SMAKN&reg; X2734 PCM2706 + CS4344 high quality USB soundcard / DAC decoder board Programme: PCM2706 + CS4344 Plate size: 65 * 50MM (excluding terminals). Supply voltage: 5 V (USB powered), Distortion: THD + N: &lt;0.008% (RL = 10 k) SNR:&gt; 95 dB