QPM is the ultimate DAP (Digital Audio Player), and takes the now-familiar Questyle architecture, impeccably machined from 6063 aluminum, and wraps it in 3D glass and an exclusive black anodized finish. QPM incorporates Questyle’s proprietary Current Mode Amplification and Pure Class A BIAS control, and takes them to levels of performance that reach the limits of laboratory test gear: 0.00049% total harmonic distortion + noise, and an astonishing 110dB signal-noise ratio.
Increased power ensures that the QPM will drive any headphone or IEM, via standard 3.5mm single-ended output, or the increasingly-popular 4.4mm fully-balanced output. A full range of digital inputs and audio formats are supported, with PCM processed up to 32-bit/384 kHz, and DSD natively processed up to 256 without conversion to PCM or DoP.
Adding to its versatility, the QPM can connect via USB to mobile phones and used as an external DAC and headphone amplifier, providing greatly improved sound. Finally, a 10-hour battery life and external memory up to 2TB make the QPM useful in the studio, or as a companion on long flights.