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• Does Quad provide service for their products?

• What are the different models of control units produced by QUAD?

• What are the different models of current dumping power amplifiers produced by QUAD?

• What are the different models of monobloc power amplifiers produced by QUAD?

• What are the different models of stereo power amplifiers produced by QUAD?

• What are the notable features of the Quad Electrostatic Loudspeaker (ESL)?

• What does the acronym 'QUAD' stand for?

• What is the design of the electrostatic models?