I am getting ready to do an all zpa build. I have 5 of them now. 2 0.5s and 3 0.3s. I also have doubles of all the zx series including nib recapped of each one. A fully custom dual mps2500s, nib recapped m25, m50 and 2 m100s. One fully rebuilt my Steve mantz. I also have all the fun smd toys so I ca...