I saw these custom boxes at a studio one time and haven't been able to find any info for build. I opened one up, just a box with a transformer (maybe 2) and a pot or stepped attenuator, high quality parts. multiple boxes chained together with xlr in and out presumably powered by an amp in the control room. the only thing similar I could find online is this: http://www.canford.co.uk/Promotions/2008/Canford/3.aspx
any ideas? looks super simple to build but the parts cost may be prohibitive
any ideas? looks super simple to build but the parts cost may be prohibitive