rising star, green in blue-details of feiao K11 R2R version
Overture
companionship is always the longest confession.
Feiao K series "portable table", as a desktop HiFi partner, is selling well all over the world. With its ultra-high cost performance, it has won wide praise from many HiFi and non-HiFi users. In an era when high-end HiFi tails cost thousands of dollars, K11 is positioned at a few hundred dollars, with complete audio interfaces, strong driving capability and convenient and easy-to-use functions, bringing higher cost performance and more comprehensive performance than similar competitors. The slim body combines minimalist design with the strength to become a desktop HiFi high-value listening companion.
, Feiao launched the R2R version of K11 as promised, further enriching its entry-level desktop HiFi product line.
two rabbits walking beside each other, can an tell me if I am a male or female? This R2R version of K11 follows the mature mold of the previous version, with an appearance similarity as high as 99%, simply with the"R2R"mark to distinguish. Added red appearance with white radium carving color matching, slightly increased weight, the rest is almost the same.
, thanks to Feiao's strong cost control and quality control capabilities, although the K11 R2R version is still at the entry level of the desktop and the price is less than a fraction of its flagship, the product design and manufacturing process have not shrunk.
low price but not low quality, workmanship and design is not even lost flagship. The square and flat set-top box is shaped, the metal shell has been carefully carved by CNC, the volume and weight are just right, the four corners of the large R angle transition is natural, the slim volume of 147 × 133 × 32.3mm is highly consistent with the standard version, the weight is only 13 grams more than the standard version, the weight is light, thin and small, and it is placed beside the notebook as a HiFi partner, which has no effect on the user's work and study.
interface, 4.4mm balanced jack and 6.35mm single-ended jack can be seen on the front panel. The press knob integrates all functions with one key. The operation logic is completely consistent with K11, and the difficulty of getting started is extremely low. K11 R2R rear USB/fiber/coaxial input interface, realize balanced/single-ended headphone output and RCA line output/coaxial output. It has three input modes of USB type C, optical fiber and coaxial, and both input/output at the digital coaxial end. The same audio data can be split into two channels. The perfect interface and function can give consideration to headphones and active speakers, helping users to build their own desktop sound system.
color matching classic color value off the charts, perfect help users to create different styles of table set combination
K11 R2R has a particularly stunning colorful RGB atmosphere lamp that beats friends and merchants. It is integrated into FIIO LOGO without trace. It is a smart atmosphere light with a sense of science and technology, and forms a beautiful scenery with HiFi circle under the reflection of notebook RGB atmosphere lamp. The multi-color atmosphere lamp helps users to quickly understand the sampling rate of different tracks, realizes the global adjustment of color, breathing state and brightness, and can also choose the color of the atmosphere lamp when it is always on according to personal preferences. The light is homogeneous and pure, and even more ornamental and technological than the LOGO lamp belt of flagship notebook.
is equipped with a high-definition LCD display screen, which has a higher contrast but softer display effect than the traditional LED screen, a more coordinated look and feel, and a longer service life. It is convenient for users to clearly see the current state of the machine from different angles. All function setting parameters can be completely realized on a square-inch screen.
Discrete R2R Resistor Array for Pure and Natural Sound
R2R(Resistor-Resistor) decoder has a long history, as a direct digital-to-analog converter, its core principle is to realize the conversion of digital signals to analog signals through the resistor network. Compared with the traditional ∆-& sum;(Delta-Sigma) decoder, the R2R decoder has higher linearity and theoretically lower distortion, and can provide a more pure and natural sound.
K11 uses a CS43198 DAC chip, supports audio resolution up to 32bit/384kHz, and has the ability to hard decode DSD256.
K11 R2R has the same decoding technology but has the same goal by different routes. It adopts R2R resistor network and supports the decoding capabilities of PCM 384kHz /24Bit and DSD256 (DSD256 decoding requires the DSD output mode of the front-end audio source to be set to Native, which is internally converted into PCM for R2R resistor array decoding). It can easily cope with high-precision audio signals, show rich sound details, and provide more pure and natural sound quality.
positioning is close to the people, the value is not high, the theory and practice are both important, and the sound quality is always the first.
