{"id":26427,"date":"2026-04-18T22:59:06","date_gmt":"2026-04-18T21:59:06","guid":{"rendered":"https:\/\/gamerunlocked.pt\/?post_type=product&p=26427"},"modified":"2026-04-19T00:45:09","modified_gmt":"2026-04-18T23:45:09","slug":"fosi-audio-ds3-es9039q2m-usb-c-dac-amp-dongle-gaming-spatial-audio","status":"publish","type":"product","link":"https:\/\/gamerunlocked.pt\/en\/product\/fosi-audio-ds3-es9039q2m-usb-c-dac-amp-dongle-gaming-spatial-audio\/","title":{"rendered":"Fosi Audio DS3 \u2013 ES9039Q2M USB-C DAC\/AMP Dongle, 7.1 Spatial Audio and Gaming FPS Mode"},"content":{"rendered":"\t\t
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Fosi Audio DS3 \u2013 ES9039Q2M USB-C DAC\/AMP Dongle, 7.1 Spatial Audio and Gaming FPS Mode<\/h2>

The Fosi Audio DS3 is the first battery-free dongle DAC\/AMP to integrate XMOS POWERED processing \u2014 a dual-core 1.6GHz engine paired with ESS ES9039Q2M, delivering 122dB SNR and THD+N below 0.0003% in a 16g body. It runs two distinct modes: HiFi for critical listening and Gaming for spatial audio on PS5, Switch, and PC \u2014 with no driver installation required for either.<\/p>

Chipset Architecture<\/h3>

The ES9039Q2M is ESS's compact flagship DAC, supporting PCM up to 32bit\/768kHz and native DSD512. The XMOS POWERED dual-core processor handles USB audio decoding with stable, jitter-free lossless streaming \u2014 this is not a standard USB controller. The combination delivers 120mW @32\u03a9 on the 3.5mm single-ended output and 220mW @32\u03a9 on the 4.4mm balanced output, with a noise floor low enough for sensitive IEMs.<\/p>

Gaming Mode \u2014 Hardware Spatial Audio<\/h3>

In UAC 1.0 mode, the DS3 activates hardware-level 7.1 spatial audio processing. Fosi's built-in algorithm reconstructs 7.1-channel game audio into a 360\u00b0 soundstage without any software. A dedicated FPS mode further amplifies directional cues \u2014 footsteps, reload sounds, gunfire \u2014 for positional accuracy in competitive titles. Switch between no effect, FPS, and 7.1 with a button combination on the device itself. Compatible with PS5, Nintendo Switch, and PC, plug-and-play.<\/p>

HiFi Mode and PEQ<\/h3>

UAC 2.0 mode activates the full 32bit\/768kHz decoding path for critical listening. Eight selectable digital filters let you tune the reconstruction filter to your preference. The 8-band PEQ is adjustable via a browser-based web control panel with hardware-level processing \u2014 EQ changes apply in the signal path without software intermediaries or latency. Volume settings are remembered independently between UAC 1.0 and UAC 2.0 modes.<\/p>

Build and Design<\/h3>

CNC-machined aerospace-grade aluminum chassis with a tempered glass skylight that makes the internal circuit board visible. Two hardware volume buttons on the side, an LED status indicator on the rear. Fosi's signature orange bezel around the glass face. At 16g and 55 \u00d7 20 \u00d7 11mm, it disappears in a pocket or stays flush on a phone. Available in Galaxy (silver) and Obsidian (black) to match the Fosi IM4 IEMs.<\/p>

Gamer Unlocked Take<\/h3>

The DS3 is where a dongle stops being a dongle and starts being a proper portable DAC. The XMOS POWERED processor is a genuine differentiator \u2014 it's not just a better USB controller, it's what allows the ES9039Q2M to perform at its actual ceiling rather than being bottlenecked by the interface. The hardware spatial audio is the feature that makes this relevant for gamers who don't want a desktop setup: PS5 plug-and-play 7.1, no drivers, no software, just plug in and use the button combination to enable FPS mode.<\/p>

At this price, the competition is real \u2014 FiiO KA15 has more raw power, others have screens. But none of them combine the XMOS POWERED architecture, hardware gaming modes, balanced output, and PEQ in something this light. For IEM users who game and listen, this is the most complete dongle we've put in the catalogue. Not for power-hungry planars at high impedance \u2014 if that's your use case, the K7 is the right answer.<\/p>

\u26a0\ufe0f iOS Note:<\/strong> Requires a USB-C to Lightning or USB-C to USB-C adapter for use with iPhones. Not included.<\/p>

\u26a0\ufe0f Gaming Mode Note:<\/strong> 7.1 Spatial Audio and FPS mode work in UAC 1.0 only. Full-resolution 768kHz decoding requires UAC 2.0 (HiFi mode).<\/p>

