{"title":"Chord Electronics Digital Upscalers","description":"\u003cp\u003eChord Electronics digital upscalers are FPGA-based outboard processors that sit between a digital source and a DAC, interpolating low-rate PCM up to 768 kHz before conversion. Rob Watts designed both models on custom Xilinx FPGAs running proprietary Watts Transient Aligned filter code, the same engineering DNA inside Chord's reference DAVE DAC. Where most upscalers buy off-the-shelf math, Chord writes its own algorithms and runs them on hardware big enough to compute every coefficient in real time without resorting to software shortcuts.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/chord-electronics-hugo-m-scaler\"\u003eHugo M Scaler\u003c\/a\u003e remains the table-top reference at over a million filter taps, paired specifically with the Hugo TT2 DAC. The new \u003ca href=\"\/products\/chord-electronics-quartet\"\u003eQuartet\u003c\/a\u003e is the flagship: a two-box design built over eight years, with five FPGAs, four million Blackbird WTA taps, an integrated Pulse Array ADC for analog sources, and a Rob-Watts-designed external power supply. The Quartet was engineered specifically to unlock the full digital resolution of the \u003ca href=\"\/products\/chord-electronics-dave\"\u003eDAVE DAC\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"chord-electronics-hugo-m-scaler","title":"Chord Electronics Hugo M Scaler","description":"\u003cp\u003eThe Chord Electronics Hugo M Scaler does one thing, and it does it better than anything else on the market: it upscales digital audio. Over a million WTA filter taps running on a Xilinx XC7A200T FPGA with 740 DSP cores reconstruct the analog waveform between digital samples with a precision that no off-the-shelf DAC chip can touch. Connect it to a Chord DAC via dual BNC, and the difference is not subtle.\u003c\/p\u003e\n\n\u003ch5\u003eKey Features of the Chord Electronics Hugo M Scaler\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,015,808-tap WTA filter\u003c\/strong\u003e on a custom-coded Xilinx XC7A200T FPGA running 740 DSP cores in parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpscales to 705.6kHz or 768kHz\u003c\/strong\u003e from standard 44.1kHz\/48kHz sources (16x native resolution)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive digital inputs:\u003c\/strong\u003e 1x galvanically isolated USB Type B (to 384kHz\/32-bit), 2x BNC coaxial (to 384kHz), 2x optical (to 96kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual BNC output\u003c\/strong\u003e for 768kHz upscaled delivery to compatible Chord DACs (\u003ca href=\"\/products\/chord-electronics-qutest\"\u003eQutest\u003c\/a\u003e, \u003ca href=\"\/products\/chord-electronics-hugo-2\"\u003eHugo 2\u003c\/a\u003e, \u003ca href=\"\/products\/chord-electronics-hugo-tt2\"\u003eHugo TT2\u003c\/a\u003e, \u003ca href=\"\/products\/chord-electronics-dave\"\u003eDAVE\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle BNC S\/PDIF and optical outputs\u003c\/strong\u003e for use with any DAC (limited to that DAC's maximum input rate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVideo mode\u003c\/strong\u003e reduces latency for film and TV content\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStackable with the Hugo TT2 and \u003ca href=\"\/products\/chord-electronics-bertti\"\u003eBerTTi\u003c\/a\u003e\u003c\/strong\u003e in a matched Table Top system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable in Black and Silver\u003c\/strong\u003e with precision-machined aluminum chassis and illuminated spherical controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eWhat the Hugo M Scaler Actually Does\u003c\/h5\u003e\n\u003cp\u003eEvery digital audio file is a series of samples taken at fixed intervals. CD quality captures 44,100 samples per second. Between those samples, the original analog waveform has to be reconstructed by a digital filter. The quality of that reconstruction determines how accurately transients, spatial cues, and tonal decay reach your ears. Most DACs use off-the-shelf filter chips with a few hundred taps. The Hugo M Scaler uses over a million.