's powerful bottom noise control is half the success of R2R sound quality
K11 R2R adopts complementary architecture, with SGM8262-2 amp chips, each channel is equipped with a professional volume control chip, and NJW1195A electronic volume control chip is used to realize precise volume adjustment. High quality emerald solid state capacitors further enhance the purity and stability of sound quality. With an external 12V power supply, the power supply is purer and more powerful, bringing "dark and quiet" bottom noise control. Compared with the non-complementary architecture, it has lower noise and less FFT harmonic components, and the music background is darker, even better than the battery-powered portable competition with far higher positioning. As a plug-in R2R has this strength, it is not easy.
machine?
K11 R2R is equipped with professional audio amplification circuit and power supply system: audio signals are professionally processed and amplified, and up to 17 low-noise LDO precision voltage stabilizing ICs and external customized 12V switching power supply ensure the purity and power of audio output. Provides a balanced output power of 1300mW +1300mW, enough to drive most professional headphones. NOS/OS dual mode: no oversampling mode (NOS) and oversampling mode (OS) are provided. users can choose according to sound quality preferences. in OS mode, the global frequency is increased to a high sampling rate of 384kHz. THD + N shows excellent audio performance, provides more delicate and clear sound quality, and the overall performance is satisfactory.
K11 R2R is equipped with a complete 6.35mm single-ended and 4.4mm balanced output, matching professional audio amplification circuit, and has three independent gains. Each gain is tuned to correspond to an independent volume curve, which can not only improve the listening experience of headphones with different impedances, but also further adapt to various earplugs or big ears. Compatible with PO/LO, advanced burning friends can also easily connect more powerful earphones or table sets to perfectly control all kinds of earplugs and big ears, providing users with higher quality sound quality experience. For game users or HiFi burners, it is really pleasant to experience the baptism of music while playing or working.
rising star, green in the blue
Sennheiser HD490Pro has a neutral listening style sound that is balanced and natural. The wide frequency response range, from 5Hz to 36kHz, provides rich audio detail. The high sound pressure level (128 dB SPL) and large impedance (130 ohms) means that higher power is required to drive. The open design provides an open sound field and a good sense of positioning. It is well-made and comfortable to wear. It comes with the dearVR MIX-SE plug-in, which uses spatial audio technology to provide users with a virtual mixing environment. At the 3K price point, HD490PRO is suitable for most music types, especially modern pop, modern rock and electronic music.
during the period when the doctor was playing with this Sennheiser HD490Pro headset, every time the front end was replaced, every time the wire was replaced, and even every time the operational amplifier or decoding wire in the HiFi device was replaced, the style change of the HD490Pro was reasonable and unexpected. The variability of this style is also the charm of this headset. When the HD490Pro is matched with the K11 R2R 4.4 balanced output, the degree of fit between the two is surprising.
sound field performance: K11 R2R with HD490Pro shows a relatively wide and three-dimensional sound field. The width, dynamics and details of the sound field are tested by comparing Beethoven's Ninth Symphony in "Beethoven : Symphony No. 9" Ode to Joy ", especially the chorus of the fourth movement, and Dvorak: Symphony No. 9" From the New World "Dvorak's New World Symphony, especially the flute solo of the second movement and the climax of the fourth movement. The advantages of K11 R2R in the openness and layering of the sound field can be clearly felt. Although the ordinary version of K11 also has a good performance, but in the depth and width of the sound field is still slightly inferior to three points.
High-frequency instrumental music: K11 R2R high-frequency instrumental music performance, collocation HD490Pro show enough clear and delicate high-frequency details, as well as good ductility and fineness. Especially when listening to the "Four Seasons"-Antonio Vivaldi "Spring" and "Summer" movements, the rich strings and wind music can test the layering and positioning of the sound field. K11 R2R can better restore the tone and details of the instrument, and the high-frequency part is more pure and transparent. In contrast, although the high frequency of K11 also performed well, it was slightly insufficient in detail and extensibility when showing the third movement of "Summer.
intermediate frequency voice: when evaluating entry-level and advanced HiFi equipment, intermediate frequency, especially vocal performance, is often the key to winning HiFi products. Thanks to the innate advantages of R2R, it is collocated to analyze the HD490Pro that are good at it. The harmony between the two gives the combination a lot of points. "I Will Always Love You", the song Houston by the Whitney can fully show the excellent vocal texture and emotional expression of the queen, and the performance of high-frequency extension and penetrating power of the voice is fully interpreted. The beautiful woman has passed away, and she can't help but tearful. Listen to "Breathe Me" again. Sia's unique voice and emotional depth of the song are especially suitable for showing K11 R2R's ability to capture sound details. To be fair, CS43198 the blessing of K11 is also brilliant at vocal performance, but the two still have slightly different interpretations of the expression of emotion in the work.
