@prof Wait I never called the tact eq box snake oil. The other member of Audiogon did. Then I tried to explain why that argument was somewhat valid but I agree it's not snake oil in the strictest sense.
TacT processor was not snake oil in any sense, strict or otherwise. It was a pioneering system with multi channel Room EQ and digital in and out. It was what led to Room EQ eventually becoming standard in every AV processor or Receiver you buy today. It was and has been transformative.
The processor was expensive to build. Each channel had a dedicated board with its own high performance, dedicated DSP. It was a marvel of audio engineering:
You are completely out of line with this line of questioning and discussion.