Not being knowledgeable of architecture, I would say they are a step above G1000 but pre-G70. The sounds are actually very good, maybe a little crisp for a Roland, but still good Roland sounds. Keyboard is lively with a nice feel. It is a great 61-note keyboard for anyone who likes Roland's sounds & harmonizer and uses a lot of midi files. The COVER feature is helpful, especially if you feel the need to bump up or calm down a particular file; you can keep the file as is and always use the cover or save the file with the new cover instruments. It makes a great 'live' board and is also useful in a home studio.