Low Frequency, Dynamics and Transients: "Billie Jean"-The bass drum points and rhythms in Michael Jackson songs are very suitable for testing the strength and dynamics of low frequencies. While listening, you want to dance with MJ to the beat. "For Whom the Bell Tolls"-Metallica the beginning and end of this song have deep bells and strong rhythms, which are very suitable for testing low frequencies and dynamics. "Come Together"-The Beatles works bass parts and drum beats can test the low frequency performance and transient response of the sound system. K11 R2R shows excellent diving and layering in low frequency performance. The K11 R2R can better restore the dynamic changes and transient details when listening to some large-scale symphonies. Of course, the low-frequency performance of the regular K11 is also commendable, but there is still some room for improvement in layering and control.
three frequency connection: three frequency connection K11 R2R and K11 showed good smoothness and naturalness. The transition between the three frequencies is also smooth and silky, with no extraordinary sense of abruptness and tearing, and the overall listening feeling is comfortable, delicate and durable. K11 performs equally well in three-frequency connection, but if dual 43198 can be used as DAC, I believe the presentation effect will be more smooth and gentle.
parsing, image and timbre: The R2R decoder is not a shortcoming in terms of analytic power, but it does face design and cost challenges. In contrast, the K11 R2R is superior in sound texture and naturalness, and may be different from the traditional ∆-& sum; decoder in terms of resolution. It is well known that R2R decoders require extremely precise resistor networks to achieve high-precision conversion, which introduces complexity in design and manufacturing. In addition, the cost of the R2R decoder is high due to the large number of precision resistors required. As the sampling rate increases, it is technically more challenging to design a high-performance R2R decoder. In the doctor's view, although the K11 R2R positioning is not high, but in the analysis beyond the doctor's expectations. Coupled with the HD490Pro of this kind of monitoring to the headset assist, the improvement of analysis and knot image has been greatly increased, appearing vivid, three-dimensional and quite concrete. As for timbre, this is the strength of R2R. Warm, genial, classical, dignified timbre performance is more recommended to have a certain experience of the old burn who carefully taste.
About the collocation of front end, wire, earphone and works: whether coaxial, optical fiber or USB input is used, whether connected to a tablet, PC or mobile phone, K11 R2R has quite strong inclusiveness and can provide stable and high-quality audio output. In USB DAC mode, K11 not only supports Win10 and above Windows system drive-free use, but also compatible with PS5 and Switch and other game devices. Whether users enjoy high-quality music, enjoy cartoon animation or immersive games, they can plug and play, convenient and worry-free. Especially for flagship notebook computers compatible with USB3.1 or above, users can connect K11 R2R through high-quality C TO C decoding upgrade line to fully take over the audio output of the computer and realize overall sound quality improvement.
portable HiFi players mostly pursue the advantages of machine quality and stacking materials, while machine users pay more attention to the balanced coordination of hardware and tuning and other links, and enjoy the matching process of equipment combination from quantitative change to qualitative change to breakthrough. Often through the flagship equipment and wire, terminal detailed collocation, in the subtle to identify the subtle differences between music works and equipment combination, pay attention to the different materials of wire to bring different emphasis on headset products, as well as the subtle sound quality sublimation.
this time.Zefeng ZEPHONEspecially adjusted several upgraded material lines for the HD490Pro, and matched them with top decoding wires.Valhalla II, the top-level decoding wire greatly broadened the original sound field of K11 R2R and headphones, making the already shocking music more temple and epic at this time. On the basis of the original, the three-frequency connection is more flexible, and the separation of the balanced output is more open. The specially modulated upgraded wire effectively enhances the medium and high frequency of the earphone. The excellent noise control makes the background darker, further highlighting the clarity and fullness of the human voice, bringing the human voice performance more delicate and vivid. While respecting the original style of the work, it strengthens the elasticity of the low frequency, enhances the atmosphere of the work, and under the delicate foil, the feelings of the song can be more vividly displayed.
Style Matching: K11 R2R is suitable for different types of music, especially pop, classical and jazz. Its natural and delicate sound performance can better restore the musical characteristics of different styles. The ordinary version of K11 performs well in the matching of popular music styles. Of course, the difference in music styles between the two is not particularly obvious. They are all versatile players.
