If you're viewing this listing you probably already know about the John Hardy M1 preamps. The M1 is a recording industry standard.
Plenty more info available on the web so I'll say no more here. The item "John Hardy M1 mic preamp-4 channels with VU-1 meter and JT-11-BMQ transformers" is in sale since Sunday, August 13, 2017.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "alanackoff" and is located in Santa Fe, New Mexico. This item can be shipped to United States.