AMBIVALENZ Has been developing modular furniture solutions since 2012. This Berlin-based brand was created by designer and inventor Malte Grieb. His designs find their source in our changing lifestyles. Our needs are constantly evolving, both for residential and professional purposes. Why not turn a modular sofa into a classic sofa? A really compact, comfortable sofa with full armrests. And why couldn't you turn the compact, comfortable sofa into a small corner sofa or chaise longue, or many other configurations. Yes, why not when you have an incredibly flexible modular sofa system at your disposal.