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Silver in stock, ready to ship
In Stock and Ready to Ship
Ships in 1 to 3 business days. Monday to Friday, except bank holidays. Subject to stock availability and security checks.
- Silver
Questyle Sigma PRO
Flagship Portable Bluetooth DAC with Headphone Amplifier
- Patented Current Mode Amplifier with discrete balanced design
- Peak output power >5V with 0.0002% distortion
- Dual ESS9069 DAC chips with TTA three-tier decoding
- Supports PCM768kHz and DSD512 decoding
- Apple MFi certified for iPhone/iPad compatibility
- Qualcomm Snapdragon Sound and Sony LDAC certified
- 3.5mm, 4.4mm, & 6.35mm headphone output jacks
- Manual gain control for personalized listening
- 4300mAh battery with 12 hours playback
- Dual USB-C ports for charging while listening
Black
Silver
Black with leather case
Silver with leather case
Regular price
£749.00
Sale price
£749.00
Regular price
Unit price
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Questyle Sigma PRO
Technical specifications
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)
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)
Shipping and Returns
- Dispatch
- 1–3 business days In-stock items, Monday to Friday except bank holidays, subject to stock and security checks.
- Delivery
- Tracked or signed Delivery options and costs are shown at checkout. We don't profit from shipping charges.
- Returns
- 14 days For electronics such as DACs, amps and players, in like-new condition with all original packaging and accessories.
Good to know
- Return shipping is paid by the customer.
- Open box, B-stock, refurbished and clearance items can't be returned.
- Please add a valid phone number at checkout in case we need to verify your identity.
Warranty
- New products
- 1-year manufacturer warranty Most products. The exact warranty is set by the manufacturer.
- Pre-owned & open box
- 3 months B-grade, open box, refurbished, ex-demo and second-hand items.
- Covered
- Defects in materials, parts and workmanship
- Not covered
- Accidents, misuse and unauthorised repairs Including abnormal conditions, deliberate abuse and operator error.
- Making a claim
- Send it to us, we ship it back free You cover shipping to Elise Audio; we pay to send the repaired or replacement product back.
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)
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)
- Dispatch
- 1–3 business days In-stock items, Monday to Friday except bank holidays, subject to stock and security checks.
- Delivery
- Tracked or signed Delivery options and costs are shown at checkout. We don't profit from shipping charges.
- Returns
- 14 days For electronics such as DACs, amps and players, in like-new condition with all original packaging and accessories.
Good to know
- Return shipping is paid by the customer.
- Open box, B-stock, refurbished and clearance items can't be returned.
- Please add a valid phone number at checkout in case we need to verify your identity.
- New products
- 1-year manufacturer warranty Most products. The exact warranty is set by the manufacturer.
- Pre-owned & open box
- 3 months B-grade, open box, refurbished, ex-demo and second-hand items.
- Covered
- Defects in materials, parts and workmanship
- Not covered
- Accidents, misuse and unauthorised repairs Including abnormal conditions, deliberate abuse and operator error.
- Making a claim
- Send it to us, we ship it back free You cover shipping to Elise Audio; we pay to send the repaired or replacement product back.
Customer reviews
Customer Reviews
Based on 1 review
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Excellent service from Elise Audio. These guys are awesome.
The Questyle Sigma Pro is an exceptional device with brilliant SQ and versatile utility. Highly recommend it as a portable dac/amp - premium product.
You can trust Elise to look after you!
