{"product_id":"the-signal-room-balanced-desktop-dac","title":"The Signal Room | Fully Balanced Desktop DAC with ES9039Q2M and HDMI ARC","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;color:#2b2b2b;\"\u003eEvery Recording Ends as a Voltage. What Happens in Between Is Everything. On a hard drive, a piece of music is nothing but a list of numbers. Between that list and the air in your room sits a single device whose only job is to translate, and the quality of that translation decides whether you hear a performance or a file. The Fosi Audio ZD3 exists for that one task. It is a fully balanced desktop DAC and preamp that accepts digital signal from six different sources and hands it to your amplifier as clean analog voltage, with as little added noise as the chipset can physically manage.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;color:#2b2b2b;\"\u003eThe architecture is deliberately uncompromising. An XMOS XU316 USB interface feeds an ES9039Q2M converter, the flagship ESS chip, while a QCC3031 module handles Bluetooth and a pair of LME49720 op-amps condition the output stage. The measured signal-to-noise ratio is 126dB and total harmonic distortion stays below 0.00008 percent, with support for PCM up to 32-bit and 768kHz and native DSD512. Because the outputs are fully balanced XLR as well as single-ended RCA, the ZD3 can anchor a serious stereo system or drive studio monitors from a desk. The HDMI ARC input, a first for the brand, lets a television feed the same converter, while the 1.5-inch OLED display, remote control, preamp bypass switch, and 12V trigger in and out turn it into a proper system component rather than a dongle.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;color:#2b2b2b;\"\u003eIt is equally at home in three rooms. On a desk it replaces the mediocre converter inside a computer and gives headphones or active speakers a quiet, honest source. In a living-room stereo, HDMI ARC makes it the audio return path for a television while USB and optical serve a streamer. In a studio rack, balanced XLR runs keep long cable lengths free of hum. The available configurations mirror those three lives, from a 12V power supply version to a bundle paired with the ZA3 stereo amplifier and one built around the V3 MONO monoblock.\u003c\/p\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;color:#2b2b2b;font-style:italic;\"\u003eThe signal is only as honest as the room it passes through.\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #eee;\"\u003e\u003cdiv class=\"product-features\" style=\"margin-top:28px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eDesign Notes\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ XMOS XU316 USB interface driving a flagship ES9039Q2M converter\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ Fully balanced XLR outputs alongside single-ended RCA\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ HDMI ARC, optical, coaxial, USB and Bluetooth inputs on one chassis\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ 126dB signal-to-noise ratio with total harmonic distortion below 0.00008 percent\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ PCM up to 32-bit and 768kHz, plus native DSD512 decoding\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ 1.5-inch OLED display with an included remote control\u003c\/li\u003e\n\u003cli style=\"padding:7px 0;font-size:15px;color:#333;\"\u003e✦ Preamp bypass switch and 12V trigger in and out for system linking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\" style=\"margin-top:28px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eSpecification Ledger\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eModel\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eFosi Audio ZD3 desktop DAC and preamp\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eConverter\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eES9039Q2M\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eUSB Interface\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eXMOS XU316\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eBluetooth\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eVersion 5.0, QCC3031 module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eBluetooth Codecs\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eSBC, AAC, aptX, aptX HD\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eInputs\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eUSB, HDMI ARC, coaxial, optical, Bluetooth\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eOutputs\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eBalanced XLR and RCA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eSignal to Noise Ratio\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003e126dB\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eTotal Harmonic Distortion\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eBelow 0.00008 percent\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eMaximum Resolution\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003ePCM 32-bit \/ 768kHz, DSD512\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eDisplay and Control\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003e1.5-inch OLED, remote, preamp bypass, 12V trigger\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;font-size:15px;\"\u003e\n\u003cstrong style=\"display:inline-block;min-width:190px;color:#111;\"\u003eChassis\u003c\/strong\u003e\u003cspan style=\"color:#444;\"\u003eMetal\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\" style=\"margin-top:28px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp style=\"font-size:16px;line-height:1.8;color:#2b2b2b;\"\u003eA desktop near-field system that deserves better than a laptop headphone jack. A living-room stereo fed by a television through HDMI ARC and by a streamer through USB or optical. A studio or mastering desk where the balanced XLR path carries signal across a room without collecting interference. In each case the ZD3 plays the same role, converting with precision and then getting out of the way.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\" style=\"margin-top:28px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eBuyer Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: Does the ZD3 include its own power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eThe standard configuration ships with a 12V power supply. Higher configurations add amplification, such as the ZA3 stereo amplifier or the V3 MONO monoblock, and each bundle is listed as its own option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: Can it drive passive speakers directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eNo. The ZD3 is a DAC and preamp, not a power amplifier, so passive speakers need an amplifier downstream. Active or powered speakers with an analog input connect straight to the RCA or XLR outputs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: What does the HDMI ARC input actually add?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eIt lets a television send its audio back down the HDMI cable into the DAC, so a single system handles both music and screen sound without a separate box or an extra cable run.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: Is the output genuinely balanced?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eYes. The XLR outputs are fully balanced, which is why the converter is described as balanced end to end rather than single-ended with an XLR socket bolted on.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: Which Bluetooth codecs are supported?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eSBC, AAC, aptX and aptX HD, which covers high-quality wireless streaming from phones, tablets and computers without a cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"font-size:15px;margin:0 0 4px 0;color:#111;\"\u003e\u003cstrong\u003eQ: Will it improve an existing stereo setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:15px;margin:0;color:#444;line-height:1.7;\"\u003eIt gives a digital source a lower-noise conversion path and a balanced output, so the audible change is usually a quieter background and cleaner separation between instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S678a671729544fafb603dd50291728cfk.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/A79bf702afc984ba3b3e238a222e80bfcX_1a4bf627-84b7-48a3-8e01-ad9e6f8fbb3f.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Aa183381f77774e86bfef185cee5431aaJ_c1b470b0-4e3f-4e38-b798-ab6451b43551.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/A30cfaf32e8a84acc978ceca1e5623f32d_fbe8af47-1a6a-4d27-9838-99344dbd1650.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Afa40ead13f1e4116ae0869ca0669e4410_a40504d9-dd37-41ff-b3ee-2081c45564ab.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Aac37e08382294b2283ab07cec282fc72h.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S30a2ffaf153443c6aec89a3ba800b284Y.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Saa348add51df4dab8d7120d6bdf573e0H.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Ad059b01f044546afbc6568830201694aY.webp?v=1790907342\" alt=\"Fosi Audio ZD3 balanced desktop DAC\" style=\"max-width:31%;height:auto;border-radius:6px;\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\"name\":\"The Signal Room | Fully Balanced Desktop DAC with ES9039Q2M and HDMI 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