Rare Waves LLC and Eric Archer are developing a new model of our Lite2Sound photodiode amplifiers – the Lite2Sound QB. Many sources of light contain hidden tones and modulated frequencies that can only be heard with a light sensitive receiver. Creative audio producers, field recording enthusiasts, and sound designers are finding that photodiode amplifiers offer a new ‘secret weapon’ to expand their toolbox of sound sources. The video clip shows just a few samples of Lite2Sound QB in action, but we feel that the real magic is field recording in technology-saturated spaces. We will present more examples soon.