One of the most recognizable icons of hi-fi audio, the original McIntosh monoblock vacuum-tube power amplifier featured a sleek black exterior and mesmerizing, glowing power meters along with top-of-the-line audio quality. Recognizing the appeal of its vintage gear, the company has re-released the MC75 amplifier and the C22 preamplifier—updated and improved to meet the exacting standards of the modern audiophile. The MC75 is a mono amplifier that delivers 75 watts to 2, 4, or 8 ohm loudspeakers. It incorporate…