Have yet to see a NTMB without a mid switch and I pulled one out of one and got some serious rackett. I have yet to see an NTMB without a switch and Bart NTMB diagrams all have them. I have a Bart 3 band TCT without a switch but it has the resisters on the mid pot that typically are attatched to the switches. So I assume the key factor lies in the resistors. Anybody have the lowdown?