SPL HPm - Dual Headphone Amplifier

The Headphone Monitoring Amplifier for 500 Series. 500 Series double-slot module headphone monitoring amplifier with Phonitor Matrix for two headphones. The headphone output stage The HPm delivers full headphone sound – twice!The output stage of the headphone amplifiers is designed as a push-pull amplifier in Class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves. The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image. The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when operating low-impedance headphones. Both headphone amplifiers provide an individual volume control. Stereo/Mono/Mute The audio signal can be swit