Happy New Year!
> a tube summing amp circuit .... I found this:That's not a summing circuit.
The tubes of course don't care what frequency they distort
go to kubarth.com, look at "GDIY files" and then "vintage german modules" for the TAB V75 schematic
There is a reason big desks don't do it like this
I am made of kool-aid for christs sake!
what about 'virtual earth'?
I use Akai DR16 PRO hardware recorders.These are modular in design, and contain an internal mixer.Often I compile Bass and drums on one machine, and vocals and everything else on another, (although this could be further subdivided to more machines if it was of value). Each stereo output then goes to seperate processors (compression etc) and summed with the SSA 2A.How hard the valve summing amp is driven affects the final tonal colour.The output is saved as 88.1 files and completed with software limiting and format conversion to the end product (usually CD).
For summing of many channels there´s always the option to group a number of channels together into one summing amp and later sum the groups together in a second summing stage. This helps keeping many tradeoffs small but obviously add complexity and noise.
RE: cascading summing stages:At how many summed tracks does this really become an issue/solution?32? 64?cheers!