\u003c\/p\u003e\n\n\u003cp\u003eRob Watts' WTA (Watts Transient Aligned) filter theory holds that accurate transient timing requires extremely long tap-length filters. The M Scaler's 1,015,808 taps represent the longest implementation of this theory outside Chord's reference BLU MKII transport. The filter upscales 44.1kHz to 705.6kHz and 48kHz to 768kHz, filling in the gaps between original samples with mathematically reconstructed data points. The result is passed to the DAC as a much higher-resolution stream than the source file contains.\u003c\/p\u003e\n\n\u003ch5\u003eChord Electronics Hugo M Scaler FPGA Architecture\u003c\/h5\u003e\n\u003cp\u003eThe processing power required for a million-tap filter is enormous. The Hugo M Scaler uses a Xilinx XC7A200T FPGA, the largest in the Artix 7 family, running 740 DSP cores simultaneously. For context, the Hugo TT2 runs 86 cores and the Hugo 2 runs 49. The M Scaler needs nearly nine times the processing power of the TT2 just for the upscaling filter alone. This is why the M Scaler exists as a separate box rather than being built into a DAC: no single FPGA can run both the upscaling filter and the DAC's own processing at this tap length.\u003c\/p\u003e\n\n\u003ch5\u003eDual BNC Connection to Chord DACs\u003c\/h5\u003e\n\u003cp\u003eThe M Scaler's dual BNC output splits the upscaled signal across two cables, one for each channel, delivering 705.6kHz or 768kHz data to any Chord DAC with dual BNC inputs. The Qutest, Hugo 2, Hugo TT2, and DAVE all accept this connection. The combined tap length of M Scaler plus DAC exceeds one million taps, approaching the spatial resolution and timing accuracy of Chord's flagship BLU MKII\/DAVE reference stack at a fraction of the cost.\u003c\/p\u003e\n\n\u003cp\u003eSingle BNC S\/PDIF and optical outputs let you use the M Scaler with non-Chord DACs, though the output rate is limited to whatever that DAC can accept (typically 96kHz or 192kHz). You still get the benefit of the million-tap filter, just at a lower output resolution.\u003c\/p\u003e\n\n\u003ch5\u003eHugo M Scaler Input Flexibility\u003c\/h5\u003e\n\u003cp\u003eFive digital inputs cover most source scenarios. The galvanically isolated USB Type B handles computer, server, and streamer connections up to 384kHz\/32-bit. Two BNC coaxial inputs accept up to 384kHz from CD transports, streamers, or other digital sources. Two optical inputs handle up to 96kHz for TV, Blu-ray, or legacy sources. The galvanic isolation on the USB input breaks ground loops and rejects electrical noise from the source device, keeping the signal clean before upscaling begins.\u003c\/p\u003e\n\n\u003cp style=\"text-align: center; margin: 20px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/mscaler_rear_inline.jpg?v=1773417149\" alt=\"Chord Electronics Hugo M Scaler rear panel showing BNC, optical, USB inputs and dual BNC output\" style=\"display: block; margin-left: auto; margin-right: auto; max-width: 100%;\" loading=\"lazy\"\u003e\n\u003c\/p\u003e\n\n\u003ch5\u003eBuilding a Table Top System\u003c\/h5\u003e\n\u003cp\u003eThe Hugo M Scaler shares the Table Top series dimensions and stacking design with the Hugo TT2 and BerTTi power amplifier. A three-box stack of M Scaler, TT2, and BerTTi creates a complete digital front end and amplification system with over a million taps of processing, balanced and single-ended outputs, and 130 watts per channel. The M Scaler sits on top, feeding the TT2 via short dual BNC cables, with the BerTTi handling speaker drive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/mscaler_black_inline.jpg?v=1773678250\" alt=\"Chord Electronics Hugo M Scaler in black finish\" style=\"width: 100%; height: auto; max-width: 938px; border-radius: 4px;\"\u003e\u003c\/p\u003e\n\u003ch5\u003eHugo M Scaler Video Mode\u003c\/h5\u003e\n\u003cp\u003eA dedicated video mode reduces processing latency for film and TV content, keeping audio synchronized with the picture. The polychromatic spherical controls on the front panel indicate input source, incoming sample rate, and output mode at a glance. The same control interface used across the Hugo and Table Top ranges applies here: input selection, output sample rate, and mode switching all happen through the illuminated spheres.