DIY vacuum tube mixing board

Between building gear and working sessions at the studio, I've been making some upgrades to some of my studio gear.  One of these upgrades was done to the prototype mixing board I built from scratch several years ago.  Its 12 channels of vacuum tube powered analog mixing.  

I added 12 volume controls to the board and improved its output amplifier.  Previously I was controlling volume either in Pro Tools or with outboard analog gear.  The out amp got a boost in headroom, making for a cleaner, punchier sound.  This is a prototype board.  It works and sounds great, but definitely not a product.  I'm using this as a developmental stepping stone for creating a larger, more complex board.  If you're in the area and would like to check out the board in person, contact to set up an appointment at www.lbastudios.com.