Boulder 865Price: $12,500

Website: www.boulderamp.com

Randall said: The Boulder 865 is the most detailed and transparent integrated amplifier I’ve heard over the past year: Its highs and lows were impressively extended and detailed, and its midrange was very smooth and natural. If I were banished to a desert island and could bring only one integrated amplifier with me, the Boulder 865 would be it. It’s the best option I know of for someone who doesn’t want separates but still wants reference-grade sound.

Reviewers' Choice

Read the SoundStage! Hi-Fi review.

The gist: A reference for integrated-amp performance.