\u003c\/p\u003e\n\n\u003ch5\u003eWhere the Hugo M Scaler Fits in the Chord Lineup\u003c\/h5\u003e\n\u003cp\u003eThe M Scaler is the upgrade that makes the biggest single difference in any Chord digital system. Adding it to a Qutest multiplies the effective tap length from 49,152 to over a million. Adding it to a Hugo TT2 or DAVE does the same, pushing those DACs closer to their theoretical ceiling. It is designed to pair with any Chord DAC that has dual BNC inputs, and it works with non-Chord DACs at reduced output resolution.\u003c\/p\u003e\n\n\u003ch5\u003eThe Listening Room Difference\u003c\/h5\u003e\n\u003cp\u003eWe're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. At this level, every detail matters, and we're here to make sure you get it right. Whether you need help with system matching, setup guidance, or just want to talk through your options before pulling the trigger, owner Mike Hoaston is a phone call away. We don't just ship boxes. We help build systems, and our support lasts well beyond the sale. Call or text 410-239-2020.\u003c\/p\u003e\n\n\u003ch5\u003eChord Electronics Hugo M Scaler Specifications\u003c\/h5\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background-color:#f3f3f3;\"\u003e\n\u003cth style=\"text-align:left;padding:12px;border:1px solid #ddd;width:34%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border:1px solid #ddd;width:66%;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eFilter Technology\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eCustom-coded Xilinx XC7A200T FPGA, 1,015,808-tap WTA filter, 740 DSP cores\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eUpscaling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e44.1kHz to 705.6kHz, 48kHz to 768kHz (16x native resolution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDigital Inputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e1x Galvanically isolated USB Type B (to 384kHz\/32-bit), 2x BNC Coaxial (to 384kHz), 2x Optical (to 96kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDigital Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e1x Galvanically isolated dual BNC (to 768kHz), 1x BNC S\/PDIF, 1x Optical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003ePCM Support\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384, 705.6, 768 kHz (16-32 bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eCompatible Chord DACs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eQutest, Hugo 2, Hugo TT2, DAVE (via dual BNC at 768kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDriver Support\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDriverless on Mac OS X and Linux; driver required for Windows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eExternal switching power supply (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e235mm (W) x 40mm (H) x 238mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e2.55 kg (5.6 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eFinishes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eBlack, Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Chord Electronics","offers":[{"title":"Black","offer_id":42641547591776,"sku":"CHORDMSCALERBL","price":5250.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":42641566335072,"sku":"CHORDMSCALERSL","price":5250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/01_silver_hero_226c54d0-db20-439c-b2ea-8036e49bf3a1.jpg?v=1773168066"},{"product_id":"chord-electronics-quartet","title":"Chord Electronics Quartet Upscaler","description":"\u003cp\u003eThe Chord Electronics Quartet is a reference-class two-box digital upscaler that runs the new Blackbird WTA filter on five Xilinx FPGAs, processing audio with four million filter taps for a tenfold improvement in transient timing accuracy over Chord's previous WTA generation. Eight years in development by Rob Watts, it's purpose-built to unlock the full potential of Chord's flagship DAC, the DAVE.\u003c\/p\u003e\n\n\u003ch5\u003eKey Features of the Chord Electronics Quartet\u003c\/h5\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlackbird WTA Filter Architecture:\u003c\/strong\u003e The new Watts Transient Aligned filter delivers at least a tenfold improvement in transient timing accuracy over Chord's previous WTA designs, with nearly 100 percent of filter coefficients reaching the theoretical ideal sinc function.