Built-in capacity 256 GB (NAND Flash)
Astell & Kern A & ultima SP1000
Body material Stainless Steel Copper
recoding media Built-in capacity 256 GB (NAND Flash) * System area included
Expansion slot * 1 MicroSD card slot × 1 slot
(SDHC / XC maximum 256 GB / exFAT correspondence)
Music playback Main body recordable number * 2 About 1,560 songs (FLAC / 192 KHz / 24 bits)
About 9,880 songs (FLAC / 44.1 KHz / 16 bits)
file format WAV, FLAC, MP3, WMA, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
Sampling rate 8 kHz, 16 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz * native
DSD native: DSD64 (1 bit 2.8 MHz), stereo / DSD 128 (1 bit 5.6 MHz), stereo / DSD 256 (1 bit 11.2 MHz), stereo
Number of quantization bits 8bit, 16bit, 24bit, 32bit (Float / Integer) * Native
bit rate FLAC: 0 to 8, APE: Fast to High, MP3 / WMA: 320 Kbps maximum, OGG: Up to Q 10, AAC: 320 Kbps maximum
Folder management ○
Tag information ID 3 V 1 Tag, ID 3 V 2 2.0, ID 3 V 2 3.0
Database management Music (All / MQS / DSD), by album, by artist, by genre
Resume function ○ * Reproduction from cueing
Album Art ○
Lyric display ○
Playlist function ○
Playback method Normal play, Shuffle
Repeat mode Repeat, repeat 1 song
Equalizer function PRO EQ (fixed), user EQ (20 Band: 30 Hz to 18 KHz / Gain: ± 5.0 / Q value: 0.1 to 4.0)
audio D / A converter AKM (Asahi Kasei Electronics) AK4497 EQ × 2 (Dual DAC)
Input terminal USB Type-C terminal (charging · data transfer · USB-DAC)
Output terminal * 4 Earphone (unbalanced) output / optical digital output (3.5 mm), balanced output (2.5 mm / 4 pole), balanced output terminal for expansion unit
USB-DAC function * 5 44.1 kHz to 384 kHz / 16 bits · 24 bit · 32 bit DSD 2.8 MHz · 5.6 MHz
Output level Unbalance 2.2 Vrms, Balance 3.9 Vrms (no load)
S / N ratio 120 dB (unbalanced) / 122 dB (balance) (1 kHz)
THD + N 0.0005% (unbalance) / 0.0008% (balance) (1 kHz)
Clock jitter 30 ps (typ)
Reference clock jitter 200 fs (VCXO Clock)
Physical key Rewind, Play / Pause, Fast Forward, Dial Volume (Power / Screen On / Off), Touch Sensor
Lock function Dial volume lock
(It can be set from the notification bar pulled out from the top of the screen)
Volume adjustment 151 steps
Wifi standard IEEE 802.11 b / g / n (2.4 GHz)
Bluetooth version 4.1
Profile * 6 A2DP, AVRCP
Supported codecs SBC, aptX ™ HD
Supported OS * 7 Windows® 10 (32bit / 64bit), 8 / 8.1 (32bit / 64bit), 7 (32bit / 64bit), XP, Mac OS X 10.7 or more
Power supply battery Built-in lithium polymer battery (3,700 mAh / 3.8 V)
Auto off function Auto power off (no operation), back light off (no operation), sleep timer
Charging method * 8 Charging only (when the power is off), charging & playing & data transfer
USB shape USB Type-C (Charge / Transfer)
Connection method MTP (media device) method
screen display Display 5.0-inch TFT color LCD (capacitive touch screen)
resolution HD (720 × 1280 dots)
Size (W × H × D) About 75.8 × about 132 × about 16.2 (mm)
Weight Stainless steel: about 386 g Copper: about 387 g