Most furniture asks you to make a decision and live with it: this sofa, this configuration, this room layout, for years. AMBIVALENZ, a Berlin-based design studio, takes the opposite approach. Its two core product lines, the Curt modular sofa system and the Fläpps wall system, are both built around the idea that a living space should be able to change its mind.
Curt: One Module, Endless Sofas
Curt is arguably the simplest modular sofa system available, precisely because it only has one shape to learn. Every configuration in the AMBIVALENZ lineup, from a single armchair to a twelve-module corner sofa, is built from the same cube-shaped pouf, connected using a patent-pending strap system that requires no tools. Four modules alone can be rearranged into more than twenty different layouts, which means a Curt sofa bought for a studio apartment can still make sense years later in a completely different room.
A Cover That Splits in Half
The detail that separates Curt from a typical modular sofa is its two-part cover, which unzips down the full length and can be mixed and matched between modules. One red module and one blue module can become two modules that are each half red, half blue, which sounds like a small trick until you realize how much color flexibility it adds without buying new furniture. Fabric options span Jet, Dama, Sera, and Barcelona, ranging from wool-touch upholstery to a plush velvet finish, so the color experimentation isn’t limited to a handful of safe neutrals.
Fläpps: Furniture That Disappears When You’re Done With It
The second pillar of the AMBIVALENZ catalog is Fläpps, a modular wall system covering desks, shelves, coat racks, and folding chairs, all built from birch plywood and folded flat against the wall via a purpose-built hinge mechanism. Unfolded, a Fläpps desk offers full worktop function; folded shut, it reads as a flat, almost picture-like panel on the wall rather than a piece of furniture at all. Every module shares the same sizing grid across three widths, five heights, and three depths, so a single shelf bought today can be extended with new pieces years later without anything looking mismatched.
One Desk, Several Jobs
What makes the Fläpps desks genuinely practical rather than just clever is how many roles a single unit ends up filling. The larger Sekretär doubles as a breakfast table for four, a reading nook surface, or a workbench, and because it can be mounted at any height, it works equally well as a seated desk or a standing one. Add the Upanddown accessory and the same desk becomes height-adjustable, which is a rare feature for wall-mounted furniture that folds flat.
Built for Small Rooms, Not Limited to Them
The space-saving pitch behind both product lines can make it easy to assume AMBIVALENZ only makes sense for cramped city apartments, but the same flexibility scales up just as well in larger homes and commercial projects, from offices to public spaces. A large Curt sofa landscape and a full wall of combined Fläpps modules can just as easily anchor a spacious loft as they can rescue a tight studio, since the underlying idea, furniture that adapts rather than dictates, doesn’t depend on square footage.
Worth a Closer Look
Between Curt’s endless reconfigurability and the Fläpps system’s ability to vanish into the wall when it isn’t needed, AMBIVALENZ has built two genuinely different answers to the same question: what if furniture didn’t ask you to decide everything up front. For anyone who has ever rearranged a room and wished the furniture could keep up, it’s worth spending time with the online configurator to see what a Curt sofa or a Fläpps wall setup could actually look like in your own space.
