It’s hard to believe the Celestion SL600 was made 40 years ago in 1983. Still today, I think these speakers are utterly unrivaled in terms of sound (incredibly smooth and detailed midrange) and build quality (Aerolam material used for enclosures). I see why Stereophile listed it as one of the "Best top 25 speakers of past 40 years.”

Also, the 23 WPC Sugden A21 Signature drives the 82db SL600 better than any amp I've owned, and the Aurender A100 does a phenomenal job as a streamer.