Please contact Tom before sending in an order.
All equipment is tested and tuned up if necessary.
We also do custom mic work on some Astatic, Shure and Turner shells. A simplified way to think about this is if you combined a 12AX and a 12AT the amplification factor would be 170, great for guitarists but a screaming feedback problem for some harp players. So to minimize gain, use lower values in tandem. Test the volume and tone with each, and find the one you like best. Check with your amp tech for more information.