Astell & Kern ULTIMA SP2000T
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Staying true to their philosophy of delivering original audio experiences without compromise, Astell&Kern strives to design portable music players that reach beyond the capabilities of a standard playback device to enhance the listener’s music enjoyment. The SP2000T combines the OP AMP configuration of the SP2000 —the culmination of Astell&Kern's finest audio technology — with a nostalgic vacuum TUBE AMP, adding a vintage feel to the portable player.
- The Triple Amp System Takes Acoustics to a New Level.
- Vacuum Tube Amplifier Compatible with 2.5 mm, 3.5 mm and 4.4 mm Output Jacks.
- Equipped with ESS ES9068AS QUAD-DAC, for Balanced, Ultra Detailed Sound.
- TERATON ALPHA, Astell&Kern's Ultimate Sound Solution.
- ReplayGain Function to Maintain Consistent Playback Levels between Tracks.
- Dual-Band Wi-fi Support for Uninterrupted Wireless Connection and Improved Compatibility.
- Internal Mechanical Design to Minimize Noise
SP2000T
The "T" in SP2000T does not stand for a specific word, but rather encompasses design approaches and directions made during the product development process.
- True: The SP2000T inherits the SP2000's true-sound philosophy
- Triple: Triple AMP System
- Timeless: Timeless Value
- Tube: Vintage Vacuum Tube Amplifier
TRIPLE AMP SYSTEM is the Next Generation of AMP Technology
The SP2000T exceeds the standard approach to AMP Mode selection, based on the type of music you are listening to. Select between TUBE AMP mode, OP AMP mode, or the brand-new HYBRID AMP mode.
OP AMP Mode
The OP AMP mode puts Astell&Kern's AMP technology expertise to use, delivering extreme clarity and dynamic sound.
TUBE AMP Mode
The TUBE AMP mode provides a uniquely warm and musical sound. Equipped with the portable-friendly dual-triode KORG Nutube, for a unique TUBE AMP sound.
Nutube offers a reliable continuous playback time of approximately 30,000 hthes. It features an anode grid filament structure which operates the same as a triode vacuum tube. It's much smaller, consumes far less power and yet delivers the same audio with rich overtones.
The SP2000T supports all output types, with no restriction on the type of receiver used, so listeners can enjoy the unique characteristics of the vacuum tube. Vacuum Tube Amplifier Compatible with 2.5 mm, 3.5 mm and 4.4 mm Output Jacks. The SP2000T supports all output types, with no restriction on the type of receiver used, so you can enjoy the unique characteristics of the vacuum tube.
HYBRID AMP Mode
The HYBRID AMP mode - a first for digital audio players - enhances the resolution and clarity of the existing TUBE AMP mode to express more musical detail. HYBRID AMP mode, combines the advantages of retro analog performance and high-resolution output, giving you the pleasure of a brand new tonal characteristic.
HYBRID AMP mode supported for the first time by DAP is the essence of Astell&Kern's advanced AMP design technology. New combinations of sounds can be enjoyed in HYBRID AMP mode, which is based on the OP AMP sound and addition of tasteful warm tones unique to TUBE AMP technology.
Special Design to Minimize Microphonics Noise
SP200T features a special design tailored to minimize microphonics (the phenomenon wherein the vacuum tubes generate noise even from a small external impact). Multiple design iterations and verifications have been performed over a long period of time to fix the structural issues of vacuum tubes that generate microphonics noise even from a small impact or vibration.
For minimization of mechanical impact and vibration, both sides of the vacuum tube are fixed with flexible silicone covers, and the vacuum tube has been modularized so it is physically separate from the PCB. A structure that uses magnetic forces to float the amp in the air, thus minimizing noise from the vacuum tube itself, which is generated when it is exposed to mechanical impact or vibration.
Astell&Kern goes to great lengths to innovate and design these small components that make a big difference in the quality and sound of their products that no other manufacturer can match.
Silver Plating Shield Can
Astell&Kern products apply shield cans so that noise and elec-tromagnetic interference, which occur when the countless parts are in operation, do not affect the audio block.
The SP2000T has taken it a step further by applying highly con-ductive, hyper-pure silver plating on the existing shield cans for perfect shielding that provides excellent audio performance.
AK ULTIMATE SOUND SOLUTION, TERATON ALPHA
TERATON ALPHA is AK's ultimate Sound Solution to produce audio playback that is close to the original sound through the audio output interface by use of effective power noise removal, efficient power management and amplification with minimal distortion.
TERATON ALPHA features Astell&Kern's patented technologies, which are the result of tens of thousands of hthes of continuous research and development to produce sound close to the original sound the artist and producer intended.
