A pair of Z-Studio´s is a selected pair of fine mechanic work. Each pair is handmade. We produce our own magnets and a matched pair of membranes to find the best possible performance for one set. Each pair has a serialnumber and a registration in our system. tweeter : Micro-precision Z Studio Midrange : Micro-precision Z Studion 100F Midbass : Micro-precision Z Studio 170 pasif : For Tweeter and Midrange (see picture for more detail) Term and conditions : 1. All items comes with original box and packaging 2. All items works 100% fully functional 3. All items never been repaired (guaranteed) 4. Location Pd Indah and surroundings area 5. Low ballers will not be entertained ! SOLD For more info : http://www.microprecision.de/