whitestix I will look forward to hearing your impressions of the Buchardt S 400 SE vs the Spatial Audio M4 Triode Masters. What room dimensions and associated equipment do you have? What size room did your friend have the Buchardt's in? Did he use a sub with them? I have a large room approximately 24' x 22' and I use dual subs. What other speakers have you owned for reference prior to the Spatial? I am also interested in the Tekton Double Impact and Monitor.