The power amplifier is the final component in the signal chain before the loudspeakers. It is the workhorse of a hi-fi system. It takes the low-level signal from the pre-amplifier and converts it to a powerful signal to drive the loudspeakers. It has a low-level input to receive the signal from the preamplifier, and terminals for connecting loudspeaker cables.
Because of the power amplifier's unique function, it differs from other components in size, weight and use. High-quality power amplifiers are usually large and heavy. Moreover, the power amplifier is the component you don't need to touch and adjust. Consequently, power amplifiers are often placed on the floor near the loudspeakers rather than in an equipment rack.
STEREO POWER AMPLIFIER:
A power amplifier with two audio channels (left and right) in one chassis.
MONOBLOCK POWER AMPLIFIER:
A power amplifier with only one audio channel per chassis. Two monoblocks are required for stereo reproduction.
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EAR 534 Power Amplifier
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The EAR534 has been designed to meet a wide variety of needs, from the most demanding of audiophiles to the professional seeking high quality monitoring equipment in the studio field. The circuit design uses push-pull output and driver stages, a hight quality in-house designed output transformer and low negative feedback. It is capable of operationg in bridged-mono mode, to make a true mono block amplifier. Tube life is long (and replacement costs are modest) and the circuit operates in pre Class A.
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