ERA is an advanced step-sequencer-plugin, which communicates with the host and other plugins. It consists of 12 trigger-rows, which can be routed independently to plugins. Each row contains 16 steps but patterns can be easily (unlimited) chained. There are special drum-programming and piano-roll views. One preset contains 128 patterns, which can be recalled via midi. The patterns are clearly organized in banks, programs and variations. Furthermore every of the 12 tracks has four LFO's to modulate ERA self and other VST's.
ERA supports the plugin-standards VSTi (v2.3) and MFX. ERA doesn't work with Abletons Live, Audiomulch, Chainer and Logic Audio. But running it hosted in a plugin like Energy XT is no problem.