Quad-DAC for Perfection of Superior Sound
The SP2000T is equipped with fthe ES9068AS DACs, this allows two DACs per channel for dedicated decoding. The SP2000T achieves a more detailed and balanced sound with great depth and spatial realism.
ReplayGain Automatically and Uniformly Adjusts Playback Volume
ReplayGain, which adjusts sound stheces with different volumes to an identical level, has been applied. Now, enjoy ythe own playlists seamlessly through the ReplayGain feature on SP2000T.
- ReplayGain supports up to 24-bit/192 kHz sound stheces.
Dual-Band Wi-Fi (2.4/5 GHz)
Dual-Band Wi-Fi is supported for users who enjoy streaming services, providing enhanced network performance.
With streaming music services becoming more popular, stronger and more reliable network reception becomes even more important for ythe audio experience.
The SP2000T supports Dual Band Wi-Fi (2.4/5GHz, a/b/g/n/ac).
AK File Drop to enjoy wireless transfers
The new AK File Drop function in the SP2000T makes files transfers easier and more convenient. Using AK File Drop, you can freely transfer files wirelessly through a PC, smartphone, or FTP program located on the same network. Music file management is now possible with a cableless, wireless solution.
Wireless Hi-Fi Sound Through BT Sink
The newly introduced BT Sink function connects the SP2000T to an external device via Bluetooth, similar to connecting a smartphone with a BT speaker. Music from an external device, such as a smartphone can now be played back in high-quality on the SP2000T using the BT Sink function.
Real-Time Playback and AMP Mode Information Reflected by Light
Through the softly dispersing LED light, Users are notified of the bit depth information of the song being played or the current AMP mode. LED light may be turned on or off in the user settings, and one can choose between the sound sthece information or AMP mode information displays.
MQA (Master Quality Authenticated)
MQA is an award-winning British technology that delivers the sound of the original master recording. The master MQA file is fully authenticated and is small enough to stream or download. Visit mqa.co.uk for more information.
Astell&Kern SP2000T includes MQA technology, which enables you to play back MQA audio files and streams, delivering the sound of the original master recording.

We have a comprehensive selection of Astell & Kern devices available for demonstration in our HiFi studios in Berlin-Kreuzberg. We look forward to your visit!
Model | SP2000T |
Body Color | Onyx Black |
Body Material | Aluminum |
Display | 5inch FHD 1280 x 1080 Touch display |
Supported Audio Formats | WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA |
Sample rate | 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 / DSD512(1bit 22.4MHz), Stereo |
Output Level | Unbalanced 3.0Vrms / Balanced 6.0Vrms (Condition No Load) |
CPU | Quad-Core |
DAC | ESS ES9068AS x4 (Quad-DAC) |
Vacuum Tube | KORG Nutube 6P1 |
Decoding | Support up to 32bit / 384Hz Bit-to-Bit Playback |
Input | USB Type-C input (for charging & PC & MAC) |
Outputs | 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 | 3.07" (78.1 mm) [W] x 5.55" (141.1 mm) [H] x 0.68" (17.5 mm) [D] |
Weight | about 10.89 oz (309 g) |
Feature Enhancements | Firmware upgrades supported (OTA) |
Audio Performance | |
Frequency Response | ±0.024dB (Condition: 20Hz~20kHz) Unbalanced / ±0.038dB (Condition: 20Hz~20kHz) Balanced ±0.027dB (Condition: 20Hz~70kHz) Unbalanced / ±0.052dB (Condition: 20Hz~70kHz) Balanced |
Signal to Noise Ratio | 121dB @ 1kHz, Unbalanced / 123dB @ 1kHz, Balanced |
Crosstalk | -137dB @ 1kHz, Unbalanced / -142dB @ 1kHz, Balanced |
THD+N | 0.0003% @ 1kHz, Unbalanced / 0.0003% @ 1kHz, Balanced |
IMD SMPTE | 0.0004% 800Hz 10kHz(4:1) Unbalanced / 0.0003% 800Hz 10kHz (4:1) Balanced |
Output Impedance | 3.5mm (1ohm), 2.5mm (1.5ohm), 4.4mm(1.5ohm) |
Clock source | |
Clock Jitter | 25ps(Typ) |
Reference Clock Jitter | 70ps |
Battery | |
Capacity | 4,200mAh 3.8V Li-Polymer Battery |
Playback Time | About 9 hours (Standard : FLAC, 16bit/44.1kHz, Unbalance, Volume 50, LCD Off, LED On, OP AMP Mode) |
Charge Time | About 3.5 hours (Standard - 9V/1.67A Fast charging) About 5 hours (Standard - 5V/2A General charging) |
Memory | |
Built-in Memory | 256GB [NAND] |
External Memory | microSD (Max. 1TB) x1 |
OS | |
Supported OS | Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up |