Questyle
CMA 12 Master
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HiFi Editorial
Questyle Sigma and Sigma Pro Portable DAC/AMPs Bring Current Mode Amplification to Mobile Hi‑Fi
Questyle introduced Sigma and Sigma Pro portable DAC/AMPs, aiming to redefine mobile high-fidelity by delivering studio-grade sound quality in compact, travel-friendly designs.
Questyle Sigma miniaturizes the CMA 12 Master, using patented Current Mode Amplification (CMA) with ultra-low 0.0002% distortion and over 5 V output power.
Sigma supports high-resolution playback with PCM up to 768 kHz, DSD512, and a three-stage TTA decoding architecture for enhanced clarity and dynamics.