Questyle
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⚠️ Lunar New Year Holiday: Feb 12-23 | Orders placed during this period will ship after Feb 23 Canada, Mexico, Romania, United States: import duty of 10 USD
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Studio-grade performance. Portable form. No compromises.
SIGMA Pro is Questyle’s newest flagship “all-in-one” portable DAC/headphone amplifier, engineered to bring reference monitoring performance into a truly mobile form factor. It combines dual-mono ESS ES9069Q DACs, Questyle’s patented Current Mode Amplifier with fully discrete, fully balanced output stages, and an XMOS XU316 USB interface for master-grade decoding up to PCM 768 kHz/32-bit, DSD512 (Native/DoP), and MQA full decoding.
Optical (Toslink) and Coaxial inputs cover legacy digital transports; USB handles modern lossless playback from phones and computers. With 3.5 mm SE and 4.4 mm balanced analog inputs, SIGMA Pro drops into studio and Hi-Fi chains seamlessly. Switch gain manually to match IEMs, studio headphones or desktop monitors via line-out.
Built on Qualcomm Snapdragon Sound, SIGMA Pro passes both Snapdragon Sound and Sony LDAC certification for robust high-quality wireless audio. It pairs broadly across ecosystems and supports modern Bluetooth codecs for both fidelity and stability.
| Model | Questyle SIGMA Pro |
|---|---|
| DAC | Dual ESS ES9069Q (dual-mono) |
| USB Interface | XMOS XU316 • UAC 2.0 |
| Digital Inputs | USB (PCM 44.1–768 kHz/32-bit; DSD Native 64/128/256/512; DoP DSD64/128/256; MQA render & full decode) Optical (PCM 44.1–192 kHz/24-bit) • Coaxial (PCM 44.1–192 kHz/24-bit) |
| Analog Inputs | 3.5 mm SE In (nominal 1 Vrms) • 4.4 mm BAL In (nominal 2 Vrms) |
| Headphone Outputs | 6.35 mm • 3.5 mm • 4.4 mm balanced |
| Output Power (HP) | 1200 mW @ 32 Ω (BAL) • 160 mW @ 300 Ω (BAL) • 40 mW @ 300 Ω (SE) |
| Performance | THD+N 0.0002% @ 48 kHz/24-bit, 1 kHz sine • SNR 120 dB • FR 20 Hz–20 kHz (+0.8 dB) |
| Gain Control | Line & HP Out: L / H / S (Studio) • IEM Out: L / H |
| Bluetooth | v5.4 • Snapdragon Sound • aptX Adaptive / aptX HD / LDAC / SBC / LE Audio |
| Recording | Stereo recording from analog inputs at 48 kHz/24-bit with live monitoring (USB Audio Class) |
| USB-C Ports | 1× Audio/Data (device-powered), 1× Charge (5 V / 2 A), supports play-while-charging |
| Battery / Runtime | 4300 mAh • up to 12 h • ~3 h charge time |
| Dimensions / Weight | Approx. 155.7 × 85 mm • ~330.8 g |
| System Support | Windows XP–11 (UAC2), macOS, Linux, Android, HarmonyOS, iOS/iPadOS (MFi licensed) |
Worldwide Free Shipping on Hificat, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.
In the event that a shipment is refused delivery by the recipient, is undeliverable, or is returned to sender, Hificat will process a refund to the original payment method used.
If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.
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We collaborate with these courier companies:
Standard Shipping: Yanwen Express
Express Shipping(over $500 can be free): DHL Express, FedEx and SF Express
Hificat has extensive global logistics experience to ensure quality logistics services to consumers.
HiFiCat offers consumers different shipping, depending on the country, a choice of different shipping methods.
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All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 6-10 days to arrive.
Tracking Example
France: https://t.17track.net/en#nums=YT2132021222003141
Germany: https://t.17track.net/en#nums=YT2133621222016083
United Kingdom: https://www.17track.net/?nums=GV779664269GB
Italy:https://t.17track.net/en#nums=YT2133021222011717
Spain:https://t.17track.net/en#nums=YT2129521222003430
United States:https://t.17track.net/en#nums=SUA211205BIUQ1000007
2.EU Country：Filand, Poland, Estonia, Norway, Switzerland, Greece, Sweden, Israel, Czech Republic, Slovenia, Slovakia, Denmark, Netherlands, Latvia, Croatia, Austria, Hungary, Belgium, Bulgaria, Romania, Ireland, Malta, Iceland, Serbia and so on.
All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 10-15 days to arrive.
Filand: https://www.17track.net/?nums=UG324191515YP
Poland: https://www.17track.net/?nums=UG335827360YP
Estonia: https://www.17track.net/?nums=UG363043181YP
Norway: https://www.17track.net/?nums=VR457380806YP
Switzerland: https://www.17track.net/?nums=UG359525911YP
Greece: https://www.17track.net/?nums=UG250851788YP
Sweden: https://www.17track.net/?nums=UG353458343YP
Israel: https://www.17track.net/?nums=UG356134837YP
Czech Republic: https://www.17track.net/?nums=UG320437102YP
Slovenia: https://www.17track.net/?nums=UG349882511YP
Slovakia: https://www.17track.net/?nums=UG349946557YP
Denmark: https://www.17track.net/?nums=UG272480001YP
Netherlands: https://www.17track.net/?nums=UG206078468YP
Latvia: https://www.17track.net/?nums=UG336264373YP
Croatia: https://www.17track.net/?nums=UG331204789YP
Austria: https://www.17track.net/?nums=UG322443180YP
Hungary: https://www.17track.net/?nums=UG313846849YP
Belgium: https://www.17track.net/?nums=UG313858025YP
Bulgaria: https://www.17track.net/?nums=UG309182635YP
Romania: https://www.17track.net/?nums=UG295530616YP
Ireland: https://www.17track.net/?nums=UG286654665YP
Malta:
Iceland: https://www.17track.net/?nums=VR447888050YP
Serbia: https://www.17track.net/?nums=VR447710777YP
Ukraine: https://www.17track.net/?nums=UG331240667YP
Russian Federation: https://www.17track.net/?nums=VR454415418YP
3.South America:Peru, Brazil, Chile
Chile: https://www.17track.net/?nums=UG205949999YP
Brazil: https://www.17track.net/?nums=UG207476109YP
New Zealand: https://www.17track.net/?nums=YE175499582CN
5.Canada By Canada Post, about 2 weeks.
