Description
Questyle Sigma Pro is a flagship portable Bluetooth DAC/Amp featuring Questyle's patented Current Mode Amplification and a dual-mono ESS ES9069 DAC layout. It provides massive power (>8W peak) and high-res audio (PCM 768kHz/DSD512) with 3.5mm/4.4mm/6.35mm outputs. Housed in aluminum with Kunlun glass, it includes 3 gain modes and dual USB-C ports. Get this amazing DAC now from the official dealer of Questyle in Bangladesh, Gears for Ears today with an official 1 year warranty.
Latest Flagship SIGMA Pro - Portable DAC with Headphone Amplifier
SIGMA Pro is our flagship portable DAC/amp, built on Questyle's pursuit of audio perfection. It is a technological benchmark that proves performance and portability can coexist, delivering a truly "Portable Professional audio equipment" experience. SIGMA Pro delivers desktop-class specs and sound quality. It houses four sets of Questyle-patented, fully discrete current-mode analog amplifier stages, a dual-mono ESS ES9069 DAC array, and an XMOS XU316 USB interface that supports master-grade PCM 768 kHz/DSD512 decoding and full MQA unfolding. Connectivity has been comprehensively upgraded, featuring multi- machine recording monitoring, 3.5 mm single-ended, and 4.4 mm balanced analog inputs. The durable exterior is crafted from sand- blasted aerospace aluminum and Kunlun glass. Independent dual USB-C ports support charging while listening, with an intelligent battery system ensuring stable, long-lasting power.
Portability Maximized
Built for professional, multi-scenario use, the SIGMA Pro is about the same size as an iPhone 16 Pro Max (155.7 × 85 mm) yet weighs only 330.8 g, delivering desktop-grade performance in a feather-light package.
Designed to impress
Guided by the Bauhaus philosophy of "less is more," SIGMA Pro is a testament to classic industrial design. Its clean lines and pure geometric form remove all unnecessary ornamentation, ensuring every detail serves a precise functional purpose.
Inside, the beautiful components are on full display. The meticulously arranged circuits and gleaming chips create a mechanical work of art, fusing vintage charm with modern tech. More than just a device, SIGMA Pro is a statement piece that instantly commands attention wherever it's placed.
Hardcore Performance
SIGMA Pro features a more powerful, fully discrete and balanced current mode amplifier, delivering significantly increased output power and current. This allows it to effortlessly drive demanding high-impedance headphones for a full, dynamic sound, while also precisely controlling low-impedance IEMs for pure, detailed audio. The four sets of patented amplifiers elegantly resolve the conflict between size, power, and audio performance.
ESS Flagship Stereo DAC ES9069 Dual Mono Configuration + TTA (Three-Tier Architecture) Decoding Framework
To achieve decoding performance beyond customer expectations, the SIGMA Pro utilizes ESS's flagship stereo DAC chips, two ES9069 in a dual mono configuration, combined with the TTA three-level decoding architecture developed by Questyle engineers, delivering performance fully on par with desktop devices.
Dual USB-C Ports
Sigma Pro supports dual USB-C ports, separating data transmission and charging.
Designed for Music Professionals and Audiophiles
The rich interfaces and powerful performance allow Sigma Pro to connect to traditional Hi-Fi equipment, instantly reviving classic devices. It also allows recording and production professionals to connect to monitoring speakers an mixers anytime to start monitoring work on the spot.
Qualcomm Snapdragon Sound and Sony LDAC Certified
The Sigma Pro is equipped with Qualcomm's latest gen of Snapdragon Sound technology, Bluetooth version 5.4, and has been fully certified by Qualcomm Sound and Sony LDAC.
Apple MFi Certified
Sigma Pro is officially Apple MFi certified, ensuring seamless support for the iPhone/iPad and the wider Apple ecosystem. This prevents potential damage caused by uncertified USB accessories.
Specifications
- Patented Current Mode Amplifier with a fully discrete, fully balanced design delivers professional-grade performance from a portable form factor. Balances powerful drive with low power consumption, featuring a peak output power >5V and load distortion as low as 0.0002%.
- Equipped with dual ESS9069 DAC chips and TTA three-tier decoding architecture, breaking the limits of portable devices by offering top-tier decoding performance up to PCM768kHz and DSD512. Mobile devices can now achieve desktop-level resolution.
- Apple MFi certified, ensuring perfect compatibility with iPhone/iPad and seamless integration within the Apple ecosystem.
- Dual certified by Qualcomm Snapdragon Sound and Sony LDAC, enabling wireless enjoyment of lossless audio.
- 3.5mm, 4.4mm, & 6.35mm headphone output jacks, combined with manual gain control, allow easy switching to your personalized listening mode.
- Built-in 4300mAh high-capacity battery provides up to 12 hours of single-charge battery life. The dual USB-C port design supports charging while listening, eliminating battery anxiety.