Rational Acoustics UK & Ireland Welcome Rational Acoustics UK & Ireland, the distributor of Smaart measurement software, related training classes, and accessories. Smaart v9 ST Smaart v9 RT Smaart LE Smaart SPL The official mascots of Rational Acoustics. These seven little gremlins like nothing more than to give your sound system their own distinctive voice. Sure, they’re friendly enough when encountered as a balanced group, but hanging out with any one of them for too long can drive you to distraction – or worse. Don’t be fooled by their diminutive stature and (sometimes) cute appearance – these little offenders have a long rap sheet filled with everything from simple charges of disturbing the peace to more flagrant offenses like system hijacking and mix vandalism.