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Analog Warmth, Digital Precision
Astell&Kern's ethos of producing immersive sound from high-resolution original music stands as a testament to the spirit of innovation and excellence embodied in the A&ultima series. Our goal was to surpass the impeccable design and high-resolution sound of our previous product, the SP3000, by crafting an audio player that truly captures the emotion and resonance of music.

Developed with this vision in mind, the A&ultima SP3000T channels the profound emotion and lasting essence of analog audio. The integration of a real vacuum tube creates an authentic analog sound complemented by cutting-edge audio technology such as TERATON ALPHA for an immersive auditory experience.

Introducing the A&ultima SP3000T — a portable audio player that defies convention, offering a unique fusion of analog and digital excellence
 
Dual RAYTHEON JAN6418 MIL-SPEC Vintage Vacuum Tubes
Our TRIPLE AMP SYSTEM allows listeners to select the right tones for their music
Three levels of voltage with Tube Current option
Stainless steel with 99.9% pure silver plating
Separate digital and analog signal processing (AK4191EQ x2 / AK4499EX x2)
VU Meter
High-performance Qualcomm Snapdragon CPU
 
True Analog Sound with
Real Vacuum Tube
The original vacuum tube is known for its warm sound, attributed to its distinctive rich harmonics, which have cemented its status as a cherished component of Hi-Fi audio. However, its impracticality in terms of miniaturization, primarily due to power control and footprint issues, presented a formidable obstacle, rendering it unsuitable for
use in portable audio players.

In Astell&Kern's unyielding quest for innovation, we refused to settle for conventional sound and design, and instead worked to bridge the gap between stationary and portable audio by infusing the essence of analog sound into our devices.

These efforts eventually culminated in the pairing of the SP3000T with the RAYTHEON JAN6418 Miniature vacuum Tube. The RAYTHEON JAN6418 is a mini vacuum tube popular among audiophiles. Designed to meet military specifications and traditionally used in military communication equipment, it quickly garnered recognition for its distinctively warm and soft sound, leading to its integration into regular audio devices.
 
Sound Craftsmanship for the Ultimate Vacuum Tube Sound
Due to inherent differences in noise and amplification among original vacuum tubes, Astell&Kern adopted a meticulous selection process to adhere to our philosophy of addressing even the minutest differences in sound quality.

Astell&Kern carefully measures and pairs each JAN6418, a difficult process demanding both time and precision. This thorough selection method minimizes output deviation between the left and right channels, resulting in more natural sound reproduction.
Every shielding operation on the vacuum tube is carefully executed by hand to minimize potential noise interference.

Thanks to our unwavering dedication to sound craftsmanship, we have successfully brought the distinctive spatial sense and balance found in our existing audio players into the analog realm of vacuum tube sound.
 
Specifications
 
General Specifications
Model 
SP3000T
Body Color 
Silver, Copper
Body Material 
Stainless Steel with Pure Silver Plating, Copper: Copper
Display 
5.5 inch 1080 x 1920 Full HD 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), DSD512(1bit, 22.4MHz) Stereo
Output Level 
Unbalanced 3.3Vrms │ Balanced 6.3Vrms (Condition No Load)
CPU 
Octa-Core
DAC 
AKM AK4191 x2 (Dual Modulator) & AKM AK4499EX x2 (Dual DAC)
Vacuum Tube 
RAYTHEON JAN6418 x2
Decoding 
Support up to 32bit / 768kHz 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 | 4.4mm, 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, LHDC)
Dimensions 
3.33" (84.7mm)[W] x 5.57" (141.5mm)[H] x 0.70" (18mm)[D]
Weight 
about 17oz (483g)
Feature Enhancements 
Firmware upgrade supported (OTA)
Operating Temperature 
0℃ ~ + 40℃ (32℉~ 104℉)
 
Audio Specifications
Frequency Response 
±0.005dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.003dB (Condition : 20Hz~20kHz) Balanced
±0.006dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.024dB (Condition : 20Hz~70kHz) Balanced
S/N 
120dB @ 1kHz, Unbalanced │ 124dB @ 1kHz, Balanced
Crosstalk 
-136dB @ 1kHz, Unbalanced │ -145dB @ 1kHz, Balanced
THD+N 
0.0005% @ 1kHz, Unbalanced │ 0.0004% @ 1kHz, Balanced
IMD SMPTE 
0.0007% 800Hz 10kHz (4:1) Unbalanced │ 0.0007% 800Hz 10kHz (4:1) Balanced
Output Impedance 
Unbalanced Out 3.5mm (1.5ohm) │ Balanced Out 2.5mm (1.5ohm), 4.4mm(1.4ohm)
 
Clock Source
Clock Jitter 
25ps (Typ)
Reference Clock Jitter 
200 Femto Seconds
 
Storage Capacity
Built-in Memory 
256GB [NAND]
External Memory 
microSD x1 (Max 1.5TB)
 
Battery
Capacity 
5,050mAh 3.8V Li-Polymer
Charge Time 
about 3.5hours (QC3.0 Charging)
Playback Time 
about 10hours (Standard : FLAC, 16bit, 44.1kHz, Unbalanced, Vol.50, LCD Off, LED On, OP AMP Mode)
 
Supported OS
Supported OS 
Windows 7,8,10(32/64bit) MAC OS X 10.7