Although it was introduced some time ago Digitech is now shipping their new guitar modeling effects processors that include the AudioDNA2 DSP processor and join the previous RP models. The DigiTech RP90 and RP70 Guitar Processors not only allows you to include a huge range of effects in your sound but programming your own custom effects too.
The DigiTech RP90 & RP70 Guitar Processors 50 factory presets, 50 user presets, 12 amp, 8 cab, 6 distortion effect and 32 regular effects (boutique stompboxes, wah, step filter, …) models, 40 drum patterns, amp/mixer switch, built-in chromatic tuner, 24-bit A/D and D/A conversion, 44.1 kHz sampling frequency, unbalanced 1/4″ input and stereo (2-channel) 1/4″ and stereo headphones outputs.
The main, and I think that is also the only, difference between the RP70 and the RP90 models is the expression pedal, the RP70 includes a 1/4″ expression pedal input and the RP90 includes a expression pedal. Both are now available and their prices are $79.95 for the Digitech RP70 and $99,95 for the Digitech RP90.