RECORD AND CONNECT TO PC: This personal mixer has asoundcard and audio interface to record and connect to PC and it has universal digital audio file compatibility. Can be used by beginners or studio professional applications LOW NOISE DESIGN: This portable console controller mixer has signal output thru the headphones. MULTIPLE CONNECTIVITY: to connect CD, Mp3 and players. Specifications Hign-concerned Chemical:none Type:Mixers,Effects Processors,Stage Effect Machine (The product appearance and printed words depending on the batch, but this does not affect use) Colour: Black Material: Metal Package Contents: 1 x sound card 1 x line 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.