Ultracompact channel preamplifier with a metal casing; portable and durable for desktop or mobile use. Converts telephone signals to linelevel signals, enabling easy integration of telephone audio with mixers, recorders, and amplifiers. PP500 Record Player Preamplifier provides a dedicated preamplification path for turntable audio. Equipped with volume control knobs for simple, precise level adjustment of outputs. Use cases Home audio or small studio setup: connect a turntable to a mixer or powered speakers via the PP500 preamplifier to improve signal quality and gain. Telephony integration in offices or classrooms: route telephone audio through the preamplifier to a mixer, PA system, or recording device for playback or capture. Portable demonstrations or compact event setups: leverage the ultracompact form factor and metal housing for quick setup and reliable performance in small venues.