9i-938/958 is excellent AMP for HiFi with powerful power output capability. it can drive most large speakers. It's sound style is neutral type.

An android based media player product with many funtions. It can play not only local music but also online, such as Aairplay and Tidal support.

. The 9i-906 headphone amplifier is nicknamed the "Silver Fox". Its purpose is to drive "monster" headphones. The circuit structure is derived from a high performance power amplifiers. After many redesigns and adjustments, the "Silver Fox" has finally become an excellent headphone amplifier. It not only has the advantage of high analysis, but also features high density and neutrality. The sound is musical. It has outstanding driving performance and can drive low sensitivity headphones. It is one of the best in its class. . . . Whether high or low sensitivity, high or low impedance, moving coil headphones or flat panel headphones, the "Silver Fox" is able to match them all with its superb driving ability and quality. Compared to ordinary headphone amplifiers, the Silver Fox allows headphones to fully reveal their characteristics.

. DSDAC 1.0 deluxe model is a new product which was developed on the basis of the standard model by optimizing the clock system and making major modifications to the circuit. It is different from the ordinary DAC. Its high-precision DSD frequency raising algorithm solves the playback problem of dsd64 perfectly. . The synchronous direct clock technology enables the built-in femtosecond clock to be transmitted to the shift register directly without any process, so that the femtosecond performance can directly improve the analog signal quality. The clock blocking technology can isolates the clock of pre-device completely , so that the clock of the pre-device no longer becomes a factor affecting the sound quality.

. DSDAC1.0 is a high-performance audio DAC based on DSD theory. It is completely different from ordinary DAC because it has many original technologies. It does not use conventional chips for DA conversion but FPGA and discrete components for digital processing . . DSDAC1.0 can increase the frequency of all input data including PCM or dsd64 to dsd1024. If the input data is higher than the dsd128, you can also output it directly without increasing. DSD frequency raising algorithm is a very complex mathematical process, DSDAC1.0 did a good job. . One year after the standard model was launched，the super clock model was launched. Performance is futher improved

. .The 9i-AD series media player adopts the 88de3010 scheme of Marvell as the main control and has high-definition video function(2K). Because of QDEO technology and two high-end audio DSPs inside, its video quality is very good as well as audio quality. After we redesigned it, it can receive external clock. With excellent audio and video performance, 9i-ad has achieved very good market performance.

9i-806 "Little Silver Fox" headphone Amp is simplified version of 9i-906 :Silver Fosx". Most Advantages of 9i-906 have been preserved but the price is lower than it. Very good value for money.

. .9i-ADM 8 channel HiFi media player is designed for multi-channel HiFi. It adopts the 88de3010 scheme of Marvell as the main control and has high-definition video function(2K). Because of QDEO technology and two high-end audio DSPs inside, its video quality is very good as well as audio quality. After we redesigned it, it can receive external clock. . .The difference between 9i-ADM and 9i-AD is that 9i-ADM has 8 ch analog output but 9i-AD only has two.

. .9i-ES/ESA is a media player designed for desktop hifi system. It is a reduced version of the 9i-AD Black Gold Ultimate Model. . .9i-ESA is a model with headphone amplifier.

. .9i-90SA Pro （"Lark" second Generation ）DAC/headphone Amp/Pre Amp， It is a low-priced product and carries some high-level audio technology and practical functions. Although it is cheap but its audio performance is close to that of high end products. It is good choice for most Junior enthusiast.

. .Due to success of 9i-92SA " golden thrush" second and first generation the third generation was born. but it's DAC chip was changed from AK4497 to ESS9038Pro . . .As a general rule the performance of ESS DAC chip is highly analytical and dynamic but it's sound is a little hard, so there are many special adjustment have applied to the third Generation and got good effort . . .It already has many users and has very good comments. It has strong competitiveness

9i-810 is simplified from 9i-908 and the sound is re-tuned.