Astell & Kern SP1000 Ultima
The ultimate AK player, Astell & Kern SP1000 Ultima offers supreme high-end audiophile performance .
The A&ultima SP1000 is a one-of-a-kind, high-end, powerful flagship high resolution music player equipped with the latest advanced features.
A true flagship high-resolution music player it’s the first Astell&Kern player to feature an octa-core CPU for outstanding response and performance High Definition HD5 display to create the best viewing experience with innovative new multi-function wheel and rigid stainless steel or copper housing
The A&ultima SP1000: delivering the ultimate Astell&Kern technology.
Traditional audio has suffered from noise and distortion as power output is increased. Astell&Kern’s advanced audio design and signal management technologies used in the A&ultima SP1000 brings more power output with less noise and minimal distortion.
Independent DACs for the left and right audio channels provide a wider soundstage and better stereo separation.
Each AK4497EQ DAC provides rich and vivid audio reproduction, allowing the listener to enjoy the sound as it was meant to be heard.
Astell & Kern SP1000 Ultima
Onyx Black / Stainless Steel / Copper
Onyx Black, Stainless Steel : Stainless Steel / Copper : Copper
5inch (720 x 1,280) Touchscreen
Supported Audio Formats
WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample) / DSD Native: DSD64(1bit 2.8MHz), Stereo
/ DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
Unbalance 2.2Vrms / Balance 3.9Vrms (Condition No Load)
AKM AK4497EQ x2 (Dual DAC)
Support up to 32bit / 384kHz Bit to Bit Decoding
USB 3.0 Type-C input (for charging & data transfer (PC & MAC)) / Connection Mode : MTP (Media Device)
PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
802.11 b/g/n (2.4GHz)
V4.1 (A2DP, AVRCP, aptXTM HD)
2.98 ”(75.8 mm) [W] x 5.2 ”(132 mm) [H] x 0.64 ”(16.2 mm) [D]
Onyx Black, Stainless Steel : 13.64 oz (386.6 g) / Copper : 13.68 oz (387.9 g)
Firmware upgrades supported (OTA)
±0.062dB (Condition: 20Hz~20kHz) Unbalance / ±0.061dB (Condition: 20Hz~20kHz) Balance
±0.68dB (Condition: 10Hz~70kHz) Unbalance / ±0.67dB (Condition: 10Hz~70kHz) Balance
Signal to Noise Ratio
120dB @ 1kHz, Unbalance / 122dB @ 1kHz, Balance
138dB @ 1kHz, Unbalance / 143dB @ 1kHz, Balance
0.0005% @ 1kHz, Unbalance / 0.0008% @ 1kHz, Balance
0.0004% 800Hz 10kHz(4:1) Unbalance & Balance
Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
Reference Clock Jitter
200 Femto Seconds
3,700mAh 3.8V Li-Polymer Battery
Continuous Playback Time
Up to 12 hours (Standard – MUSIC: FLAC, 16-bit/44kHz, Volume 75, LCD Off)
About 2 hours (Standard – 9V/1.67A Fast charging)
microSD (Max 256GB) x1
Windows XP, Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up