1、After installing this silent EQ pickup, your violin can produce a fuller and more beautiful sound. 2、The active tone control system enables tone control and volume control, easy to adjust, no noise. 3、You can use the violin pickup to DIY your violin playing, perfect for electric violin, cello and violin. 4、The frequency response is from 20Hz to 20KHz, which will satisfy your various violin playing needs. 5、Small size and light weight makes it much easy to assemble and install, and also very easy to carry. 1 x Violin Pickup1 x Violin Pickup Stick2 x Nut1 x Washer8 x Screw1 x Wire Fixing Plate1 x Cable Tie1 x Output Socket1 x Pickup Function Frame1 x 3.5 Socket Nut Item Type: Violin PickupMaterial: Plastic + Electronic ComponentColour: BlackTone Control: ±12dBVolume Control: 0-10Frequency Response: 20Hz~20KHz