DACs — Questyle SIGMA Pro
Description, images, technical data and specifications
Questyle SIGMA Pro
Image source — © Questyle
The Questyle Sigma Pro is a portable headphone amplifier DAC based on two DAC chips from ESS Technology with support for high—resolution audio decoding and Current Mode amplifiers capable of handling the most sophisticated headphones. The body of the Questyle Sigma Pro DAC is made of brushed aluminum with sandblasting and is equipped with physical controls, including a volume control wheel, and a display showing active modes and current settings.
Specifications
Model name
SIGMA Pro
Conversion type
N/A
Engine
ESS9069 DAC
DSD compatability
Yes
Parameters
up to PCM 32 bit / 768kHz and DSD512
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Gain (dBu)
N/A
Output Level (balanced) (V)
N/A
Output Level (single-ended) (V)
N/A
Input Impedance (balanced) (Ω)
N/A
Input Impedance (single-ended) (Ω)
N/A
Output Impedance (balanced) (Ω)
N/A
Output Impedance (single-ended) (Ω)
N/A
Analog outputs
N/A
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (% at 22 kHz)
0.0002
Dimensions (mm)
N/A
Weight (kg)
N/A
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