Astell & Kern Acro CA1000 Portable Headphone Amplifier & DAC (Moon Silver)

Specifications

General Specifications

• Model: ACRO CA1000
• Body Color: Moon Silver
• Body Material: Aluminum
• Display: 4.1" x 720" x 1280" touch screen
• 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), DSD512(1bit, 22.4MHz) Stereo
• Output Level (Headphone Out)
  • [Low] Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load)
  • [Mid] Unbalanced 4Vrms / Balanced 8Vrms (Condition No Load)
  • [High] Unbalanced 6Vrms / Balanced 12Vrms (Condition No Load)
  • [Super] Unbalanced 8Vrms / Balanced 15Vrms (Condition No Load)
• Output Level (RCA Out): 2Vrms (Condition No Load)
• CPU: Quad-core
• DAC: ESS ES9068AS x4 (Quad-DAC)
• Decoding: Support up to 32bit / 384kHz Bit-to-Bit playback
• Headphone Outputs
  • Unbalanced (3.5mm, 6.35mm)
  • Balanced (2.5mm, 4.4mm)
• Analog Inputs Outputs
  • RCA (Stereo pair) x1
  • RCA (Stereo pair) x1
• Digital Inputs Outputs
  • Coaxial x1, Optical x1, USB(Type-C) x1
  • Optical(3.5mm) x1, USB(Type-C) x1
• Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
• Bluetooth: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)
• Dimensions (W x H x D): 4.12" x 1.77" x 5.85"
• Weight: about 32.41oz (919g)
• Feature Enhancements: Firmware upgrade supported (OTA)
• Operating Temperature: 0°C ~ + 40°C (32°F ~ 104°F)

Audio Specifications

• Frequency Response
  • ±0.024dB (Condition : 20Hz~20kHz) Unbalanced / ±0.018dB (Condition : 20Hz~20kHz) Balanced /
  • ±0.048dB (Condition : 20Hz~20kHz) RCA
  • ±0.059dB (Condition : 20Hz~70kHz) Unbalanced / ±0.056dB (Condition : 20Hz~70kHz) Balanced /
  • ±0.048dB (Condition : 20Hz~70kHz) RCA
• S/N: 107dB @ 1kHz, Unbalanced / 115dB @ 1kHz, Balanced / 119dB @ 1kHz, RCA
• Crosstalk: -105dB @ 1kHz, Unbalanced / -124dB @ 1kHz, Balanced / -121dB @ 1kHz, RCA
• THD+N: 0.005% @ 1kHz, Unbalanced / 0.002% @ 1kHz, Balanced / 0.0004% @ 1kHz, RCA
• IMD SMPTE: 0.0008% 800Hz 10kHz (4:1) Unbalanced / 0.0004% 800Hz 10kHz (4:1) Balanced / 0.0003% 800Hz 10kHz (4:1) RCA
• Output Impedance: 3.5mm, 6.35mm (1ohm), 2.5mm, 4.4mm (2ohm), RCA (2ohm)

Clock Source

• Clock Jitter: 25ps (Typ)
• Reference Clock Jitter: 70ps

Memory

• Built-in Memory: 256GN [NAND]
• External Memory: microSD x1 (Max. 1TB)

Battery

• Capacity: 8,400mAh 3.8V Li-Polymer
• Charge Time: about 2.5 hours (9V / 3A PD2.0 Fast Charging) / 7 hours (5V 2A General Charging)
• Playback Time: about 10.5 hours (Standard: FLAC, 16bit, 44.1kHz, Unbalanced, Vol.40, LCD Off, Low Gain)

OS

• Supported OS: Windows 7,8,10 (32/64bit), MAC OS X 10.7, and up