{"product_id":"questyle-sigma-open-box","title":"Questyle SIGMA Portable DAC and Headphone Amplifier","description":"\u003cp\u003e\u003cstrong\u003e1 item in stock and available for immediate shipment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/SIGMA_Product_Introduction.webp?v=1781270504\" alt=\"\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eIn stock and ready for immediate dispatch.\u003c\/h2\u003e\n\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/AXYPQudoZ38?si=L7vKdQz1CZR5GVN0\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/500-audioreviews-small.png?v=1782737341\" alt=\"\" width=\"200\" height=\"89\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u0026quot;\u003cspan\u003eReviews\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.audioreviews.org\/questyle-sigma-review\/\"\u003eIt’s been a while since I have been so thoroughly impressed with the performance of a portable source. The Questyle Sigma earns by unreserved recommendation and one of the highest ratings I have given to a portable source on this site. In terms of sheer sound quality, this will be endgame territory for many. Are there better sounding sources out there? Yes, but those cost significantly more and you may not even notice the changes with most IEMs.\u0026quot;\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/cropped-Moonstar-Header-Logo-2.jpg?v=1782736891\" alt=\"\" width=\"360\" height=\"93\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u0026quot;\u003cspan\u003eQuestyle Sigma Review - Where Endgame Begins • Music For The Masses\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/moonstarreviews.net\/questyle-sigma-review\/\"\u003eThe Questyle SIGMA demonstrates careful engineering aimed at delivering high‑resolution audio in a portable yet durable design. Its use of the AK4493 DAC and Current Mode Amplifier architecture provides desktop‑class decoding performance, while the transparent construction and retro‑inspired LED accents contribute to both aesthetics and functionality.\u0026quot;\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eQuestyle SIGMA Review » MOONSTAR Reviews\u003c\/h2\u003e\n\n\u003cp id=\"p-rc_00e9973ebdd04fb1-453\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1094\"\u003eQuestyle SIGMA – Portable DAC \u0026amp; Headphone Amplifier \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1094\"\u003eThe name\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1094\"\u003e “SIGMA” \u003c\/span\u003e\u003cspan class=\"citation-1094\"\u003ederived from the 18th letter of the Greek alphabet, \u003cstrong\u003eΣ\u003c\/strong\u003e, the mathematical symbol for summation\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1093\"\u003eIn this spirit, the portable SIGMA DAC\/amp embodies the sum of all of Questyle’s audio innovations\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp id=\"p-rc_00e9973ebdd04fb1-454\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1092\"\u003eSIGMA was born from an uncompromising pursuit of excellence\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1091\"\u003eIt features an innovative \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1091\"\u003eTTA decoding architecture\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1091\"\u003e and supports decoding rates of up to \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1091\"\u003ePCM 768 kHz\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1091\"\u003e and \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1091\"\u003eDSD512\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1091\"\u003e – performance otherwise achieved only by desktop devices\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1090\"\u003eThe patented \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1090\"\u003eCMA technology (Current Mode Amplifier)\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1090\"\u003e delivers professional performance in a compact format when combined with a fully discrete, fully balanced design\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey features at a glance\u003c\/h2\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-455\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1089\"\u003eOutstanding audio performance:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1089\"\u003e Equipped with the highly acclaimed \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1089\"\u003eAK4493 DAC chip\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1089\"\u003e from AKM and Questyle’s proprietary TTA architecture for desktop-class sound\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-456\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1088\"\u003ePatented amplifier technology:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1088\"\u003e Four sets of fully discrete, fully balanced CMA headphone amplifiers (Global PCT Patent No. US 9,614,483 B2)\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-457\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1087\"\u003eApple MFi-certified:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1087\"\u003e Official certification guarantees seamless compatibility and optimized power management with iPhones, iPads, and the entire Apple ecosystem\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-458\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1086\"\u003ePremium Bluetooth (v5.4):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1086\"\u003e Certified for \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1086\"\u003eQualcomm Snapdragon Sound™\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1086\"\u003e and \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1086\"\u003eSony LDAC\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1085\"\u003eSupports aptX Adaptive (lossless CD quality and high resolution up to 24-bit \/ 96 kHz)\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-459\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1084\"\u003eSpecial mode for in-ear monitors (IEMs):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1084\"\u003e Dedicated IEM signal processing minimizes the signal path and provides ultra-fine 64-step volume control for a completely noise-free listening experience\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-460\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1083\"\u003eNo more battery worries:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1083\"\u003e Built-in \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1083\"\u003e4300 mAh lithium battery\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1083\"\u003e for up to \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1083\"\u003e12 hours of playback\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1082\"\u003eThe dual USB-C system cleanly separates data transmission and charging\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eUSB Playback\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-461\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1081\"\u003ePCM up to 768 kHz \/ 32-bit \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-462\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1080\"\u003eDSD Native: DSD64, DSD128, DSD256, DSD512 \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-463\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1079\"\u003eDSD DoP: DSD64, DSD128, DSD256 \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-464\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1078\"\u003eSupports UAC 2.0 \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eBluetooth