These are .... really good. If you had any doubts about the difference the materials type isolation of a transducer component makes to the sound quality then come in and try a conventional pair of iron stands followed by these acrylic wonders. I was jolly transfixed for a while ... playing a set of Audience 42's through a Brio and Apollo on these stands I was just hit with a mega Pulsar Point type experience ... there is such a difference made by this increasing of isolation that opens up another layer in the music and lets you get more music into the head ... which is what it's all about really.
Also if you like some post-apartheid bling then the Quadraspire QX-600 speaker stands are for you. Support your hifi elegantly with the QX-600 acrylic stands from Quadraspire. Although they don't look like a traditional speaker support, they do the job extremely well, providing effective decoupling for your speakers.
"Developed from Quadraspire’s acrylic Q4 Reference Tables, QX! Silencer is designed and manufactured from low-mass inert acrylic for resonance-free isolation support. The unique Quadraspire curve ensures minimal contact, de-coupling and freeing audio components from their environment.
Developed specifically for stand mounted speakers, the loudspeaker stands ensure state of the art support. Listen to your speakers not your stands !"
*Reprinted from manufacturers website