Classé Audio's DR-3 once again brings to the fore the issues of class-A vs class-AB, weighty vs small and efficient, and brute-force expensive vs clever and inexpensive.
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.
Sun, 12/01/1985Original Article