This was used reliably in my smoke free home studio until last month when The unit developed an intermittent buzz in the output. I sent it to Audio Rehab in Burbank, CA (official Avalon repair facility) to diagnose.After doing the necessary repair it should work fantastic. The item "Avalon 737" is in sale since Thursday, April 30, 2020. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "broncojosh" and is located in Denver, Colorado. This item can be shipped to United States.