Decode Chip CS4397
Analogy Opamp chip: 5532
S/N ratio 105dB  
Distortion 0.0005%  
dynamic range: 117dB  
Frequency Response 20Hz-30KHz(±0.5dB)  
analogy output frequency: 2V  
Imput port: one digital optical fibre input 
                    one digital coaxial input
Output port: one RCA analogy un-balance output
                 
power imput voltage: ~110 or 220V  50Hz±10%  

The kit contents :as in the pics
* Main DAC board.    Size 85mm(D) X 60mm(W) X 25mm(H)

*. Power supply board  Size 80mm(D) X 55mm(W) X 40mm(H)

*. IEC AC socket x1pcs

*. Connection cables