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Questyle - SIGMA Pro Flagship Portable DAC/Amp - 1

Questyle - SIGMA Pro Flagship Portable DAC/Amp

Questyle

Desktop amps & dacs under 100000

    Flagship Portable DAC & Headphone Amplifier

    Dual ESS ES9069 DACs with PCM 768kHz & DSD512

    Patented Current Mode Amplifier with 1200mW Output

    Bluetooth 5.4 with LDAC & aptX Adaptive Support

    Natural & Reference-Grade Questyle Sound Tuning

    Premium Retro Design with Long Battery Life

₹99999   ₹80305

₹ 80,305 ₹ 99,999 Save ₹ 19,694

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Free Shipping on Prepaid Orders

Same day dispatch, if ordered before 2:00 PM. Info Order Placed before 2:00 PM will be shipped within 24 hrs. (Except Sunday and Holidays)

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RETURN POLICY

10 Days Replacement Policy for Manufacturing defects. Info All products are covered by 10 Day Replacement Guarantee. This product is eligible for a free replacement, in case you receive a damaged, defective or different item. Please keep the product in its original condition with all accessories & packaging for a successful return. We may contact you to assess the damage or defect before issuing a replacement. Accessories like cables and eartips are not backed up the manufacturer's warranty.

Please note that physical damage cases need to be brought to our notice within 24 hours.

Simply Contact us through the chat window if you find any issues with your order.

WARRANTY

1 Year Manufacturer's Warranty

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Description

The Questyle SIGMA Pro is a flagship portable audio solution that unifies a high-resolution DAC, powerful amplifier, and advanced Bluetooth receiver in one premium device. Featuring dual-mono ESS ES9069 DACs with support up to PCM 768 kHz and DSD512, and Questyle’s patented Current Mode Amplification with TTA delivering up to 1200 mW output, it ensures low distortion with natural, balanced sound. Connectivity includes USB-C, optical, coaxial, 3.5 mm, 4.4 mm, 6.35 mm, and Bluetooth 5.4 with LDAC/aptX Adaptive. Its retro-inspired aluminum and glass design, intuitive UI, and long battery life make it a versatile flagship for audiophiles on the go.

DUAL-MONO ES9069 DAC ARCHITECTURE

At the heart of the SIGMA Pro is a dual-DAC architecture built around high-performance ESS ES9069 chips, configured in a true dual-mono layout. This design dramatically improves channel separation, lowers noise, and enhances overall resolution. The DAC supports ultra-high-resolution audio formats including PCM up to 768kHz and DSD512, ensuring compatibility with the most demanding modern sources. Full MQA decoding is also supported, allowing studio-quality playback from compatible streaming services with exceptional accuracy and detail.

NEXT-GEN CURRENT AMPLIFICATION & POWER DELIVERY

The SIGMA Pro uses Questyle’s patented Current Mode Amplification (CMA) technology, engineered for extremely low distortion and ultra-fast signal response. Unlike traditional voltage-based designs, CMA delivers higher current accuracy and better control across the frequency range. Combined with Questyle’s TTA (True Transient Amplification) architecture, the SIGMA Pro delivers up to 1200mW of balanced output power, effortlessly driving sensitive IEMs as well as demanding full-size and planar headphones with precision and authority.

COMPREHENSIVE WIRED & WIRELESS CONNECTIVITY SUITE

The SIGMA Pro is designed for maximum flexibility, supporting both advanced wireless and comprehensive wired connectivity. Bluetooth 5.4 enables stable, high-resolution wireless playback with codecs such as LDAC, aptX Adaptive, aptX HD, and Snapdragon Sound. For wired use, it features USB-C digital input, optical and coaxial inputs, plus 3.5mm and 4.4mm analog inputs. Headphone outputs include 3.5mm single-ended, 4.4mm balanced, and 6.35mm, making it compatible with virtually any source or headphone setup.

SIGNATURE NATURAL SOUND TUNING

Questyle always follows a simple sound philosophy and focuses on natural timbre, tonal accuracy and long-term listening comfort. The SIGMA Pro is tuned to deliver a neutral yet musical presentation, preserving the original character of recordings without artificial coloration. Bass remains controlled and textured, mids are clean and lifelike, and treble is extended without harshness. This balanced tuning makes the SIGMA Pro equally suitable for critical studio monitoring and immersive music enjoyment, allowing listeners to hear music exactly as it was intended.

EXTENDED BATTERY LIFE & VERSATILE USAGE SCENARIOS

Equipped with a large 4300mAh battery, the SIGMA Pro delivers up to 12 hours of playback, depending on usage mode and output power. Dual USB-C ports allow simultaneous charging and playback, making it practical for extended listening sessions. Its versatility supports multiple use cases: portable DAC/amp for smartphones, high-end Bluetooth receiver, desktop DAC, or even a compact audio hub for digital and analog sources. This makes the SIGMA Pro a true all-in-one solution for serious audio enthusiasts.

PREMIUM RETRO-INSPIRED CRAFTSMANSHIP & DESIGN

The SIGMA Pro combines modern engineering with a refined retro-inspired design. Its precision-machined aluminum chassis is paired with transparent glass panels, revealing the internal architecture and giving the device a distinctive & technical aesthetic. Physical controls, a clear display and thoughtful layout reinforce its professional character while maintaining a premium feel. The design balances form and function, making the SIGMA Pro perfect for use on a home desktop setup, in a studio, or even as a high-end portable audio companion.

Specifications

Brand Name
Questyle
Model
SIGMA Pro
DAC
Dual ESS ES9069Q (Dual-Mono)
USB Interface
XMOS XU316 • UAC 2.0
Digital Input (USB)
PCM 44.1–768kHz/32-bit • DSD64/128/256/512
Digital Inputs
Optical: PCM 44.1–192kHz/24-bit • Coaxial: PCM 44.1–192kHz/24-bit
Analog Inputs
3.5mm SE In (1Vrms) • 4.4mm BAL In (2Vrms)
Headphone Outputs
3.5mm SE • 4.4mm Balanced • 6.35mm
Output Power
1200mW @32Ω (BAL) • 160mW @300Ω (BAL) • 40mW @300Ω (SE)
MQA
Render & Full Decode
Bluetooth
v5.4
Bluetooth Codecs
aptX Adaptive • aptX HD • LDAC • SBC • LE Audio
THD+N
0.0002% @48kHz/24-bit, 1kHz
SNR
120dB
Battery / Runtime
4300mAh • up to 12h • ~3h charge time

Box Content

    What will you get
  • 1x DAC/Amp
  • 1x Type C To Type C (120cm) Cable
  • 1x USB A To Type C Cable
  • 1x User Manual

    Warranty

    1 YEAR WARRANTY

    Don't worry, Questyle SIGMA Pro comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

    Read more about Concept Kart's warranty policy.

    Shipping Policy

    FREE SHIPPING ON ALL PREPAID ORDERS

    We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

    In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.

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