The sales of hi-fi equipment have long been driven by people’s desire to upgrade. Normally this means a wholesale change of a component, but it doesn’t necessarily have to.

Electronics brands such as Naim and Cyrus have had considerable success in offering upgrades, such as outboard power supplies, to make their existing components sound even better, so negating the need for outright change. It’s an approach that appeals because it works, and still protects your initial investment.
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