Questyle is the firm behind the brilliant little QCC Dongle Pro, which is a superb audio upgrade for smartphones: it's a tiny transmitter that adds all the key hi-res and lossless codecs to phones, ...
Questyle’s Sigma Pro ($899) and Sigma ($599) portable DAC with headphone amplifiers offer Current Mode Amplification, Bluetooth LE, and LDAC. Previewed at CanJam London 2025, the new Questyle Sigma ...
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Punching above their weight – these flagship portable headphone DACs have the firepower and looks to match
Questyle has launched two high-end portable DAC and headphone amps, the Sigma Pro and Sigma, after showcasing them at CanJam London 2025. The Sigma will be available from late October 2025 and the ...
Questyle's new DAC and headphone amps deliver Hi-Res Audio, LDAC and impressively powerful output for a wide range of headphones and IEMs. Starting at $599, they don't come cheap – but they do have a ...
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