Astell&Kern / A&ultima SP4000 Black

Variations

The A&ultima SP4000 is the latest flagship digital audio player that employs an OCTA audio circuit structure, encapsulating the essence of audio engineering, delivering a sophisticated, powerful, and incredibly accurate sound experience like no other.

■ True Quad DAC configuration with a unique OCTA audio circuit structure (4 AK4191EQs + 4 AK4499EXs)
■ High Driving Mode with horizontally paralleled OP AMP
■ ESA (Enhanced Signal Alignment) technology minimizes group delay
■ LDO (Low Dropout) regulator for ultra-low noise power supply
■ Any Layer HDI PCB technology minimizes signal loss
■ 99.9% pure copper shielding can blocks external noise and electromagnetic interference
■ Astell&Kern's first full Android OS with free app installation
■ ADP (Astell&Kern Direct Path) proprietary customization technology overcomes SRC (sampling limit)
■ Advanced DAR (Digital Audio Remaster) using VSE (Virtual Sound Extender)
■ 6-inch 2K display and Snapdragon 6125 Octa-core CPU for comfortable operation
■ 4.5th generation UI combining functionality and emotional design
■ Stainless steel housing Made of 904L stainless steel
■Includes a Perlinger shrunken calfskin leather case

■Model: A&ultima SP4000
■Color: Black
■Material: Stainless Steel 904L
■Display: 6-inch 2K (2160 x 1080) touchscreen
■Dimensions (W x H x D): 85mm x 149.8mm x 19.5mm
■Weight: Approximately 615g
■Firmware Updates: OTA
■Operating Temperature: 0°C to +40°C
■Supported OS: Windows 10 (32/64-bit) 11 (64-bit) / Mac OS X 10.7
■Internal Memory: 256GB [NAND] (including system memory)
■External Memory Support: 1 x microSD slot (up to 2TB)
■Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
■Bluetooth: V5.0 (A2DP, AVRCP / SBC, AAC, Qualcomm? aptX? HD, LDAC, LHDC)
■Supported File Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
■CPU: Octa-core
■DAC: AKM AK4191EQ x 4 + AK4499EX x 4 (Real Quad DAC)
■Supported Sampling Rates
・PCM Max: 768KHz (16/24/32-bit)
・DSD Max: DSD512 (22.4MHz/1-bit) Stereo
■Input: USB Type-C (Charging & Data Transfer)
■Output
・3.5mm 3-pole unbalanced output (also compatible with optical digital output)
・4.4mm 5-pole balanced output (5-pole GND connection)
■Output Level: Unbalanced 4.1Vrms / Balanced 8.2Vrms (unloaded)
■Output Impedance: Unbalanced 3.5mm (0.7Ω) / Balanced 4.4mm (1.7Ω)
■Frequency Response:
±0.006dB (20Hz-20kHz) Unbalanced / ±0.006dB (20Hz-20kHz) Balanced
±0.06dB (20Hz-70kHz) Unbalanced / ±0.06dB (20Hz-70kHz) Balanced
■S/N Ratio: 129dB @ 1kHz, Unbalanced / 131dB @ 1kHz, Balanced
■Crosstalk: -136dB @ 1kHz, Unbalanced / -145dB @ 1kHz, Balanced
■THD+N: 0.0005% @ 1kHz, Unbalanced / 0.0003% @ 1kHz Balanced
■IMD: 0.0004% 800Hz 10kHz (4:1) Unbalanced / 0.0004% 800Hz 10kHz (4:1) Balanced
■Clock Jitter: 25ps (Typ)
■Reference Clock Jitter: 250fs
■Battery: 6,780mAh 3.8V Lithium Polymer
■Charging Time: Approximately 4 hours (QC 3.0 charging)
■Playback Time: Approximately 10 hours (Normal Mode, FLAC, 44.1KHz/16-bit, Vol. 50, LCD Off, Unbalanced Output)
■Accessories: SP4000 Leather Case, Earphone Carrying Leather Pouch, USB Type-C to Type-C Cable, Screen Protector, MicroSD Card Slot Cover
■Country of Origin: Korea
■Manufacturer's Warranty: 1 Year (Product Code: 1) / 90 Days (Accessories)