Musikmesse 2011: Line 6 announced today a free update for all POD HD multi-effect processors.

Firmware update v1.3 will include six new HD amp models and five new amp parameters for additional tones and flexibility.

The six new HD amp models available in v1.3 are based on channels from three classic American combos (the “Vibrato” channel of a Fender Deluxe Reverb, the “Vibrato” channel of a Fender Twin Reverb and the “Bright” channel of a Fender Bassman), two British half stacks (the “Normal” channel of a Park 75 and the “Normal” channel of a Marshall JTM-45 MkII) and a high-gain Line 6 original.

The inclusion of alternate channels of amps already found in POD HD multi-effects is designed to ensure an experience that more closely relates to playing the actual modeled amp.

The new parameters in v1.3 let you further customize and dial in any amount of tube amp feel and behavior. Sag, Hum, Bias, Bias Excursion and Master Volume can be adjusted within any HD amp model, including the 16 that come with POD HD multi-effects processors originally.

Firmware update v1.3 will be available to download from line6.com later this month.