Questyle QP2R gold

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BIAS Control System

With the high bias setting, just like a supercar tuned to “RACE” mode, the QP2R instantly achieves stronger power and faster responses, fully enhancing the sensitivity of mid and low frequencies. There is a bias indicator on the side of the QP2R, with the standard bias indicated by the orange light and the high bias by the red light. It ensures the QP2R operates solely in pure Class A state when driving different loads, especially heavy loads, and provides a constant flow of high power to the amplifier.

What the press says

A brand new challenger has entered the arena of ultra high-end portable music players. It is more stripped down than its competitors (Cowon and Astel & Kern which we had the opportunity to listen to on the same headphones) but its amplification section delivers sound with a clarity that will make more than one swoon. In this regard, it is the most transparent device we have heard, offering the greatest proximity to the works being listened to. A great sound for a great player.

Automatically translated — Show original (French)

Voilà qu'un tout nouveau challenger rentre dans l’arène des baladeurs très haut de gamme. Il est plus dépouillé que ses concurrents (Cowon et Astel & Kern que nous avons eu l’occasion d’écouter sur les mêmes casques) mais sa section amplification procure un son d’une clarté qui va en faire chavirer plus d’un. De ce côté, c’est l’appareil le plus transparent que nous avons entendu, offrant la plus grande proximité avec les œuvres écoutées. Un grand son pour un grand baladeur.

Technical specifications

Class A quadruple amplification
DAC: Asahi Kasei AK4490
Memory: 64 GB internal plus 200 GB Micro SD expansion
3,700 mAh 3.7 V Li-Polymer battery, 10 hours of battery life
Housing: CNC aluminum
Audio formats
- WAV, FLAC, WMA, MP3, OGG, AAC, ALAC,
- AIFF, DFF, DSF, APE (Normal / High / Fast)

Measurements

Output power
- Unbalanced: 38 mW (32Ω), 9mW (300Ω)
- Balanced: 70 mW (32Ω), 38 mW (300Ω)
Frequency response: 20 Hz to 20 kHz at ±3dB
Signal-to-noise ratio: 100 dB
THD + N: 0.0005%
Output impedance: < 0.1Ω