Astell&Kern A&K SP3000T Copper Edition Tube Digital Audio Player DAP [2nd hand]

SP3000T Copper

Astell&Kern always strives to create more than just sound, focusing on excellence in sound quality.
The SP3000T COPPER Edition demonstrates this philosophy by delivering exceptional sound characteristics.
Copper, known for its excellent sound transmission and resonance properties, typically enhances the brightness and richness of tones in musical instruments. This quality has been repeatedly validated in Astell&Kern products using copper for its outstanding electrical conductivity and high shielding performance. Copper, because of its material properties, oxidizes and discolors upon contact with air. The SP3000T COPPER Edition utilizes over 99.98% pure copper with a special multilayer coating that enhances durability, ensuring it maintains its beautiful color and luster without requiring special maintenance. Created using proven Astell&Kern technology, the SP3000T COPPER Edition offers more than just music—it provides an emotional experience beyond music.

We invite you to experience the emotions delivered by the pure original sound of the SP3000T COPPER Edition.

Technical Specifications:

- Type: Portable DAP player
- Processor: Octa-Core
- Frequency Response:

• Unbalanced: 20Hz – 20kHz (±0.005dB)

• Balanced: 20Hz – 20kHz (±0.003dB)
  Crosstalk:

• -136 dB at 1 kHz (Unbalanced)

• -145 dB at 1 kHz (Balanced)
  THD+N:

• 0.0005% at 1 kHz (Unbalanced)

• 0.0004% at 1 kHz (Balanced)
  Output Impedance:

• 3.5 mm (1.5 ohms) Unbalanced

• 2.5 mm (1.5 ohms), 4.4 mm (1.4 ohms) Balanced
  - Clock Jitter: 25ps (typical)
  - Reference Clock Jitter: 200 femtoseconds
  - Internal Storage: 256 GB
  - External Storage: MicroSD (up to 1 TB)
  - Battery: 5,050 mAh 3.8V lithium-polymer
  - Charging Time: Approximately 3.5 hours
  - Playback Time: Approximately 10 hours
  - Supported Operating Systems: Windows 7, 8, 10 (32/64-bit) – Mac OS X 10.7
  - Display: 5.5" Full HD Touchscreen (1080 x 1920)
  - Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
  - PCM Sampling Rate: 8kHz – 768kHz (8/16/24/32 bit per sample)
  - Native DSD: Up to DSD512 (1 bit, 22.4 MHz) stereo
  - Output Level:

• Unbalanced: 3.3 Vrms

• Balanced: 6.3 Vrms (No load condition)
  DAC:

• 2x AKM AK4191 (Dual modulator)

• 2x AKM AK4499EX (Dual DAC)
  - Vacuum Tube: 2x RAYTHEON JAN6418
  - USB Input: Type-C (for charging and PC/Mac connection)
  - Unbalanced Output: 3.5 mm, 3.5 mm optical output
  - Balanced Output: 2.5 mm (4-pole only), 4.4 mm (5-pole only)
  - Connectivity: Wi-Fi, Bluetooth version 5.0 (A2DP, AVRCP, Qualcomm aptX HD, LDAC, LHDC)
  - Dimensions: 84.7 x 141.5 x 18 mm (W x H x D)