Encoding\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-465\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1077\"\u003eSupported codecs: SBC, LE Audio, aptX, aptX HD, LDAC \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCompatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-466\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1076\"\u003eWindows (driverless from 10 1803), macOS, Linux, Android (from 5.1), HarmonyOS, iOS \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMaximum Output Power\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-467\"\u003e\u003cspan\u003e\u0026gt; \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1075\"\u003e1200 mW @ 32 \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\Omega$\u003c\/span\u003e\u003cspan class=\"citation-1075\"\u003e (Balanced) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003ePeak Power\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cspan\u003ePower: \u0026gt; 5 W\u003c\/span\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eTHD+N \/ THD\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-468\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1074\"\u003e0,0002% @ 300 \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\Omega$\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eSignal-to-Noise Ratio (SNR)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-469\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1073\"\u003e120 dB (noise floor measured at -130 dB in the Questyle lab) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eBattery Life\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-470\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1072\"\u003eUp to 12 hours \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCharging Time \/ Max. Charging Current\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\u003ctd\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-471\"\u003e\u003cspan\u003eapprox. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1071\"\u003e3.5 hours \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1070\"\u003e\/ 2 A \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\n\u003ch2\u003eDevice Overview \u0026amp; Connections\u003c\/h2\u003e\n\n\u003ch3\u003eAudio Outputs\u003c\/h3\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-472\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1069\"\u003e3.5 mm Jack (Single-Ended):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1069\"\u003e For standard headphones and IEMs\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-473\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1068\"\u003e4.4 mm Jack (Balanced):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1068\"\u003e Fully balanced output for maximum dynamics\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-474\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1067\"\u003eNote:\u003c\/span\u003e\u003cspan class=\"citation-1067\"\u003e The outputs can be switched from headphone operation to \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-1067\"\u003eLine Out\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1067\"\u003e can be switched to connect the device to active studio monitors or Hi-Fi systems\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eIntelligent Dual USB-C System\u003c\/h3\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-475\"\u003e\u003cspan\u003e\u003cb\u003eUSB DAC IN (Audio Port):\u003c\/b\u003e Transmits audio data only. \u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1066\"\u003eThe device does not draw power from the smartphone, preserving the phone\u0026#39;s battery\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-476\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1065\"\u003eCHARGE IN (Power Port):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1065\"\u003e Separate port exclusively for charging the internal battery (supports charging during use)\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eControls \u0026amp; Switches\u003c\/h3\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-477\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1064\"\u003ePower Button:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1064\"\u003e Press and hold for 2 seconds to turn on\/off \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1063\"\u003e; short press to display the battery level\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-478\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1062\"\u003eFunction Button:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1062\"\u003e Short press to switch the input source \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1061\"\u003e; press and hold to enter Bluetooth pairing mode\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-479\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1060\"\u003eVolume Buttons (+ \/ -):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1060\"\u003e Single click for 1 level \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan class=\"citation-1059\"\u003e; press and hold for continuous adjustment\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-480\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1058\"\u003eIEM\/HP Switch:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1058\"\u003e Switches between optimized IEM mode and standard headphone mode\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-481\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1057\"\u003eGain Switch \u0026amp; HOLD Switch:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1057\"\u003e For adjusting the gain and locking the buttons\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eLED Status Indicators\u003c\/h3\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-482\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1056\"\u003eAudio Source:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1056\"\u003e Separate LEDs for Bluetooth, USB, gain level, data stream, and active IEM mode\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-483\"\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"citation-1055\"\u003eBattery \u0026amp; Volume Indicator:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-1055\"\u003e LED matrix for battery levels (25%, 50%, 75%, 100%)\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\n\u003ch2\u003ePackage Contents \u0026amp; Accessories\u003c\/h2\u003e\n\n\u003cul\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-484\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1054\"\u003eQuestyle SIGMA Portable DAC\/Amp Unit\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-484\"\u003e\u003cspan style=\"font-size: 0.875rem\"\u003eUSB-C to USB-C Cable (12 cm)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-486\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1052\"\u003eUSB-C to USB-C Cable (120 cm) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-487\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1051\"\u003eUSB-A to USB-C Adapter \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003cli\u003e\u003cp id=\"p-rc_00e9973ebdd04fb1-488\"\u003e\u003cspan\u003e\u003cspan class=\"citation-1050\"\u003eWarranty Card \u0026amp; User Manual \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Audio Essence","offers":[{"title":"Default Title","offer_id":56884709163394,"sku":null,"price":469.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/SIGMA3.jpg?v=1781270240","url":"https:\/\/audioessence.ch\/en\/products\/sigma-portable-dac-and-headphone-amplifier-1","provider":"Audio Essence","version":"1.0","type":"link"}