Overview the world’s first Hi-Fi player with the current strengthening of the Questyle QP1R

Questyle QP1R is one of two portable players to a Chinese company Questyle, which started with the DAC-s, and stationary headphone amplifiers. Questyle QP1 and top QP1R differ in that the latter is built on higher-quality components, uses a different PCB and a different OS.

The editors thank the online store Era-in-Ear for kindly providing the review player

The so-called Hi-Fi music players — a loose concept. A lot of them, are radically different in both sound quality and variations in price. Ranging from a $ 50 kids xDuoo and ending with the Astell&Kern with space price tags up to $2000. All these models have their audience. Of course, expensive audio players — a thing exotic and the demand for them is very small, but, as practice shows, is quite stable regardless of the economic situation. We’ve got one of those exotic fruits — player Questyle QP1R, which has a declared value of $900 and will cost us about 20,000 UAH, so definitely not for everyone. But if you get away from value to the assessment of the apparatus, so he definitely has what to show.
What is it?

Questyle QP1R is one of two portable players to a Chinese company Questyle, which started with the DAC-s, and stationary headphone amplifiers. Questyle QP1 and top QP1R differ in that the latter is built on higher-quality components, uses a different PCB and a different OS. The top model boasts a lower level of nonlinear distortion: 0.0006% versus 0.0015% for QP1 and 32 GB of internal memory instead of 16 GB in the primary.
Than it is interesting?

Of course, there is native support for DSD64 (2.8 MHz) / DSD128 (5.6 MHz), WAV, FLAC, ALAC, APE, AIFF, ADPCM, LPCM, MP3, WMA,WMA Lossless, OGG, AAC, DFF, DSF. PCM: 44.1 kHz – 192 kHz (16/24-bit), DAC uses the Cirrus Logic CS4398. One more feature, which is particularly proud of the company — technology the current gain of the “Current Mode Amplification”, which moved from fixed CMA800R in combination with the very low output impedance (less than 0.15 Ohms) allows the player a great feel with any headphones from 8 to 300 Ohms. More details about her remember later.
What’s in the box?

Player is packaged in a fairly large (for the player) black box with a magnetic latch. Inside the player on a soft stand:

Below that is everything else. In our case (and this is not the final version) has been manual, Garantie, MicroUSB cable, adapter from the linear output on optical and cloth for wiping. It is in this case. In the instructions even mentions the case, but we didn’t have one. Probably will be in the final.

Looks like?

Questyle QP1R and his younger brother are of identical design. The players are large in size, they are made of aluminum, silver or gold (in this case) colors on front and rear panels of Gorilla Glass. The solution mark, but looks expensive and now I understand why the included cloth. Placed in front of a relatively small display, scroll wheel with button inside and the touch buttons in the corners from him. On the upper left edge is the headphone output, linear and mechanical volume knob with clicks. Comfortable and credible. Thanks to protect it on the sides of the ledges, it will not rotate spontaneously in your pocket:

As we mentioned, the player also has 32 GB of internal memory, in addition, on the bottom there are two slots for memory cards MicroSD, support for cards claimed for 128 GB. Between them — MicroUSB:

On the left side of nothing:

To the right is the power button/unlock:

Back cover with the model name and some information of glass Gorilla Glass:

Player perfectly assembled and looks very solidly. For those who don’t like the Golden color in all its manifestations (like me), there is a silver version. The company on the website mentions that the player is going at the production facilities of Foxconn, which produces a lot of quality electronics, including Apple.
Is it convenient to use?

Controls placed with similar players FiiO follows: scroll wheel for navigation with a Play/Pause button on the inside. On the corners there are buttons responsible for access to home screen, back one menu item and “forward”, “back”. Everything is logical and understandable, there’s only one, but very significant disadvantage. Touch button and switch tracks in your pocket neglyadya can be forgotten immediately. The scroll wheel is not the most convenient, but this will be fixed in the final version. It will be rubberized.

The logic menu is clear and does not cause difficulties: there is a playback screen that shows all the track info and album art, there are various modes of playback, sorting by songs, artists, genres, albums, and playlists. Supported Gapless mode (no pauses between tracks), resume with a song or position, the conductor in the internal memory and cards and the settings menu. It selects the gain mode (low, medium and high), equalizers and so on. Set the usual. The firmware is not yet final, but already there is Russian language, while lame, but it is hoped that the finished.
What kind of technology the current gain of the “Current Mode Amplification” (you can skip but only sound, not how it works)?

