cool, another nice looking summing system I just found. Has anyone had the opportunity to try this, how does it match up with others?

Excerpt:

Fat Bustard - 12 channel mixing with attitude
The new valve summing mixer is now finalized and in production, with the first units scheduled for delivery end of July 2008.
More than just a straight summing mixer, this new offering provides sound shaping possibilities too, with a simple yet powerful bass ( 50Hz ) and treble ( 10kHz ), Stereo Width and Depth controls, and the new ‘Attitude’ distortion section. The inputs are arranged as 4x stereo pairs and 4 mono, all with mutes, the mono inputs also have pan pots too. Two additional Aux inputs are provided for echo returns and the optional forthcoming Little Bustard 16 channel expander. The Fat Bustard lives up to its name-guaranteeing Big Fat Sounds!

Excerpt:

LITTLE BUSTARD - 16 CHANNEL VALVE SUMMING MIXER
Thermionic Culture have released the Little Bustard, their second valve summing mixer which has been designed to complement the Fat Bustard valve summing mixer by increasing the number of inputs channels. Or the new 19" 2u Little Bustard can be used independently by itself as a stand alone mixer. Features include 16 input channels arranged as 6x stereo pairs with fixed gain at unity level with on/off switches, 4x mono inputs with mute switches and pan pots which can be defeated by another switch adding an extra 6dB of gain. The master output section has independent left right 31 position output indented pots with a gain range from 17db to +2db. The valve stages use a pair of ECC83/12AX7 on the gain stage, and a pair of PC86s for the output stage. The master section will also have a simple output level indicator. To create a monster-summing mixer, The Little Bustard's outputs can be plugged into the Fat Bustard's AUX inputs increasing the number of channels to 28.

cool, more and more summing amps to learn about...