IN THE PACKAGE<\/h4>
  • 1\u00d7 Fosi Audio DS3 DAC\/AMP Dongle<\/li>
  • 1\u00d7 USB-C to USB-C Cable<\/li>
  • 1\u00d7 USB-C to USB-A Adapter<\/li>
  • 1\u00d7 Quick Start Guide<\/li>
  • 1\u00d7 User Manual<\/li><\/ul><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    SPECIFICATION<\/th>\nDETAILS<\/th>\n<\/tr>\n<\/thead>\n
    Model<\/td>\nFosi Audio DS3<\/td>\n<\/tr>\n
    Type<\/td>\nPortable USB-C DAC\/AMP Dongle<\/td>\n<\/tr>\n
    DAC Chip<\/td>\nESS ES9039Q2M<\/td>\n<\/tr>\n
    Processor<\/td>\nXMOS POWERED \u00b7 Dual-core 1.6GHz (16-core architecture)<\/td>\n<\/tr>\n
    Max Decoding<\/td>\nPCM 32bit \/ 768kHz \u00b7 DSD512 native \u00b7 DSD256 DoP<\/td>\n<\/tr>\n
    Output Power (3.5mm SE)<\/td>\n120mW @32\u03a9<\/td>\n<\/tr>\n
    Output Power (4.4mm BAL)<\/td>\n220mW @32\u03a9<\/td>\n<\/tr>\n
    SNR<\/td>\n\u2265122dB<\/td>\n<\/tr>\n
    THD+N<\/td>\n<0.0003%<\/td>\n<\/tr>\n
    Headphone Impedance<\/td>\n16\u03a9 \u2013 300\u03a9<\/td>\n<\/tr>\n
    Outputs<\/td>\n3.5mm SE \u00b7 4.4mm Balanced<\/td>\n<\/tr>\n
    Input<\/td>\nUSB-C male<\/td>\n<\/tr>\n
    UAC Mode<\/td>\nUAC 1.0 (Gaming\/Spatial Audio) \u00b7 UAC 2.0 (HiFi)<\/td>\n<\/tr>\n
    Gaming Features<\/td>\n7.1 Spatial Audio \u00b7 FPS Sound Engine \u00b7 Hardware-level processing<\/td>\n<\/tr>\n
    Digital Filters<\/td>\n8 selectable<\/td>\n<\/tr>\n
    PEQ<\/td>\n8-band \u00b7 Web-based control panel \u00b7 Hardware-level<\/td>\n<\/tr>\n
    Volume Memory<\/td>\nYes (independent per UAC mode)<\/td>\n<\/tr>\n
    Controls<\/td>\n2 hardware volume buttons \u00b7 LED status indicator (rear)<\/td>\n<\/tr>\n
    Compatibility<\/td>\nPC \u00b7 PS5 \u00b7 Nintendo Switch \u00b7 Android \u00b7 iOS (adapter required)<\/td>\n<\/tr>\n
    Power<\/td>\nBus-powered via USB-C (battery-free)<\/td>\n<\/tr>\n
    Construction<\/td>\nCNC aerospace aluminum \u00b7 Tempered glass skylight \u00b7 Orange bezel<\/td>\n<\/tr>\n
    Product Weight<\/td>\n16g<\/td>\n<\/tr>\n
    Dimensions<\/td>\n55 \u00d7 20 \u00d7 11mm<\/td>\n<\/tr>\n
    Available Colors<\/td>\nGalaxy (Silver) \u00b7 Obsidian (Black)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

    Key Features:<\/strong><\/h4>\n
      \n
    • XMOS POWERED Dual-Core 1.6GHz and ES9039Q2M<\/strong> World’s first battery-free dongle with XMOS POWERED integration. SNR 122dB and THD+N below 0.0003% \u2014 measured, not marketed.<\/li>\n
    • 4.4mm Balanced Output, 220mW @32\u03a9<\/strong> Fully balanced output for IEMs with balanced cables. 3.5mm SE delivers 120mW @32\u03a9. DSD512 native, PCM 32bit\/768kHz.<\/li>\n
    • 7.1 Spatial Audio and FPS Sound Engine<\/strong> Hardware-level spatial processing in UAC 1.0 gaming mode, no drivers needed. Dedicated FPS mode amplifies footsteps and directional cues. Works on PS5, Switch, and PC plug-and-play.<\/li>\n
    • 8-Band PEQ via Web Control Panel<\/strong> Adjust EQ from a browser without degrading signal quality. Eight digital filter options included. Volume memory retained in both UAC 1.0 and UAC 2.0 modes.<\/li>\n
    • 16g, 55 x 20 x 11mm \u2014 CNC Aluminum and Tempered Glass<\/strong> Aerospace-grade aluminum chassis with a tempered glass skylight showing internal circuitry. Orange bezel, two hardware volume buttons, LED status indicator on the rear.<\/li>\n<\/ul>\n","protected":false},"featured_media":26428,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[726],"product_tag":[1966,1967,1969,1964,1968,1963,1470,1970,1906,1965],"class_list":{"0":"post-26427","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-dac-amp","7":"product_tag-4-4mm-balanced-dongle","8":"product_tag-7-1-spatial-audio-dongle","9":"product_tag-dsd512-dongle","10":"product_tag-es9039q2m-dac","11":"product_tag-fps-audio-dongle","12":"product_tag-gaming-dac-dongle","13":"product_tag-portable-dac-amp","14":"product_tag-ps5-dac-dongle","15":"product_tag-usb-dac-dongle","16":"product_tag-xmos-dac","17":"pa_brand-fosi-audio","19":"first","20":"instock","21":"taxable","22":"shipping-taxable","23":"purchasable","24":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product\/26427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/comments?post=26427"}],"version-history":[{"count":4,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product\/26427\/revisions"}],"predecessor-version":[{"id":26441,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product\/26427\/revisions\/26441"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/media\/26428"}],"wp:attachment":[{"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/media?parent=26427"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product_brand?post=26427"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product_cat?post=26427"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/gamerunlocked.pt\/en\/wp-json\/wp\/v2\/product_tag?post=26427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}