a 2-step Gain Level mode to create the perfect match for a wide range of headphones and IEMs for seamless use of both sensitive and hard-to-drive devices. Both 'Normal Gain' and 'High Gain' modes can generate a high current output to create a powerful sound and excellent driver control with up to 6Vrms from the balanced connections.

All-Day Music
The SR35 provides Hi-Fi audio anywhere at any time with premium-class specs and portability, featuring continuous playback time of 20 hours before requiring a recharge. Its compact size fits easily in your pocket, and weighing in at only 6.5 oz, it's light enough to carry without inconvenience.
New Experience, New UI
The SR35 comes with a redesigned Crimson-themed UI, transforming it into a deeply connective music player. It's designed for quick music category browsing and re-experiencing forgotten songs. A&K added an album art search function for re-discovery and heightened interaction of music album art while listening.

Specifications


Material: Aluminum

Supported OS: Windows 10, 11 (32/64bit) | MAC OS X 10.7
Astell&Kern 1 Year Warranty

Display: 3.6”, 720 x 1280 touchscreen

Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DIFF, DSF, MQA

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 (No Load)


[Normal] UnBAL 2.1Vrms | BAL 4Vrms

[High] UnBAL 3.1Vrms | BAL 6Vrms



CPU: Quad-Core

DAC: Cirrus Logic CS43198 (x4)

Decoding: Support up to 32-Bit/384kHz Bit-to-Bit 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: 2.5" x 4.3” x 0.63"

Weight: 6.5oz
Firmware upgrade supported (OTA)

Operating Temp: 32℉ ~ 104℉

Audio (Normal Gain)


Frequency Response


UnBAL: ±0.012dB (20Hz~20kHz) | ±0.125dB (20Hz~70kHz)

BAL: ±0.011dB (20Hz~20kHz) | ±0.126dB (20Hz~70kHz)



S/NR: 127dB @ 1kHz, UnBAL │ 130dB @ 1kHz, BAL

Crosstalk: -133dB @ 1kHz, UnBAL │ -145dB @ 1kHz, BAL

THD+N: 0.0005% @ 1kHz, UnBAL │ 0.0006% @ 1kHz, BAL

IMD SMPTE: 0.0002% 800Hz 10kHz (4:1) UnBAL │ 0.0002% 800Hz 10kHz (4:1) BAL

Output Impedance: 1.1Ω, UnBAL │ 2.7Ω, BAL

Clock


Jitter: 25ps (Typ)

Reference Jitter: 70ps

Storage


Built-In Memory: 64GB [NAND]

External Memory: (x1) microSD (Max. 1TB)

Battery


Capacity: 3150mAh, 3.7V Li-Polymer

Charge Time: 2.5 hours (5V/2A General Charging)

Playback Time: 20 hours (Standard: FLAC, 16-bit, 44.1kHz, Normal Gain, UNBAL, Vol. 50, LCD Off, Dual DAC Mode)

In the Box

SR35 Device
USB-C Cable
Quick Start Guide
microSD card slot cover
Protective Films

Case not Included | Purchase Separately