The Questyle QP2r is a sonic tour-de-force that fits in your pocket! With sound that can compete with quality desktop rigs, the QP2r is the audiophile's choice for single-box portable audio.
This is Dan's favorite portable audio player for a great reason, the current mode amplification works superbly with all our planar headphones. The QP2R inherits Questyle's Current Mode Amplifier built with all discrete circuit and operating in a pure Class A working state but implemented as a fully-balanced output. The amplifier circuits are deployed in four groups that work as "out of phase" pairs to decrease distortion, enhance clarity and increase resolution. The four amp circuits are located on both front and back of the PCB, which significantly shortens the distance that signals bypass on the PCB, improving audio performance to deliver an astoundingly low 0.0005% THD with less than 0.1Ω output impedance.
DAN'S MINI REVIEW
I travel a lot, and have always struggled with the limitations of many portable products on the market. There are some fantastic DAC/Amp combos, but you need a source, and hence you have multiple boxes and cables that are definately not "pocket friendly." Some single player devices offer great convenience, with support for streaming services such as Tidal, but in our experience the affordable units struggled either with software issues or simply having enough juice to power a planar headphone. One product I used to use a lot was the QP1r, but I was always put off by the usability of the "wheel" as it was implemented.
Enter the new Questyle QP2r which has addressed the "wheel" usability concerns of the QP1r and has dramatically enhanced the audio quality, making it my new favorite all-in-one portable audio player. While the UI is not my favorite, and the product doesn't support streaming audio, the new wheel makes navigation simple enough that this is no longer a concern for me, other than flipping through too many albums when viewing the library in "album" view, which just takes too long when you have 600+ albums on a 256GB mini-SD card.
On to the sound, the most important part: the QP2r's balanced output delivers a surprisingly resolving and transparent delivery that is detailed, fun and immersive. The overall impression the QP2r leaves me with every time I use it is that it's remarkably coherent and spacious with a deep, three dimensional soundstage, something I often find absent in portable gear. Further, it lacks that over-etched solid state sound so many portable devices have, that perhaps can deliver "detail" but fails to sound musical. The QP2r just gets it right, it's a superb sounding portable device.
The only practical concern on power is that this is not the most powerful portable player. If you like to really play it loud (as in to levels that will harm your ears), the amp will run out of steam and start clipping. It's obvious when it does. My best guestimate is that this happens around 100+ dB, so it's never been an issue to me as I keep volume at lower levels so as to not go deaf (that's a friendly hint).
When paired with the AEON Flow or ETHER C Flow closed headphones, well recorded music has a remarkably open sound, making this an exceptional device for all-around fun.
Soundstage is exceptional
Tone is spot on
Resolution rivals many desktop rigs of comparable price
Even in high-bias mode the battery lasts at least 4 hours
Balanced output is particularly enjoyable
Navigation is not the easiest for a portable player
Power is a little low if you want LOUD big bass music
Audio Formats Supported: WAV, FLAC, WMA, MP3, OGG, AAC, ALAC, AIFF, DFF, DSF, APE(Normal/High/Fast)
Sample Rate: PCM 32kHz - 384kHz (16/24/32Bit)
DSD Native: DSD64(1Bit 2.8MHz),
DSD128(1Bit 5.6MHz), DSD256(1Bit 11.2MHz)
DAC: AKM AK4490 DAC chip
Outputs: Headphone out(3.5mm)/Optical out(3.5mm) / Balanced out(2.5mm)
Output Level: Unbalanced 1.8 Vrms / Balanced 3.6 Vrms
Output Power: Unbalanced RL=32Ω, Pout=38mW; RL=300Ω, Pout=9mW
Balanced RL=32Ω,Pout=70mW; RL=300Ω, Pout=38mW
Frequency Response: ±0.1dB (20Hz-20kHz)
S/N 100dB @ 1kHz, Unbalanced / 102dB @ 1kHz, Balanced
THD+N 0.0006% @ 1kHz, Unbalanced / 0.0005% @ 1kHz, Balanced
Output Impedance: 0.1Ω
Charging & Data Transfer: TYPE-C , 5V 2A (PC & MAC)
PC OS Requirements: Windows XP & Windows 7 / 8 / 10(32/64Bit) / Mac OS X 10.7 or later
Memory: Internal: 64GB;
External: micro SD card (Max. 2TB) x 1
Battery: 3,100mAh 3.7V Li-Polymer battery, 10 hours of battery life
Display: IPS 2.4” (Sharp LCM)
Operating System: Linux
Body Material: CNC machining aluminum, available in Gold/Space Gray
Dimension: 65[W] x 134[H] x 14.5[D] (mm)
|Finish Color||Space Grey|