to increase the flexibility of sends, either adding another send or being able to connect more than 1 device to the output of a send.
If I'm understanding you mj, you're sort of trying to accomplish what this useful little TEAC gem can do: distribute one or two line-level signals to four discrete line-level devices, two discrete stereo line-level devices, or some combination thereof.
Meant to be a 4 in x 2 out line-level signal combiner, it also works in reverse (2 in x 4 out) as a line-level signal distributor.
Thinking in reverse of the labeling, The "Left" (white RCA plug) or "Right" (red RCA plug) become input signal sources that each can be sent to each of the the "Track" output jacks discretely or in combination.
----------------------------------------------------------------------------------
SETUP
For example, again thinking in reverse of the labeling:
- the "Left" RCA plug (now an input) might be a feed from "Send 1",
- the "Right" RCA plug (now an input) might be a feed from "Send 2".
- "Track 1" might be connected to a mono Reverb;
- "Track 2" might be connected to a mono Vocal Processor;
- "Track 3" might be connected to a mono EQ; and
- "Track 4" might be connected to a mono Compressor.
APPLICATION
Set the "Track 1" switch to "L" and the "Send 1" feed signal ("L") goes to the Reverb. Set the "Track 1" switch to "R" and the "Send 2" feed signal ("R") goes to the Reverb. Set the "Track 1" switch in the center and both the "Send 1" and "Send 2 feed signals go to the Reverb.
Or, in a different configuration, using the DP stereo outs instead of the Sends as the input source:
"Track 1" (set to "L") and "Track 3" (Set to "R") could provide a stereo signal to a stereo signal processor;
"Track 2" (set to "L") and "Track 4" (Set to "R") could provide a stereo signal to a stereo EQ.
-------------------------------------------------------------------------------------
The discouraging news: TEAC no longer sells this, but I have seen it once or twice over the years on reverb.com and e-bay.
EDIT:
There's one on e-bay right now (ends 12/31/18):
https://www.ebay.com/itm/TEAC-AX-20...h=item36419bdd56:g:DUUAAOSwx-lb9FhX:rk:1:pf:0
But, I imagine there also must be reasonably priced
line-level signal distributors on the market now that can do the same thing.
===========================
ps - I wouldn't encourage using the headphone out jack for any purpose other than feeding a headphone. It's a LowZ jack (32 Ohm) that puts out a very strong signal (70 mW or more per side).
===========================