GUSTARD A20H / XMOS PCM/DSD USB DAC Double AK4497 Headphone Amplifier

GUSTARD A20H / XMOS PCM/DSD USB DAC Double AK4497 Headphone AmplifierGeshide GUSTARD A20H XMOS USB PCM DSD DOP DAC Decoding Machine Double AK4497 Headphone Amplifier Highlight 1. Dual AK4497 class A full balance amp,native full balance. 2. Decoder and amplifier all in one ,well proportioned,double power supply design. 3. Clock management ,2nd PLL digital plastic,DOP demodulation modem,PCM DSD depop switch and other exclusive technology. 4. All interfaces support DSD decoding,digital broadcasting,USB supports 384K

Geshide /GUSTARD - A20H  XMOS USB PCM/DSD DOP DAC Decoding Machine Double AK4497 Headphone Amplifier

Highlight

Analog LPF circuit using Fully discrete circuit  Class-A line.

Fully discrete circuit  Class-A work flexibility. It is free to adjust the parameters of each level.

Technical experience and long debugging process, to achieve the best working condition.

AK4118 receive demodulation - sent to the CPLD for processing;

CPLD programmable logic chip, self-built logic functions of digital integrated circuits, clock management, 2nd PLL digital shaping, DOP demodulation, PCM / DSD depop switch and other exclusive technology;

Fully discrete circuit High Current Pure Class-A Balanced Headphone Amplifier.

Professional team design.

The input stage adopts audio special low-noise tube, full-DC amplification, carefully debug each level work in the best working condition.

The final stage use 4xMedium power tube, Big Output Power, most of the headset to play the best results;

2X50W custom toroidal transformer.Completely independent power supply, do not interfere with each other.For high-quality sound to provide better power supply environment and power;

filtering and voltage regulation. To ensure clean and stable power supply;

Relay array, 60 files simulation of lossless volume adjustment;

XOMS U8 USB Professional SOUND CARD:

XMOS USB using the latest and highest-level U8 (8 core) USB AUDIO scheme,

PCM highest support 32Bit 384K,

DSD Support DSD64 (2.8224MHz), DSD128 (5.6448MHz), with leading system compatibility:

Compatible includes 32/64-bit Microsoft Windows XP, WindowsVista, Windows7, Windows8, Windows 8.1, Windows 10 and other mainstream Windows systems, supports Apple MacOSsystems, Linux kernel support system, and is compatible with partial support OTGfunction of iOS, Android smart devices .

American  ACCUSILICON femtosecond crystal;

Full interface supports DSD.

IIS supports DSD64, DSD128, DSD256, DSD512;

USB support DSD64, DSD128, DSD256;

Coaxial / fiber / AES / EBU support DSD64 (DOP mode);

Frequency response

THD+N

SNR

Headphone amplifier 2-channel each connected 32Ω load,Output power at 2400mW: distortion and waveform.

I2S Pin definition