Do you have a boutique head and cab setup, but the only thing connecting them is a bargain barrel cable from your local guitar shop?
Upgrade that cable to discover a depth of tone that you didn't even realize your amp had.
Line 6 Relay G50 G55 G90 Shure Wireless Upgrade
"The Mojave" Instrument Cable
Sennheiser Wireless Upgrade
Sennheiser Wireless Antenna Repair