The Bruel & Kjaer Charge Amplifier Type 2635 is a high-quality sound level meter accessory manufactured by Bruel & Kjær in Denmark. This amplifier is designed to enhance the sensitivity of sound level meters, allowing for more accurate measurements in a variety of industrial and testing environments. With its durable construction and reliable performance, the Bruel & Kjaer Charge Amplifier Type 2635 is a valuable tool for professionals seeking precise sound level measurements.