I've heard the Boulder 865 integrated & really like it's sound which is surprisingly powerful for an integrated, natural sounding & accurate. You can really hear the quality in these amps..no trace of distortion or noise, the Boulder just lets the music through and gets out of the way. This series gets a bad wrap for a couple of reasons; it is dead neutral and *does* need a good tube preamp upstream imho. Secondly, Boulder amps should be left on 24/7 and kept warm, or they don't sound good. If kept on standby, still allow a couple of hours before doing any critical listening. I would say of the 800 series, the 865 integrated is the standout.
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