This is it: http://www.avtoolbox.com/avt8120.shtml
I bought this, wondering if it'd be a AVT-8710 replacement. It is not*
. The "TBC" does nothing, and fails the easy Macrovision test. It doesn't even help with tearing like a pseudo-TBC found in the ES10/15 recorders.
However, the 4-way split may be interesting if you like to make your own short films for Youtube/etc. It's a potentially cool effect if you're doing any retro style shooting.
I want $25 for it, to cover the shipping. Like I said -- cheap!
Comes with the power supply.
The MSRP on this was several hundred.
You'll need 2 BNC>composite adapters: https://www.amazon.com/kenable-Phono...5ede1d003e93eb
* Update: Some versions use some classic green AVT-8710 chipset, and act as TBCs. Some do not. This unit was a "not".