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFive Xilinx FPGAs:\u003c\/strong\u003e Five times the processing power of the reference DAVE DAC, with 3,700 DSP cores running over two million lines of bespoke code to execute the Blackbird filter without compromise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFour Million Filter Taps:\u003c\/strong\u003e Interpolation complexity beyond any standalone DAC, computed directly in hardware rather than via FFT convolution shortcuts that introduce additional timing errors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Pulse Array ADC:\u003c\/strong\u003e A first for a Chord upscaler. Analog sources, including high-end turntables, feed RCA inputs and benefit from the same upscaling and decimation filtering that eliminates aliasing distortion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-Box Architecture:\u003c\/strong\u003e Audio circuitry isolated from a dedicated Rob-Watts-designed power supply featuring a proprietary pinch-off RF filter architecture, achieving the sonic purity of a battery-powered device from a mains-connected unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e108-bit Lossless Digital EQ:\u003c\/strong\u003e Ten-shelf equalization with plus or minus 18 dB of adjustment across the audio band, with zero degradation of signal quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable Latency:\u003c\/strong\u003e Selectable delay from 10 milliseconds to three seconds for perfect lip-sync during audio-visual playback.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Isolated Connectivity:\u003c\/strong\u003e Galvanically isolated USB-B, dual BNC (or single BNC) and optical inputs, plus dual BNC outputs at 768 kHz optimized for pairing with the DAVE DAC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eEngineered for the Chord Electronics DAVE DAC\u003c\/h5\u003e\n\u003cp\u003eThe Quartet is the upscaler the \u003ca href=\"\/products\/chord-electronics-dave\"\u003eChord Electronics DAVE\u003c\/a\u003e has been waiting for. Just as the \u003ca href=\"\/products\/chord-electronics-hugo-m-scaler\"\u003eHugo M Scaler\u003c\/a\u003e was developed to extract the full potential of the \u003ca href=\"\/products\/chord-electronics-hugo-tt2\"\u003eHugo TT2\u003c\/a\u003e, the Quartet exists to do the same for the DAVE, only at a far deeper level. Five Xilinx FPGAs and four million Blackbird WTA filter taps feed the DAVE's dual BNC inputs at 768 kHz, unlocking the maximum digital resolution Chord's flagship DAC was designed to receive. If you own a DAVE, this is the front end it was built for. If you're considering one, the DAVE + Quartet pairing is the reference combination in Chord's lineup.\u003c\/p\u003e\n\n\u003ch5\u003eEight Years of Development\u003c\/h5\u003e\n\u003cp\u003eThe Quartet represents the most significant advancement in digital audio technology in Chord Electronics' history. Developed over eight years by Chord's Digital Design Consultant Rob Watts, it addresses a fundamental flaw inherent in standard digital playback: the subtle but critical mistiming of transients that obscures spatial cues, blunts attack, and flattens the realism of recorded music. Every architectural decision in the Quartet exists to correct that flaw at a level no other digital component has approached.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/quartet-silver-three-quarter-inline.jpg?v=1779740313\" alt=\"Chord Electronics Quartet two-box digital upscaler in Silver, three-quarter view\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\n\u003ch5\u003eThe Blackbird WTA Filter Architecture\u003c\/h5\u003e\n\u003cp\u003eAt the core of the Quartet's performance is the all-new Blackbird WTA (Watts Transient Aligned) filter. Representing the culmination of 46 years of specialized research, the Blackbird filter uses four million filter taps, the technical measure of interpolation complexity. That figure represents a tenfold increase over previous WTA designs and delivers a corresponding tenfold improvement in transient timing accuracy, while completely eliminating certain transient timing errors that earlier architectures could not.\u003c\/p\u003e\n\u003cp\u003eTechnically, nearly 100 percent of the filter's mathematical coefficients reach the theoretical ideal sinc function: the gold standard for perfect waveform reconstruction. All filtering is executed directly within the hardware architecture. By avoiding the software-industry shortcut of FFT convolution, which converts audio to frequency data and back, the Quartet preserves pure signal integrity and delivers unmatched transient fidelity.