BlueBird HIFI EXQUIS USB Xmos Coaxial Optical DAC6.0 WM8741x2 Decoder Vinyl Falvor Ultimate Synamic Luxury Version

BlueBird HIFI EXQUIS USB Xmos Coaxial Optical DAC6.0 WM8741x2 Decoder Vinyl Falvor Ultimate Synamic Luxury Version

Interface:
- Input-1: Coaxial
- Input-2: Optical(SPDIF)
- Input-3: USB
- Output: RCA stereo signal
- Power:
  Power switch in front panel
  Power standard 3 pin input plug in back panel(Only for 220/230v country)
- Switch: Source input switch

Parameter:
- Frequency response: 20Hz-28KHz
- SNR: General port output: 110dB (A-weighted)
- Harmonic distortion: General port output: <0.001%
- Digital stream support: 16bit, 20bit, 24bit
- Sampling frequencies: support : 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz
- Output Level: 2000mV
- Dynamic Range: 120dB (A-weighted)
- Dimensions: 38 x 21 x 6CM
- Chipset: Dual WM8741 + DIR9001
- Op-amp: OP2604A
- Weight: 4.5KG
 
Optimition of PCB design:  
- Power red part, it's biggest interference source, and then the rectification pink part;  then yellow decoding section; then the green shaping feedback section. Separate different section, to isolate the Electromagnetic Interferenc
- Electronic components use surround distribution, in order to use capacitors outer aluminum to absorpt interference.
- The green shaping feedback section is so esay to get interference, so we put it away from interference. and the digital decoding section's interference immunity is the best, so it can close the transformer section

Optimition of power section:   
- Using 35W toroidal transformer, like almost welknow brand DAC. Using LM337 power management chip,  add a professional power noise reduction panels.  Greatly improves the decoder SNR. Having its quiet background. Dale resistors

Using professional audio capacitors:
- Large capacity Philip military capacitors to provide adequate power, powerful low-frequency . Elasticity is enough
- Emerald green military MUSE capacitors, sound is transparent, high Frequency is beautiful.
- WIMA decoupling capacitors, more delicate details, soft, no glitches.
- Use recognized good DIR9001 receiver chipset. This much said.
- Smart muted optimization: in order to prevent explosion sound during the sound switching time. Reduce impact for amplifier and DAC
- Use better AV terminals. Compare with others brand HIFI machine, the Matte female RCA socket are only used in high-end machines, looking is more beautiful, and the contact is better. the sound will be improved. But not very exaggerated, huh. Enhance the sound by RCA plug. This view is not quite agree. However it will certainly be better. This is not wrong.
- Use digital voltage booster: Improve the ability to input digital signal. The signal is sufficient, work more stable.Digital booster. Improve the ability to input digital signal. The signal is sufficient, work more stable.
- BlueBird is specialy used a pure hardware control audio switching. Instead of the current single-chip control. We all know that after the MCU receives an electrostatic interference. The program will run fly, thus losing functionality.
And when the program is runing, it can bring high-frequency interference signals.
But use pure hardware circuitry. more cost but more stability and interference is greatly reduced.

Optimization plug:
- Better design to use rivets. No small screws hole on the bottom . Look more perfect.

Optimization plug:
- Use more high level aluminum feets

Optimization plug:
- All wire connections use terminal connection mode to prevent manual errors.

Optimization plug:  
- Inside components are more firmly fixed inside the machine to prevent the shipping shoc.
- USB XMOS chip extend card for PC/Mac USB transmission input part

Package List:
- 1 x DAC6.0 decoder
- 1 x Power cord