A few units of this build are ready for immediate shipping - don't sleep! £1295 VAT or you can elect to pay £500 VAT now and the balance when your 636P is ready. Guitar pedal version our Grampian 636 mic preamp circuit: no corners cut, all the ragged filthy glory of the Type 636 mic preamp in a handy portable unit. See the desktop version of our 636P .