\u003c\/p\u003e\n\n\u003ch5\u003eFive Xilinx FPGAs and Hardware-Level Processing\u003c\/h5\u003e\n\u003cp\u003eTo process this complex interpolation algorithm without compromise, the Quartet uses five Xilinx 200T FPGAs, five times the processing power of the reference DAVE DAC. Together they provide 3,700 DSP cores running over two million lines of proprietary code. Every filter calculation is executed in hardware. Nothing is offloaded to a general-purpose processor, nothing is shortcut through frequency-domain conversion. This is what allows the Blackbird filter to operate at full tap depth in real time without introducing latency artifacts that would defeat the purpose of the filter itself.\u003c\/p\u003e\n\n\u003ch5\u003eIntegrated Pulse Array ADC for Analog Sources\u003c\/h5\u003e\n\u003cp\u003eFor the first time in a Chord Electronics upscaler, the Quartet integrates a proprietary Pulse Array ADC. Analog sources, including high-end turntables, connect via RCA inputs and benefit directly from the device's upscaling power. The ADC's advanced decimation filtering eliminates the aliasing distortion that compromises traditional analog-to-digital conversion, outperforming even dedicated studio-grade conversion hardware. For an analog source, the Quartet behaves like the front end of a reference digital chain: take the signal in, eliminate aliasing artifacts, and pass it forward at full Blackbird-grade transient resolution.\u003c\/p\u003e\n\n\u003ch5\u003eTwo-Box Architecture and the External Power Supply\u003c\/h5\u003e\n\u003cp\u003eThe Quartet's two-box configuration isolates sensitive audio circuitry from its power supply. The external PSU is itself a Rob Watts design, incorporating a proprietary pinch-off RF filter architecture, battery-level isolation characteristics, and Chord Electronics' most advanced RF filtering implementation to date. The objective: achieve the exceptional sonic purity of a battery-powered device while running from the mains. Four-stage output isolation further protects the high-rate digital outputs from any noise that could compromise the signal arriving at the DAC.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/quartet-silver-front-inline.jpg?v=1779740314\" alt=\"Chord Electronics Quartet upscaler and external power supply in Silver, straight-on front view\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\n\u003ch5\u003eLossless EQ and Programmable Latency\u003c\/h5\u003e\n\u003cp\u003eThe Quartet includes a subjectively lossless 108-bit digital EQ operating at 705.6 \/ 768 kHz, with ten-band octave control providing plus or minus 18 dB of adjustment. Because the EQ runs at the Quartet's native processing resolution, there is no degradation of signal quality regardless of how aggressively it is used. Programmable latency from 10 milliseconds to three seconds is also included, allowing perfect lip-sync alignment when the Quartet is used in an audio-visual playback chain.\u003c\/p\u003e\n\n\u003ch5\u003eComprehensive Isolated Connectivity\u003c\/h5\u003e\n\u003cp\u003eThe rear panel features comprehensive, isolated connectivity. Digital inputs include two BNC (or dual BNC), two optical, and one galvanically isolated USB-B. Digital outputs include one optical at 192 kHz, one S\/PDIF, and dual BNC at 768 kHz, capable of unlocking the maximum input resolution of the DAVE DAC. Two RCA analog inputs feed the integrated Pulse Array ADC.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/quartet-silver-rear-inline-v2.jpg?v=1779803954\" alt=\"Chord Electronics Quartet rear panel showing isolated USB-B, dual BNC outputs at 768 kHz, optical, RCA analog inputs, and external power supply\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\n\u003ch5\u003ePair With\u003c\/h5\u003e\n\u003cp\u003eThe Quartet is part of Chord Electronics' \u003ca href=\"\/collections\/chord-electronics-choral\"\u003eChoral product range\u003c\/a\u003e, designed to integrate visually and acoustically as a complete reference stack. Pair the Quartet and the DAVE DAC with the \u003ca href=\"\/products\/chord-electronics-ultima-pre\"\u003eChord Electronics Ultima Pre\u003c\/a\u003e for reference analog gain, then close out the chain with a \u003ca href=\"\/products\/chord-electronics-ultima-integrated\"\u003eChord Electronics Ultima Integrated\u003c\/a\u003e for single-chassis power or step up to dedicated \u003ca href=\"\/collections\/chord-electronics-power-amplifiers\"\u003eChord Ultima power amplifiers\u003c\/a\u003e for full reference separates. The \u003ca href=\"\/products\/chord-electronics-choral-ensemble-stand\"\u003eChord Electronics Choral Ensemble Stand\u003c\/a\u003e pictured with the Quartet is sold separately and provides the proper isolation and visual integration that ties the full Choral chain together.