Astell&Kern / IRVACROCA1000TOB

Astell&Kern / ACRO CA1000T is an ideal Head-Fi audio system that goes beyond the limitations of fixed headphone amplifiers and can be installed anywhere you like, and can be powered independently from the built-in battery.

■All-In-One Head-Fi Audio System
- Built-in high-power headphone amplifier that does not require connection to other devices provides detailed headphone sound. In addition, with a variety of input and output terminals, it has excellent connectivity with external audio devices and speakers, making it an all-in-one Head-Fi audio system that allows you to easily enjoy network audio playback and music streaming.

■ World's first adoption of ESS's latest flagship 8ch DAC ES9039MPRO (*)
・ACRO CA1000T is the world's first to be equipped with ESS Technology's latest flagship 8ch DAC, ""ES9039MPRO"" with a built-in stereo hardware MQA renderer, in a dual DAC configuration. It is designed to provide clearer and richer sound than you can imagine. Supports native playback up to PCM 768KHz/32bit and DSD 512 (22.4MHz/1bit). Furthermore, it supports MQA 16X full decoder, and it is also possible to input and output optical digital MQA sound sources. ES9039MPRO is an additional model of ES9039PRO with built-in stereo hardware MQA renderer. It uses more advanced modulation than conventional flagship DACs, reducing power consumption, noise, and distortion inside the DAC, and improving audio performance. Astell&Kern has developed and optimized a newly designed amplifier block to take full advantage of the ES9039MPRO's performance, delivering a balanced and powerful sound with deeper, richer bass and clearer treble. You can also choose your favorite sound style from 7 types of built-in DAC filters.

■Dual Tube (vacuum tube) fully balanced circuit
・The ACRO CA1000T uses a dual tube fully balanced circuit using two KORG Nutube dual triode vacuum tubes, which were first installed in the award-winning A&ultima SP2000T, to provide advanced vacuum tube sound. When installing one vacuum tube in a dual DAC configuration, it is necessary to prepare a separate circuit to convert it to balance before the output terminal. This structure requires a process to convert an unbalanced signal to a balanced signal, and noise is amplified in that process. The ACRO CA1000T uses a completely balanced circuit that separates the left and right channels using two vacuum tubes, achieving a more natural and soft sound.

■Color: Rich Gray
■Body material: Aluminum
■Display: 4.1 inch (720 x 1280) touch screen
■Supported file formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
■Supported sampling rate: PCM maximum: 768KHz (16/24/32bit)
■DSD maximum: DSD512 (22.4MHz/1bit) stereo
■Output level: [Low gain] 2Vrms unbalanced / 4Vrms balanced (no load), [Medium gain] 4Vrms unbalanced / 8Vrms balanced (no load), [High gain] 6Vrms unbalanced / 12Vrms balanced (no load), [Ultra high gain] 8Vrms unbalanced / 15Vrms balanced (no load), [RCA] 2Vrms Unbalanced (no load), [Mini XLR] 4Vrms balanced (no load)
■Recommended headphone impedance: 32 to 600 Ω
■CPU: Quad-Core
■DAC: ESS ES9039MPRO ×2 (Dual-DAC)
■Vacuum tube: KORG Nutube 6P1 ×2
■Power input: USB Type-C (charging only) x 1
■Headphone output: 3.5mm 3-pole unbalanced output, 6.35mm 3-pole unbalanced output, 2.5mm 4-pole balanced output, 4.4mm 5-pole balanced output (with GND connection)
■Analog input: 4.4mm 5-pole balanced input
■Analog output: RCA unbalanced output, Mini XLR (3pin/stereo) balanced output
■Digital input: Coaxial digital (RCA), optical digital (square type), USB Type-C (digital input/output)
■Digital output: Optical digital (also serves as 3.5mm headphone output), USB Type-C (also serves as digital input/output)
■Wi-Fi: 802.11 a/b/g/n/ac (2.4GHz/5GHz)
■Bluetooth: V5.0 (A2DP, AVRCP / QualcommR aptX? HD, LDAC)
■Size (W x H x D): Approx. 104.9mm x 45mm x 155.8mm
■Weight: Approximately 980g
■Firmware update: OTA
■Operating temperature: 0℃ ~ +40℃
■Frequency characteristics: ±0.031dB (20Hz~20kHz) unbalanced / ±0.029dB (20Hz~20kHz) balanced, ±0.033dB (20Hz~20kHz) RCA / ±0.002dB (20Hz~20kHz) Mini XLR, ±0.079dB (20Hz~70kHz) unbalanced / ±0.029dB (20Hz~70kHz) Balanced, ±0.080dB (20Hz~70kHz) RCA / ±0.008dB (20Hz~70kHz) Mini XLR
■S/N ratio: 108dB @ 1kHz, unbalanced / 112dB @ 1kHz, balanced, 121dB @ 1kHz, RCA / 128dB @ 1kHz, Mini XLR
■Crosstalk: -115dB @ 1kHz, unbalanced / -112dB @ 1kHz, balanced, -138dB @ 1kHz, RCA / -145dB @ 1kHz, Mini XLR
■THD+N: 0.004% @ 1kHz, unbalanced / 0.002% @ 1kHz, balanced, 0.0005% @ 1kHz, RCA / 0.0003% @ 1kHz, Mini XLR
■IMD: 0.0007% 800Hz 10kHz (4:1) Unbalanced / 0.0007% 800Hz 10kHz (4:1) Balanced, 0.0007% 800Hz 10kHz (4:1) RCA / 0.0007% 800Hz 10kHz (4:1) Mini XLR
■Output impedance: Unbalanced 3.5mm/6.35mm (1Ω) / Balanced 2.5mm/4.4mm (2Ω)
■RCA: (4Ω) / Mini XLR (9Ω)
■Clock jitter: 25ps (Typ)
■Reference clock jitter: 70ps
■Battery: 10,100mAh 3.8V lithium polymer
■Charging time: Approximately 5 hours (when charging 9V/3A PD2.0)
■Playback time: Approximately 11 hours (FLAC, 44.1KHz/16bit, unbalanced, Vol.40, LCD Off, OP-AMP, low gain)
■Built-in memory: 256GB [NAND] *Includes system area
■External memory support: microSD slot x 1 (maximum 1TB)
■Supported OS: Windows 10 (32/64bit) 11 (64bit) / MAC OS X 10.7 or higher
■Accessories: USB Type-C cable, screen protection sheet, quick start guide
■Country of origin: South Korea
■Manufacturer's warranty: 1 year for main unit / 90 days for accessories