Chord Quartet Black
Reference-grade upscaler
A reference-class digital audio upscaler featuring groundbreaking proprietary Blackbird WTA filter technology for unprecedented timing accuracy. Powered by 5x Xilinx FPGAs, the Quartet upscaler also benefits from an integrated Pulse Array ADC to upgrade analogue sources, too. Supplied with a sophisticated RF-rejecting power supply.
Advanced proprietary Blackbird WTA Filter: Utilises the most advanced interpolation algorithm to deliver a tenfold improvement in transient timing accuracy.
Five Xilinx FPGAs: Features massive processing capability with 3,700 DSP cores running over two million lines of proprietary code.
Hardware-level processing: All digital filtering is implemented directly in hardware, completely avoiding the timing errors caused by software FFT convolution shortcuts.
Integrated Pulse Array ADC: The first Chord Electronics upscaler to accommodate analogue sources (such as turntables) via RCA inputs, eliminating traditional aliasing distortion through advanced decimation filtering.
Two-box architecture: Separates the sensitive audio circuitry from a dedicated power supply featuring a proprietary pinch-off RF filter architecture to reject mains-borne noise.
108-bit lossless digital EQ: A ten-shelf equalisation system providing ±18 dB of adjustment across frequencies with zero degradation of signal quality.
Comprehensive digital connectivity: Equipped with isolated USB-B, optical in, BNC in and dual BNC outputs supporting maximum resolution up to 768 kHz (optimised for pairing with the DAVE DAC).
Programmable Latency: Offers selectable delay from 10 milliseconds to three seconds to ensure perfect lip-sync during audio-visual playback.
TECH SPEC
Full Power consumption: 130 W
Standby power consumption: 20W
Dimensions: 7.8 cm (H) 33.5 cm (W) 15.2 cm (D) (Also applied to the power supply)
Weight: 3 kg; PSU 3.2 kg
Digital inputs:
• 2x BNC (or dual BNC)
• 72x Optical
• 1x USB-B (galvanically isolated)
Digital outputs:
• 1x Optical 192 kHz
• 1x S/PDIF
• 2x Dual BNC 768 kHz output
Analogue inputs:
• 2x RCA
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