There is also a linear power supply group with a built-in Green Cube transformer as the core, instead of the cheap external switching power supply solution, which provides a guarantee for the sound quality and stability of the whole machine.
Currently sold as a new version, the voltage stabilizer is upgraded to 3 pieces of LT1963 low-noise voltage stabilizer
There are two versions of the machine:
Standard version: op amp with 3 TL072
Upgraded version of op amp: op amp with 3 high-precision op amps from TI OPA1612
PCM1794 has a sampling rate of 24bit 192K, has a high resolution, a sense of speed and transparency, and the tri-band is very commendable, especially the human voice, mellow and sweet, and it is a cost-effective chip. After 2 pieces of PCM1794 are connected in parallel, the dynamic range and signal-to-noise ratio are greatly improved to 132dB. After the parallel connection, the output current is doubled, the sound density is enhanced, the vocal is obviously thick, the whole sound section is relatively balanced, durable, and low frequency It is also enhanced, because the signal-to-noise ratio is improved, so the background also appears cleaner.
Highlight 1: Dual-core PCM1794 decoding, the details, dynamics, and sound field are all very good
Highlight 2: The coaxial fiber input uses WM8805 demodulation, which is a higher grade than the common CS8416 on the market, with low time base jitter and good compatibility, no popping, and easy transmission of 192K 24BIT data
Highlight 3: Using the National Semi-low distortion op amp OPA1612 low pass, the effect is better than OPA2604, the sound is transparent and delicate, and it is naturally bright. With a gold-plated IC seat, you can freely replace and upgrade the op amp
Highlight 4: The use of resistor-capacitor matching components and linear voltage regulator integration to make full use of the circuit performance, German red WIMA, ELNA capacitors, TDK high-quality chip resistors, etc.
Highlight 5: The all-aluminum alloy case with laser lettering is stylish and durable.
Highlight 6: Excellent performance, but excellent price, because it is completely self-designed, and even the chassis is produced by itself. In addition to the cost advantage, there is no other store that has more than 10 distributors to sell together, and the profits are all Eaten by the agent, so don&x27;t use the price to measure his quality.
The accessories of this machine include 1 power cord, without optical fiber, coaxial and audio cables, which need to be purchased separately.
At this time, the famous Beijing Green Cube sealed transformer has the characteristics of low magnetic leakage and high efficiency. It is the most basic guarantee for the sound of the whole machine. Next to it is the high-speed filter capacitor for Panasonic FC audio.