{"product_id":"gustard-r30-fully-discrete-r2r-network-streaming-dac","title":"GUSTARD R30 Fully-Discrete R2R Network Streaming DAC","description":"\u003ch1\u003e\u003cstrong\u003eDigital done differently \u003c\/strong\u003e\u003c\/h1\u003e\n \u003cp\u003eThe R30 is made for listeners who want digital done differently. Decoding is handled by a fully discrete R2R ladder network: resistors switching in perfect precision rather than the high-frequency 0\/1 toggling of delta-sigma DACs. The result is a sound that’s natural, detailed, and free of the digital edge. Around this core feature, the R30 applies serious engineering: true 1-bit DSD decoding, FPGA-based clock management, a self-developed network bridge, and a discrete Class-A analog output stage. Together, these elements create a DAC that sounds utterly natural. \u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eOrganic-sounding discrete R2R ladder \u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe R30’s discrete R2R module converts digital signals directly through a resistor ladder network. This design demands extreme resistor matching and precision, but it pays off with a more organic-sounding conversion. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eTrue 1-bit DSD decoding\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eNative support for DSD1024 means the R30 can handle data density 1,024 times that of CD audio. In DIRECT DSD mode, the bitstream bypasses PCM conversion entirely, decoded straight through a 1-bit switching array, which preserves micro-details and timing integrity.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eSmart digital filtering\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThree filter modes—Linear Sharp, Minimum Slow, and Super Slow—let you choose how the DAC shapes your sound. Built on adaptive multi-order algorithms, the filtering reduces aliasing noise while enhancing resolution and dynamics. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eFPGA-powered control\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eA programmable FPGA handles clock management, PLL shaping, depop switching, and signal routing. This architecture lays the foundation for low jitter, stable synchronization, and customizable logic control that stays rock solid no matter how intricate the music gets. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003ePrecision OCXO clocking\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe SC-cut crystal OCXO clock keeps jitter to imperceptible levels thanks to exceptional thermal stability and stress resistance. The R30 also accepts an external 10MHz clock input if you want to sync it to your reference system.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eA network bridge built for music\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe R30 comes with a self-developed CelWare-based network bridge system. This isn’t a generic Linux box. It’s a playback-dedicated design that strips away non-audio processes, minimizing jitter and latency. Protocol support includes Roon Bridge, AirPlay, HQPlayer NAA, UPnP\/DLNA, Spotify Connect, MConnect, BubbleUPnP, and QQMusic.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eClass-A analog stage\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eInstead of integrated op-amps, the R30’s discrete Class-A low-pass filter stage lets each component be tuned individually. That means better control of frequency response, harmonic character, and transient handling. \u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003ePassive relay preamplifier\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eWith its R2R relay-based volume control, the R30 doubles as a passive analog preamp. Switch into pure bypass mode to use it strictly as a DAC, or connect it directly to powered monitors or a power amp and control volume remotely.\u003cbr\u003e\u003c\/p\u003e\n \u003ch2\u003e\n \u003cstrong\u003eXMOS USB with isolation\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h2\u003e\n \u003cp\u003eThe USB input runs on an XMOS XU216 interface, supporting PCM768k and DSD512. Independent voltage regulation and isolated left\/right channels keep crosstalk and interference to a minimum, ensuring your USB connection doesn’t become a weak link.\u003cbr\u003e\u003c\/p\u003e\n \u003ch3\u003e\n \u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eFully discrete R2R ladder DAC\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eNative DSD1024 decoding (via I²S)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTriple digital filter modes: Linear Sharp, Minimum Slow, Super Slow\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eFPGA programmable logic for clock and signal control\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOCXO clock with SC-cut crystal and external 10MHz input\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSelf-developed CelWare network bridge with Roon, AirPlay, UPnP, NAA, Spotify\u003c\/li\u003e\n \u003cli\u003esupport\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDiscrete Class-A analog output stage\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRelay-based passive preamp with pure bypass mode\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eBalanced and unbalanced analog outputs (XLR, RCA)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eXMOS XU216 USB interface with multi-stage filtering\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eWeb-based control via “\/\/r30.local”\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDigital performance\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003ePCM: up to 1536kHz (I²S), 768kHz (USB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDSD: up to DSD1024 (I²S), DSD512 (USB)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDigital filter modes: Linear Sharp, Minimum Slow, Super Slow\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eAnalog output\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eFrequency response: 20Hz–20kHz \/ ±0.2dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDynamic range: \u0026gt;123dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eSNR: \u0026gt;121dB\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eCrosstalk: –139dB @10kHz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTHD+N: ≤0.00145% @1kHz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eIMD: ≈0.002% @ –1dBFS\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRCA: 2.5Vrms fixed, 100Ω\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eXLR: 5.1Vrms fixed, 100Ω\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eClocking\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eInternal: SC-cut crystal OCXO with ultra-low jitter\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eExternal clock input: 10MHz BNC, 50Ω, 0–20dBm\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eDigital inputs\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eUSB (XMOS XU216)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eCoaxial\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eOptical\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eAES\/EBU\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDual I²S (adjustable pinout)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eLAN (100\/1000 Mbps, Roon\/AirPlay\/UPnP\/NAA\/Spotify)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTF card reader\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eOutputs\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003eXLR balanced L\/R\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRCA unbalanced L\/R\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eTrigger in\/out\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003eGeneral\u003cbr\u003e\n \u003cul\u003e\n \u003cli\u003ePower: AC 115V\/230V, 50\/60Hz\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eConsumption: \u0026lt;35W\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eDimensions: 16.9 × 11.8 × 3.1in (430 × 300 × 80mm; incl. feet 94mm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eShipping dimensions: 20.9 × 15.7 × 7.1in (530 × 400 × 180mm)\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eWeight: 22lbs (10kg)\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\n \u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003cbr\u003e\n \u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eR30 discrete R2R DAC\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003ePower cable\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eRemote control\u003cbr\u003e\n \u003c\/li\u003e\n \u003cli\u003eUser manual\u003cbr\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cstrong\u003eFeatured reviews\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cp\u003e\u003cstrong\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Ln1eVCDFM9Y?si=oks1qLhPGW0Z-OPa\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\"A flawless-sounding unit. Much better components than its predecessor. Holds its own against even pricier units. I believe that it's up there with the best units I've ever heard.\" -SoundNews\u003c\/em\u003e\u003c\/p\u003e","brand":"Gustard","offers":[{"title":"Black","offer_id":46866217173167,"sku":"APS-1118-1","price":3599.99,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46866217205935,"sku":"APS-1118-2","price":3599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-gustard-dac-digital-to-analog-converter-gustard-r30-fully-discrete-r2r-network-streaming-dac-1186129361_00216fc1-09e4-47af-8cd8-65ddcf193590.jpg?v=1777716304","url":"https:\/\/freshized.com\/products\/gustard-r30-fully-discrete-r2r-network-streaming-dac","provider":"Freshized","version":"1.0","type":"link"}