Astell&Kern / IRVAKSR35

With the slogan ""Hi-Fi Sound on-the-go,"" the Astell&Kern / A&norma SR35 applies the new generation amplifier technology and the latest audio design from our flagship line products to achieve the three key points of a portable audio player: high sound quality, compactness, and long playback.

■[Hi-Fi Sound on-the-go] Compatible with the basics of a portable audio player at a high level
・A&norma is a series created to enjoy Astell&Kern's premium sound in a compact size. The latest ``A&norma SR35'' is a model with the slogan ``Hi-Fi Sound on-the-go'' that combines the three key points of a portable audio player: high sound quality, compactness, and long playback, to an even higher level, by applying the new generation amplifier technology and the latest audio design applied to the flagship line products. Equipped with 3.5mm 3-pole unbalanced output, 2.5mm 4-pole balanced output, and 4.4mm 5-pole balanced output. Supports native playback of PCM 384KHz/32bit and DSD 256. A&norma SR35 provides Hi-Fi premium sound based on Astell&Kern's philosophy to all music lovers.

■Quad DAC configuration and DAC switching mode for true Hi-Fi sound
・The A&norma SR35 is the first in the A&norma series to adopt a Quad DAC configuration, which is equipped with four Cirrus Logic Master HIFI DAC ""CS43198"" (two each for L/R). The CS43198 DAC is highly praised for its excellent spatial representation and resolution. It is also equipped with a ""Dual/Quad DAC switching mode"" that allows you to switch between Dual DAC and Quad DAC. In Quad DAC mode, by adopting a newly designed audio circuit, unique TERATON ALPHA technology, and the new generation amplifier technology installed in the flagship model, we have achieved an amazing S/N ratio of 130 dB and low crosstalk of -145 dB when connected in a balanced manner, dramatically improving the power, spatial expression, and resolution. Dual DAC mode streamlines power management and enables continuous playback for approximately 20 hours.

■The essence of Astell&Kern technology - equipped with a new generation amplifier
・Astell&Kern's brand philosophy of ``not overlooking even the slightest difference in sound quality'' has received numerous acclaim through the release of premium audio players that combine innovative circuitry and amplifier technology.
The A&norma SR35 is equipped with the new generation amplifier technology adopted in the flagship A&ultima line, and is designed with unique in-house technology so that A&norma users can enjoy high-level sound approaching the A&ultima line. The adopted new generation amplifier technology is Astell&Kern's unique amplifier design, which effectively improves noise reduction at high output. As a result, A&norma SR35 has been completely transformed into a new generation amplifier design suitable for premium audio, from OP-AMP selection to component placement and circuit design. Furthermore, by improving the current handling capacity on the output side, even higher output is achieved while maintaining high S/N and low distortion. Maximizes the performance of various earphones and headphones with different impedance.

■Evolved “TERATON ALPHA” sound solution
・Incorporates the ultimate sound solution ""TERATON ALPHA"", which integrates the main circuits developed by Astell&Kern. TERATON ALPHA is Astell&Kern's ultimate sound solution that delivers pristine audio reproduction through the audio output interface through effective power supply noise rejection, efficient power management, and low-distortion amplification. Equipped with Astell&Kern's patented technology, the result of tens of thousands of hours of continuous research and development, to reproduce sound closer to the original intended by artists and producers.

■Equipped with 2-stage gain control
- In order to seamlessly use highly sensitive and delicate IEMs and headphones that have high impedance and are difficult to drive, it is necessary to provide an appropriate output according to the specifications of the connected device. A&norma SR35 supports two-stage gain control of normal gain and high gain due to improved current handling capacity using new generation amplifier technology. By achieving a high output of 6Vrms when using balanced output in high gain mode, it is possible to drive various IEMs and headphones with plenty of margin.

■All-Day Music? Realizes continuous playback for approximately 20 hours.
・A&norma SR35 provides the best portability as a digital audio player with long playback time and powerful output that is top of its class. A&norma SR35 has a compact size that fits easily in your pocket, and is lightweight at only 184g, making it comfortable to carry. Furthermore, in Dual DAC mode, it provides approximately 20 hours of continuous playback, allowing you to enjoy music without frequent charging.

■Color: Charcoal Gray
■Body material: Aluminum
■Display: 3.6 inch HD (720 x 1280) touch screen
■Supported file formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
■Supported sampling rate: PCM maximum: 384KHz (16/24/32bit)
■DSD maximum: DSD256 (11.2MHz/1bit) stereo
■Output level: [Normal gain] Unbalanced 2.1Vrms / Balanced 4Vrms (No load), [High gain] Unbalanced 3.1Vrms / Balanced 6Vrms (No load)
■CPU: Quad-core
■DAC: Ciruss Logic CS43198×4 (Quad-DAC)
■Input: USB Type-C (charging & data transfer)
■Output: 3.5mm 3-pole unbalanced output, 2.5mm 4-pole balanced output / 4.4mm 5-pole balanced output (with GND connection)
■Wi-Fi: 802.11 a/b/g/n/ac (2.4GHz/5GHz)
■Bluetooth: V5.0 (A2DP, AVRCP / QualcommR aptX? HD, LDAC)
■Size (W x H x D): 64mm x 108.3mm x 16.1mm
■Weight: Approx. 184g
■Firmware update: OTA
■Operating temperature: 0℃ ~ +40℃
■Frequency characteristics: ±0.012dB (20Hz~20kHz) unbalanced, ±0.011dB (20Hz~20kHz) balanced, ±0.125dB (20Hz~70kHz) unbalanced, ±0.126dB (20Hz~70kHz) balanced
■S/N ratio: 127dB @ 1kHz, unbalanced / 130dB @ 1kHz, balanced
■Crosstalk: -133dB @ 1kHz, unbalanced / -145dB @ 1kHz, balanced
■THD+N: 0.0005% @ 1kHz, unbalanced / 0.0006% @ 1kHz, balanced
■IMD: 0.0002% 800Hz 10kHz (4:1) unbalanced / 0.0002% 800Hz 10kHz (4:1) balanced
■Output impedance: Unbalanced 3.5mm (1.1Ω) / Balanced 2.5mm (2.7Ω), 4.4mm (2.7Ω)
■Clock jitter: 25ps (Typ)
■Reference clock jitter: 70ps
■Battery: 3,150mAh 3.7V lithium polymer
■Charging time: Approximately 2.5 hours (when charging 5V/2A)
■Playback time: Approximately 20 hours (FLAC, 44.1KHz/16bit, Vol.50, LCD Off, Unbalanced, Normal Gain, Dual DAC)
■Built-in memory: 64GB [NAND] *Includes system area
■External memory support: microSD slot x 1 (maximum 1TB)
■Supported OS: Windows 10 (32/64bit) 11 (64bit) / MAC OS X 10.7
■Accessories: USB Type-C cable (C to C), screen protection sheet, microSD card slot cover
■Country of origin: South Korea
■Manufacturer's warranty: 1 year for main unit / 90 days for accessories