In Questyle QP1R an unusual amplifier with current gain. Above you can see the schematic for the current source Transconductance (VCCS), the module current amplification A(i), the Converter current-voltage I/V output transformer (OPT) and the section for negative feedback. The input signal is first supplied to the current source voltage controlled, then fed into the Ai module for amplification in the current mode, then the Converter current-voltage, and then supplied to the output transformer (OPT). The output impedance of the amplifier is less than 0.15 Ohms. As a result, the player coping with picky low-resistance in-ear headphones and tight vysokoemkie headphones without losing quality. The manufacturer says about very low response time of loop negative feedback, which can significantly reduce the level of transient intermodulation distortion in comparison with classic amplifiers.
How does it sound?

The player uses a quality DAC Cirrus Logic CS4398, which is usually found only in expensive audio, and produces very clean, detailed sound. In the description on the official website mentions that the player copes with expensive hybrids AKG c К3003 an impedance of 8 Ohm and 300 Ohm Sennheiser HD800. Because of their high cost and rarity of such bundles to listen to failed, testing was a great 8 Ohm traindriver hybrids Dunu DN-2000J (their review can be read on our website), Beyerdynamic DT 880 Pro 250 Ohm impedance, and all the simpler options such as Vsonic GR07, Ostry KC06 and Sony MDR-7506.

Questyle sounds QP1R very detailed, transparent and balanced, all the instruments well separated and well positioned. The player shows a very high speed, no matter how loaded composition of various tools and nuances, all of this is fulfilled with maximum accuracy and without losing even the slightest of details. This is especially audible on high-quality recordings of live music with lots of different instruments. You can always notice the small nuances, which were not even aware. Along with all this, the sound does not work analytical and soulless, it loses musicality and emotion. The bass is perfectly controlled, and worked out with fine details, at the same time it is dense and driving. MIDs also practiced incredibly detailed and natural, in the smallest details.

As expected, the player copes with all the suggested headphones and in any case, squeeze from them the maximum possible, so that the stock as power and sound quality with the head missing. Of course, I would like to hear from a large number of models, including it would be interesting to evaluate with planar-magnetic, but there is a suspicion that the result will only improve with the improvement of the headphones you use.
How much the battery holds?

The player has a removable Li-polymer battery capacity of 3300 mAh. The manufacturer claims that the player works up to 10 hours. Approximately so: in mode Low Gain and medium volume a little more than 9 hours. The charging time from the power supply with an output current of 2 A is 2.5-3 hours when charging from a USB port will have to put on the night.
The bottom line

If you move away from the price tag that is currently lifting for a very small number of users, the player was really top, without any reservations: great sound quality, great potential for using a variety of headphones without sacrificing sound quality and concerns about the lack of power, support for all the most popular lossless formats and genre versatility. No wonder it is on the overseas forums called a serious competitor to the more expensive Astell&Kern. Perhaps the only drawback (for me especially) are touch buttons that allows to switch songs without removing the player from your pocket.

5 reasons to buy Questyle QP1R:

the highest quality of sound;
great reserve of power;
low output impedance and flexibility of the headphones;
native support for DSD128, WAV, FLAC, APE, WMA, ALAC, AIFF up to 192 kHz / 24 bit;
quality materials and Assembly.

2 reason not to buy the Questyle QP1R:

the touch of a button;
price.

Questyle QP1R

Format support
WAV, FLAC, ALAC, APE, AIFF, ADPCM, LPCM, MP3, WMA,WMA Lossless, OGG, AAC, DFF, DSF

Sampling frequency
44.1 kHz – 192 kHz (16/24-bit)

DSD
DSD64(1bit 2.8 MHz)/DSD128(1bit 5.6 MHz)

DAC
Cirrus Logic CS4398

Memory
23 GB + 2хMicroSD for 128 GB

Battery
Li-polymer, 3300 mAh, more than 10 hours of playback

Interface and outputs
USB 2.0 (microUSB), 3.5 mm output (headphones), 3.5 mm line-in/optical

Size and weight
109х63.5×15.3 mm, 165 grams

Headphone output

Power: 40 mW at 32 Ohms, 12 mW at 300 Ohms (High Gain)
Output impedance: < 0.15 Ω
Frequency response: 20 Hz – 20 kHz
THD+Noise: < 0.0006%