The Helix 3.01 update addresses potential severely corrupted audio output. Due to this, we recommend updating your Helix family device as soon as possible. This issue may also be experienced on Helix Native; an update for Native will be available in the very near future. IMPORTANT! Click here for detailed update instructions.   New Amps in 3.0 Helix Floor, Helix Rack, Helix LT, Helix Native, HX Stomp     US Princess, based on* the Fender® Princeton Rev