Astell&Kern A&futura SE300 Titanium Limited Edition

For the first time in Astell&Kern players, Class A ear amplifiers and R-2R DAC are used to produce original sound effects.

· Equipped with ultra-fine 24 bit R-2R DAC

· Uses 96 ultra-precision 0.01% TCR10 resistors (*10 ppm/℃ low temperature coefficient of resistance)

· Built-in (Class A/AB) binaural amplification mode

· Normal Gain and High Gain dual mode selection, showing the perfect Hi-Fi experience · OS / NOS mode options

· First use of independently developed FPGA technology

Using 24 bit R-2R DAC The R-2R DAC in SE300 uses 48 pairs (23xR and 25x2R) of 96 ultra-precision resistors to generate analog signals, thereby achieving true Hi-Fi 24-bit decoding. To maintain true sound quality, use ultra-precision resistor design and use R-2R DAC to achieve Hi-Fi sound effects. The key is to use ultra-precision resistors with an error range of 0.01% to control accurate current values. Supports Class A/AB bi-amp mode Class A produces low-distortion and natural sound, and Class AB efficiently plays dynamic sound, so users can choose between these two amplifiers based on their listening preferences and the type of music they play. Class A amplifier mode Class A amplifier is an analog amplifier that provides the best linear output, amplifies the signal without distortion or loss of signal, and provides a soft, warm and natural sound. The refined analog signal created directly by the R-2R DAC is passed through an organic and powerful Class A amplifier to reproduce the sound closest to the original analog audio.

Class AB Amplifier Mode A Class AB amplifier is an analog amplifier that provides a powerful output with the added benefit of high efficiency. This delivers a dynamic and crisp sound with less harmonic distortion. Dual mode selection of Normal Gain and High Gain, matching various headphone specifications on the market, still maintaining the best sound output. This setup produces high current output, resulting in powerful sound and excellent driver control. Balanced can provide up to 6 Vrms voltage, which can easily drive high-impedance headphones.

SE300 is equipped with FPGA exclusively developed by Astell&Kern and provides NOS (Non-Over Sampling) / OS mode (Over Sampling). An FPGA (Field Programmable Gate Array) is optimally designed to relay digital signals to the R-2R DAC through its algorithm, rather than using off-the-shelf commercial semiconductor chipsets on the market. NOS mode: Plays pure original sound without any processing, allowing users to enjoy the true unprocessed sound decoded by the R-2R DAC itself. OS mode: Provides partial digital processing to expand the bandwidth of the original signal to provide a wider sense of space, thereby creating crisp and clear sound.

Supports ReplayGain function, the player can automatically analyze the volume of music files, supports up to 24Bit/192kHz format files, and plays the entire album at the corresponding volume. Equipped with 3.5mm (Unbalanced), 2.5mm and 4.4mm (Balanced) output peripherals There are switches, volume controls and LED light displays. The volume control on the SE300 has an LED light to display the currently playing music file or the current AMP mode: Green LED light: indicates 24-bit format. Blue LED light: indicates 32-bit format. Purple. LED light: Indicates DSD format* The LED can be turned on or off according to user preference.

Convenient for use on the go or on the table, SE300 has a built-in 5,050mAh large-capacity battery that can support up to *12 hours of continuous playback* Standard: FLAC, 16bit, 44.1kHz, Vol.80, LCD Off Provides Type C charging mode, which can play for 3.5 hours Charging can be completed. AK's patented TERATON ALPHA technology exerts high performance, isolates the overall circuit interference, increases the audio circuit space and comprehensively improves the decoding performance.

SE300 Titanium (Limited Edition) The body is made of titanium, and its ingredients include Grade 5 titanium alloy, aluminum and vanadium alloy. It is also the first material used in high-definition players. Titanium alloy is generally used as the material of choice in aviation, medical and many other fields. The rotating wheel and side buttons are carefully ground by a Swiss-made 6-axis vibration-free CNC machine. This technology is often used in the production of high-end watches, and the AF coating further ensures the durability and smooth touch experience of the Titan Edition. Titanium alloy has high temperature resistance and conductive properties, which can reduce temperature changes and electromagnetic interference. This advantage can better control interference and improve the overall sound quality. In terms of listening, the sound field is broadened, the overall sound is more detailed, and the low-frequency power is deeper and richer. The SE300 Titanium Edition displays Titanium Limited Edition when it is turned on, which is different from the SE300 Regular Edition.

product specifications

Body color: titanium

Display: 5.46-inch touch screen, HD 1080x1920

Supported audio formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF

Sampling 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

Headphone output level: Unbalanced 2Vrms │ Balanced 4Vrms (Condition No Load, Normal Gain) Unbalanced 3Vrms │ Balanced 6Vrms (Condition No Load, High Gain)

CPU: 4 cores

Digital to Analog Converter: Full Discrete R-2R

Decoding support: 32bit/384kHz playback

Input: USB Type-C Input (PC & Mac)

Output: 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)

Special function: Over-the-air firmware upgrade (OTA)

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

Signal-to-noise ratio: 114dB @ 1kHz, Unbalanced │ 115dB @ 1kHz, Balanced (Normal Gain) 115dB @ 1kHz, Unbalanced │ 115dB @ 1kHz, Balanced (High Gain)

Crosstalk: -135dB @ 1kHz, Unbalanced │ -144dB @ 1kHz, Balanced

Total harmonic distortion: 0.006% @ 1kHz, Unbalanced │ 0.006% @ 1kHz, Balanced

Intermodulation distortion: 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)

Reference clock jitter: 25ps (Typ), 500 Femto Seconds Ref

Memory: 256 GB [NAND]

Battery capacity: 5,050mAh 3.8V Li-Polymer

Playback time: up to 12 hours (Standard: FLAC playback, 16bit, 44.1kHz, Vol.50, LCD Off, Normal Gain)

Charging time: about 3.5 hours (9V 1.67A Charging)

Supported operating systems: Windows 10,11(32/64bit) MAC OS X 10.7