Are Klein and Hummel O300 worth it in 2026?

[patukishithit]

Hi yall, im looking at upgrading my monitoring situation currently have Kali Audio LP-6 V2, looking at options i want to upgrade to KH310 but in my research i found the Klein and Hummel O300 and found some used options at VERY good prices compared to KH310, my question is, are O300s worth it still in good condition, do they hold up to 2026 standards? Any known issues? I’m kind of just asking out of curiosity

 

[staticV3]

Hi @patukishithit! Welcome to ASR.

Here are measurements from K+H:


They're still very much competitive in 2026.

Just make sure that you're listening on-axis and if you want good subbass, use subwoofers.

 

[kemmler3D]

I think the midrange directivity looks a bit funky, (KH310 is not perfect either) so they're not 100% competitive with SOTA in that regard, but on-axis they seem fine. Since they're a bit older you will want to be careful about used units, at around 20 years of age supposedly capacitors start to go out, surrounds might be on their last legs, etc.