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/quartet-silver-on-choral-stand-inline.jpg?v=1779740316\" alt=\"Chord Electronics Quartet on the Chord Choral Ensemble Stand, three-quarter view\" style=\"width:100%;max-width:1000px;height:auto;border-radius:12px;margin:16px 0;\"\u003e\n\n\u003ch5\u003eThe Listening Room Difference\u003c\/h5\u003e\n\u003cp\u003eWe don't just sell high-end audio, we provide a level of service that's as refined as the products we offer. When you invest in a reference upscaler like the Quartet, you deserve more than a box on your doorstep. You deserve a partner who understands the art of sound and is committed to helping you experience it at its absolute best.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOwner Michael Hoatson will personally deliver the Quartet to your home, anywhere in the country.\u003c\/strong\u003e Not a curbside drop-off. Painstaking setup, room placement, full system integration. Third-generation audio family with decades of experience. Bring a system to life.\u003c\/p\u003e\n\u003ch5\u003eChord Electronics Quartet Specifications\u003c\/h5\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color:#f3f3f3;\"\u003e\n      \u003cth style=\"text-align:left;padding:12px;width:34%;border:1px solid #e5e5e5;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"text-align:left;padding:12px;width:66%;border:1px solid #e5e5e5;\"\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eFilter Architecture\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eBlackbird WTA, 4 million taps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eProcessing\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e5 x Xilinx 200T FPGAs, 3,700 DSP cores, 2+ million lines of code\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eEQ\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e108-bit lossless, ten-band octave, plus or minus 18 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eADC\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eProprietary Pulse Array with advanced decimation filtering\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eDigital Inputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e2 x BNC (or dual BNC); 2 x Optical; 1 x USB-B (galvanically isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eDigital Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e1 x Optical (192 kHz); 1 x S\/PDIF; 2 x Dual BNC (768 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e2 x RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eProgrammable Latency\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e10 ms to 3 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e130 W full; 20 W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eDimensions (each box)\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003e7.8 cm H x 33.5 cm W x 15.2 cm D\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eMain unit 3 kg; PSU 3.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eFinishes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e5e5;\"\u003eBlack; Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n","brand":"Chord Electronics","offers":[{"title":"Silver","offer_id":42770232574048,"sku":"CHORDQUARTETSL","price":35995.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":42770232246368,"sku":"CHORDQUARTETBL","price":35995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/chord-electronics-quartet-silver-three-quarter.jpg?v=1779736982"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/collections\/chord-electronics-quartet-silver-three-quarter.jpg?v=1779738439","url":"https:\/\/listenroom.com\/collections\/chord-electronics-digital-upscalers.oembed","provider":"The Listening Room","version":"1.0","type":"link"}