P 1&P 2 are professional monitor speakers from ATC. They use the most effective modern engineering principles and are mostly handmade. They have good sound quality and performance.
This manual covers the ATC PI Pro and P2 Pro professional stereo power amplifiers, which are designed to partner ATC passive monitors and other studio loudspeaker systems. Both models feature identical 3U 19" rack mount chassis and differ only by their output power capability. They incorporate gain reduction and loudspeaker protection circuits to prevent clipping and protect drive units.
The PI Pro is a 150 watts/channel professional power amplifier.
The ambient temperature in the mounting space must not exceed 30°C.