I bought an Impulse 61 two years ago. I installed it in my room and the keyboard has never moved from there during these 2 years. I've played an average of 1-2 days a week during that period and it's already broken. All the buttons are working except the main part, the keys. There's no midi signal at all from the keys. The distributor in Canada wants to charge me $215 including taxes to repair it. The problem is the main ... assembly board. For the price (near $500), I'm not satisfied at all of the short life of this controller so I don't recommend it. It was the first and last time that I was buying a Novation product!
From an unsatisfied customer.