Product model: PRO AV2 Isolation cow model: permalloy material E10-9919 Input interface: Red and White Lotus RCAx2 Input impedance: 600 (AC impedance) Output interface: red and white lotus RCA x 2 Output impedance: 600 (AC impedance) Frequency response: 20HZ-40KHZ ( Less than 0.2db ref 1khz) Fixed loss: Less than 0.7db (ref 1khz 1V rms) Insulation resistance: DC1000V 100 Isolation voltage: AC 50Hz-60Hz 0v-1500v Colour:Black Material:Metal Package Contents: 1 x audio isolator 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.