Classé Audio DR-3 power amplifier

A well-worn, if unproven, audiophile rule of thumb says that a small, quick amplifier will sound better than a very powerful one. Among low-powered amps, those that operate in "pure" class-A are thought to be sonically superior. Pure class-A means the amplifier must run a constant high bias (more than one ampere), so the output devices never turn off.