Artec brand AB 2 Active booster for piezo pickup AB 2 is volume tone booster for piezo pickup,it is made up of two slide potentiometers with tmetal top panel.it is easily mounted on the side of your guitar.AB2"S tone controls to boost the resonance to achieve pure natural acoustic sound while other ordinary tone controls to reduce the treble band range.Artec guarantees a virtually noiseless soud with long 9V battery life. Payment: We only accept Paypal . Shipping: Once payment has been confirmed, your item will be shipped within 2-3 business days.After the packages are shipped, the seller will provide the tracking number to the buyer. Normally it takes about 3-8days to arrive. Shippment: Ship by EMS, TNT, CSS,and so on (that is the USPS ) to most countries of the world. If you are from other countries,please leave a note before ordering! We welcome combine shipping,then the customer will save much shipping cost. Terms of Sale: If you are not happy with any item, please let us know within 14 days of receipt so that we can arrange for an exchange or refund. After getting the returned item,we will refund the customer at the item’s price.You will pay a 25% restocking fee. Contact us : We are always willing to help if u need any advice;