Thank you for viewing. I am offering the ZO: (NOS 2N4061 Transistors), a legendary machine from reeveselectro.co.uk. It would not be an exaggeration to say that this is one of the best zonk machine-type effectors. This is a limited edition of only 20 units, and it sold out in just 2 minutes after its release. The beauty of the internal point-to-point wiring is artistic. I have only tested the sound, and after that, it has been carefully stored in its box.