Astell&Kern Kann Ultra

Fueling Your Sound

The KANN series is adored by audiophiles all over the world for its performance that focuses on ultra-high output and clear sound.
KANN ULTRA, the 5th product in the KANN series, continues the success of the KANN series by providing the highest output of any Astell&Kern player, the inclusion of Triple Output Sound, and an optimized processor and UI/UX to make it even easier to enjoy clear sound performance.

With four Gain Modes that provides up to 16Vrms of desktop Hi-Fi level output and sound, and ES9039MPRO Dual DAC chips, KANN ULTRA perfectly powers many of today's headphones with high resolution. A separate Pre/Line Out allow users to enjoy the sound with a variety of different devices.

General Specifications

• Model: KANN ULTRA

• Body Color: Astro Gray

• Body Material: Aluminum

• Display: 5.5inch HD 1080 x 1920 touch screen

• Supported Audio Formats

  WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA

• Sample Rate

  PCM : 8kHz ~ 768kHz (8/16/24/32bits per Sample)
  DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo
  DSD256(1bit 11.2MHz), Stereo / DSD512(1bit 22.4MHz), Stereo

• Output Level

  - HEADPHONE OUT
  [Low Gain] Unbalanced 2Vrms │ Balanced 4Vrms (Condition No Load)
  [Mid Gain]Unbalanced 4Vrms │ Balanced 8Vrms (Condition No Load)
  [High Gain]Unbalanced 6Vrms │ Balanced 12Vrms (Condition No Load)
  [Super Gain]Unbalanced 8Vrms │ Balanced 16Vrms (Condition No Load)
  - PRE · LINE OUT
  Unbalanced 2Vrms │ Balanced 4Vrms (Condition No Load)

• CPU: Octa-core

• DAC: ES9039MPRO x2

• Decoding: Support up to 32bit/768kHz Bit-to-Bit Playback

• Input: USB Type-C input (for charging & PC & MAC)

• Outputs

  - HEADPHONE OUT
  3.5mm(Unbalanced Out, Optical Out), 4.4mm (Balanced Out, only 5-pole supported)
  - PRE · LINE OUT
  3.5mm(Unbalanced Out), 4.4mm (Balanced Out, only 5-pole supported)

• Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)

• Bluetooth: V5.3 (A2DP, AVRCP, Qualcomm® aptX™-HD, LDAC, LHDC)

• Dimensions: 3.24” (82.4mm)[W] x 5.55” (141.1mm)[H] x 0.96” (24.4mm)[D]

• Weight: About 13.75oz (390g)

• Feature Enhancements: Firmware upgrade supported (OTA)

• Operating Temperature: 0℃ ~ + 40℃ (32℉~ 104℉)

Audio Specifications

• Frequency Response

  HEADPHONE OUT
  ±0.006dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.004dB (Condition : 20Hz~20kHz) Balanced
  ±0.016dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.020dB (Condition : 20Hz~70kHz) Balanced
  PRE OUT
  ±0.022dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.023dB (Condition : 20Hz~20kHz) Balanced
  ±0.023dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.023dB (Condition : 20Hz~70kHz) Balanced
  LINE OUT
  ±0.002dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.002dB (Condition : 20Hz~20kHz) Balanced
  ±0.007dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.006dB (Condition : 20Hz~70kHz) Balanced

• S/N

  HEADPHONE OUT
  115dB @ 1kHz, Unbalanced │ 119dB @ 1kHz, Balanced
  PRE OUT
  110dB @ 1kHz, Unbalanced │ 126dB @ 1kHz, Balanced
  LINE OUT
  110dB @ 1kHz, Unbalanced │ 125dB @ 1kHz, Balanced

• Crosstalk

  HEADPHONE OUT
  134dB @ 1kHz, Unbalanced │ 140dB @ 1kHz, Balanced
  PRE OUT
  128dB @ 1kHz, Unbalanced │ 128dB @ 1kHz, Balanced
  LINE OUT
  129dB @ 1kHz, Unbalanced │ 121dB @ 1kHz, Balanced

• THD+N

  HEADPHONE OUT
  0.0004% @ 1kHz, Unbalanced │ 0.0004% @ 1kHz, Balanced
  PRE OUT
  0.0012% @ 1kHz, Unbalanced │ 0.0005% @ 1kHz, Balanced
  LINE OUT
  0.0013% @ 1kHz, Unbalanced │ 0.0005% @ 1kHz, Balanced

• IMD SMPTE

  HEADPHONE OUT
  0.0006% 800Hz 10kHz (4:1) Unbalanced │0.0006% 800Hz 10kHz (4:1) Balanced
  PRE OUT
  0.0006% 800Hz 10kHz (4:1) Unbalanced │0.0006% 800Hz 10kHz (4:1) Balanced
  LINE OUT
  0.0006% 800Hz 10kHz (4:1) Unbalanced │0.0006% 800Hz 10kHz (4:1) Balanced

• Output Impedance

  HEADPHONE OUT
  Unbalanced Out 3.5mm (1ohm) │ Balanced Out 4.4mm (1.3ohm)
  PRE OUT
  Unbalanced Out 3.5mm (3.5ohm) │ Balanced Out 4.4mm (5.7ohm)
  LINE OUT
  Unbalanced Out 3.5mm (6.5ohm) │ Balanced Out 4.4mm (10.7ohm)

Clock Source

• Clock Jitter: 25pS (Typ)

• Reference Clock Jitter: 200 Femto Seconds

Storage Capacity

• Built-in Memory: 128GB [NAND]

• External Memory: microSD x1 (Max. 1TB)

Battery

• Capacity: 8,400mAh 3.8V Li-Polymer

  Charge Time: about 3.5hours (PD 3.0 Charger)

  Playback Time: about 11hours (Standard: FLAC, 16bit, 44.1kHz, Vol.50, LCD Off, Low Gain)

Supported OS

• Windows 8,10,11 (32/64bit) MAC OS X 10.7

Etc.

• Audio was NOT muted during the measurement.

• The image/specification may be changed without notice to improve product performance and quality.