The Sunfire Cinema Grand is a legendary vintage 5-channel high-fidelity multi-channel power amplifier engineered explicitly to drive demanding high-end home theater and multi-channel audio speaker configurations. Unlike an all-in-one A/V receiver, this unit has no built-in volume knob, radio tuner, or source inputs; it is a dedicated power amplifier meant to be paired with a standalone preamplifier (like the Sunfire Theater Grand Processor). It is famous in the audiophile community for its distinct, signature front-panel analog meter displaying "Power Supply Joules", and its revolutionary ability to output enormous amounts of power without generating the extreme heat typical of massive Class AB amplifiers. [1, 2, 3, 4, 5]