The Bruel & Kjaer 5935 Dual Microphone Power Supply is a high-quality product manufactured by Brüel & Kjær in Denmark. This power supply is designed specifically for use with sound level meters and provides a reliable and efficient power source for dual microphones. With its durable construction and innovative design, the Bruel & Kjaer 5935 is a valuable tool for professionals in the field of sound measurement and inspection.