Sources · Chord Electronics

Chord Electronics Quartet

Reference-class digital upscaler, not a DAC — outputs are digital only. Features proprietary Blackbird WTA filter with 4 million taps across 5x Xilinx FPGAs. Integrated Pulse Array ADC (104 MHz noise-shaper) accepts analog sources via 2x RCA inputs. Digital inputs: 2x BNC, 2x Optical, 1x USB-B (galvanically isolated). Digital outputs: 1x Optical (192 kHz max), 2x Dual BNC (768 kHz max). Two-box design with separate Rob Watts-designed RF-rejecting power supply. Includes 108-bit 10-shelf lossless digital EQ (±18 dB). Programmable latency 10 ms to 3 seconds. Priced at £25,000 / $35,995 USD. Compatible with all Chord Electronics DACs; optimised for DAVE. Choral Ensemble Stand sold separately. Specs extracted from web sources: https://chordelectronics.co.uk/product/quartet, https://listenroom.com/products/chord-electronics-quartet, https://www.audiosciencereview.com/forum/index.php?threads%2Fchord-just-released-a-new-upscaler-quartet.71489%2F=