This seemed to be the best forum to place this. I'm surprised I didn't see any other thread mentioning TBCs' here.
I'm in the market for a TBC and have ruled out older 'rack mount' models form the early to mid 90's due to their older technology. I have found this 'consumer' TBC which seems popular (no doubt due to price) that I'm considering. This is to transfer around 15 SVHS tapes to DVD (with a stand alone DVD Recorder). The recorder has a poor video AGC circuit and a TBC is the answer.
I just called the manufacture/importer; TVOne, and talked to a salesman. He tells me the more expensive 1T-TBC is a overall better proformer than the AVT-8710.
It has continuously variable adjustments (eg.: like a volumne control) vs 'stepped' adjustments (eg.: bass & treble controls for a car radio) with the 8710. He also says it has better freq. response than the 1T-TBC and can lock to lower quality signals. I asked him about the freq. response and S/N ratio of the 8710 and how many steps and resulting db change each press of the button would provide when using the Proc Amp controls. He had no idea (no surprise). He offered to pass me over to someone in technical.
I repeated the questions, but didn't really get any answers. There are published specs for the 1T-TBC, but none for the AVT-8710 other than size, weight and ins and outs. He then talked to someone else and admitted both have the same circuit board. $230 more for a metal case, BNC connectors, two inputs and audio pass through.
My questions are;
1. Can the plastic case of the 8710 be opened (screws), or is it glued?,
2. Has anyone opened it and took pictures?,
3. How many 'steps' plus and minus from center for each proc amp control?
The last one might need a scope to verify unless you have a good eye.