AKM
AK4493
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T3 Audio
Questyle Introduces Sigma and Sigma Pro: Portable Hi-Res Audio DAC/Amps for Exceptional Sound
Questyle has introduced the Sigma and Sigma Pro portable DAC/amps, delivering high-resolution audio with remarkable output power in a compact design.
The Sigma Pro features dual ESS ES9069 DACs in a dual-mono configuration, supporting up to 32-bit/768kHz PCM and DSD512 audio formats.
Both models include balanced 4.4mm outputs, LDAC, Snapdragon Sound, and Bluetooth 5.4 technology, enhancing connectivity and audio quality.
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T3 Audio
HiFi Editorial
Questyle SIGMA: Portable Headphone Amplifier DAC with Current Mode
Questyle SIGMA, a portable DAC/headphone amplifier, integrates cutting-edge technologies for superior audio quality in a compact design.
Equipped with AKM AK4493 DAC chip, SIGMA supports PCM decoding up to 32-bit/768kHz and native DSD up to DSD512.
Features a symmetrical current-mode amplifier architecture with four modules, offering improved linearity and reduced distortion.