I want to share my impressions on a great DIY device which optimises the sound in the listening room. It's called The Brodule and has been invented by Audiophile Apiguide, a French audiophile. It's cheap to make (€40) and produces extraordinary results.To me, the Brodule is one of the best DIY audio tweaks of all times as far as room optimisation is concerned. It will change your listening experience.
Please have a look at my blog.
This is not a joke. It really works.