Page 32 of Digital Home Theater 2007/2008 New Products Catalog by Yamaha Audio & Video

natural sound hifi components yamaha introduces a new superior approach to analog amplifier design a-s2000 natural sound stereo amplifier more than forty years have passed since the introduction and widespread adoption of full transistor hifi audio amps during the 1960s in the 1970s high performance high output pnpnpn transistors made possible the pure complementary configured power amps that are now the main type of high quality audio amps in recent years however digital amps have become popular for their high conversion efficiency and superior uniformity of operating precision as well as for their lower weight size and heat production as compared to analog amps which leads to the question which direction will audiophile-level amps take in the future generally two possibilities are considered continuing to improve the traditional pure complementary configuration analog amps or working to achieve higher sound quality from digital amps but yamaha has selected a third approach this is an entirely new floating and balanced power amp that by using power transistors with the same polarity that are not complementary achieves complete symmetry of pullable operation at the output stage and permits full balanced transmission amplification from the input jack to just before the speaker jack a capability that has long been the dream of audiophiles · full-stage balanced signal transmission · floating balanced power amp · fully balanced control amp · parallel volume and tone controls · four large capacity power supplies for power amp · shunt type local regulators for preamplifier · symmetrical construction · specially designed feet · headphone amp for low impedance drive · discrete phono amp black finish available remote unit 32

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