Headset Matching: K11 R2R has quite friendly inclusiveness and can perfectly adapt to most earphones in circulation on the market, including high impedance big ears, flat earplugs and even moving iron earplugs. There's even a tuning bonus with your own headphones. One hero and three gangs, this aspect is reflected incisively and vividly in the aspects of Taiwan machine, earphone and wire.
final chapter
In short, compared with K11 using traditional decoding, the advantages of K11 R2R are reflected in many aspects:
1. More natural sound quality performance: R2R decoder provides a more analog sound experience with its direct digital-analog conversion method, and the sound performance is more natural, smooth, and has better musical attributes.
Warm and loose timbre: The sound of K11 R2R has a warm and loose quality, especially in the mid-range part, the vocal performance is fuller and the emotional expression is rich.
lower distortion and noise floor: The K11 R2R delivers lower total harmonic distortion (THD) and signal-to-noise ratio (SNR), with less background noise and clearer sound quality.
excellent dynamic range: K11 R2R has a wider dynamic range, making the dynamic changes of music more obvious, so as to enhance the overall listening experience.
delicate high-frequency performance: K11 R2R high-frequency part can show more details and overtones, so that the music sounds more delicate and transparent.
good tone rendering: R2R decoder has unique advantages in tone rendering, which can provide richer and stereo sound effects.
's adaptability to music types: K11 R2R's warm and loose sound characteristics are suitable for various types of music playback, especially for classical music, jazz and other music types that require rich details and timbre expression, and are more balanced for large-scale instrumental interpretation than K11.
2. Mature concept of powerful hardware composition and design: With the development of audio decoding technology, modern R2R decoder has been quite mature in design and manufacturing process, and can provide high-performance audio experience. However, due to objective factors, the mass-produced R2R decoders currently on sale are now rare and the premium is obvious. The discrete R2R resistor array chip technology has taken another path, but the current manufacturing cost is still relatively high. The Feiao K11 R2R version uses a newly developed four-way fully differential complementary 24Bit R2R resistor array DAC. The decoding method consists of 48 thin film resistors per channel and 192 precision thin film resistors with 0.1% accuracy and low temperature drift (30ppm) in four channels, providing unique sound quality performance. The complementary architecture design of K11 R2R makes it have lower noise, less FFT harmonic components and darker music background than non-complementary architecture, I .e. stronger noise control. In terms of circuit design, K11 R2R uses FPGA chip for digital preprocessing, two operational amplifiers are used for impedance transformation, and the middle resistance network and electronic switch form the R2R network, which provides a professional audio amplifier circuit and a professional power supply system to ensure the professionalism and reliability of audio output.
3. Brand influence and strong technical support: At present, many well-known audio brands have launched their own R2R decoder products. In the development process, Feiao purchases better raw materials and components in similar budgets regardless of cost, through perfect technology and excellent cost control of materials, thanks to lower cost sharing, better quality control, higher yield and resistance, which can realize high-precision matching and more refined welding technology, good technical support and continuous firmware updates ensure the long-term availability and continuous performance optimization of the player. The user how to choose more suitable for their own R2R player is self-evident.
4. A good start is also the cornerstone of success: K11 R2R is undoubtedly an ideal choice for music lovers, given that there are relatively few professional R2R audio decoding products at a popular price to experience the audio characteristics of R2R players. The launch of the K11 R2R also has a very high strategic position in terms of weight. K11 R2R's new decoding scheme not only provides users with a different audio experience from the past, but also represents Feiao's technological progress and innovation in the audio field. As a successful landing of a new audio decoding solution, it will undoubtedly accumulate useful research and development experience for Feiao's flagship player to use R2R technology in the future.
K11 has won wide praise from most HiFi users for its ultra-high cost performance and excellent sound quality. This time, the K11 R2R has a stronger competitiveness, which makes people shine and yell for it. Compared with the K11 ordinary version, the R2R version is slightly more expensive, but its improved sound quality and unique analog taste make it more advantageous in terms of cost performance and novelty. Not only has it made a breakthrough in technology, but it has also performed well in terms of sound quality and cost performance. Whether it is used as a PC desktop HiFi peripheral or as a dessert-grade desktop R2R new product, K11 R2R is an excellent work worthy of bursting recommendation.
Author:kinglzr07-29 10:58
web site:https://weibo.com/ttarticle/p/show?id=2309405061427781304973
