Description:
This decoder board adopts HIFI level PCM2704 USB decoder chip whose performance is better than the most popular chip: CM102S series on the market. The USB powered power output can be directly connected to the headphones, but also the pre-digital output for a more advanced DAC decoder provides a SPDIF digital signal for better sound quality. It is an external sound card, so the chassis can avoid serious electromagnetic interference, SNR and sound quality can be improved.
PCM2704 is a single-chip digital-analog converter chip. It has two DAC output channels and an integrated USB interface controller. The interface meets USB1.1 standards. PCM2704 can receive sample rates of 48 KHz, 44 KHz and 32 KHz, stereo or mono audio data of 16 bits, internal software chip volume and mute functions can be synchronized to adjust the volume and mute the computer.

Specifications:
Size: 58 x 58 x 24 mm (excluding terminal)
Supply Voltage: 5V (Powered by USB)
Distortion: THD + N: 0.006% (RL>10 kΩ)
Distortion: THD + N: 0.025% (RL = 32 Ω)
SNR: 98 dB
Dynamic range: 98 dB
Headphone output power: 12 mW (RL = 32 Ω)
USB Supported Sampling Rate: 16-bit 32k - 48k
USB Support System: WINXP/WIN7/WIN8, for IOS MAC OS 9/OS X, for Android 4.1 and above (OTG models required)
Package weight: about 30g

Package List:
1 x Decoder Board