Golden Age PRE73 Upgrade to PRE73 MK2 Stompboxes The input and output grounds

The input and output grounds of each section are isolated from each other

Equivalent noise level

(50 Hz & 7 kHz) 35 dB Gain

X's are best described as bridging the gap between passive and active tone

Golden Age PRE73 Upgrade to PRE73 MK2 Stompboxes The input and output groundsGolden Age Pre73 Upgrade to Pre73 MK2 (Includes Labor & Installed on Premises) How Does it Work? You send us your Pre73 and we install the Pre73 MK2 Unit and then send the new gear back to you. Free Shipping! This is for an upgrade from the Pre73 to the Pre73 MK2 Model. This unit includes labor and comes pre installed. You already have the Pre73, so why not make it better and upgrade to the Pre73 MK2 with this easy, already installed unit! The images