Never seen any adjustment other than the amplification volume knob on top so I'd say there is no adjustment for compression.
Cool , dig it..since no adjustmemt no chance fer screwup by me..lol..
There is no adjusting. It works automatically. It is called Modu-Guard. It allows 100% modulation without over modulation. Also, other than the difference in the +3 having compression (as does the CS-1) and the SSK not, the SSK has a Dynamic cartridge as the +3 has a crystal cartridge .
The +3 has a CERAMIC mike element.