Pass Labs unveiled their new F7 power amplifier with emphasis on sonic purity and getting the first watt right. Unlike other models in their line up, the F7 is a relatively low power (25W/channel into 8-ohms) simple Class A circuit, that sells for a whopping $3k. Pass Labs touts the usage of minimal negative feedback in this design, but is that a good thing? Is Class A operation really necessary in this day and age where electronics have evolved so much and we are more conscious about energy conservation?
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