Behringer OT-1 transformer

[Alex1238]

I have a couple early behringer MDX2100s i happen to be quite fond of and plan on getting a couple MDX1000s, as these are pretty accurate clones of desireable units that also mod pretty well for an unbeatable price. To the question, a common mod for these seems to be filling the unpopulated output transformer slot intended for a model OT-1 transformer, similar to later DBX 160X/XT units with Jensen 123 transformers (i think). Now, the only way to get these transformers nowadays appears to be shucking them out of DI100 and DI4000 active DIs, which are sporadically available for very cheap, so i wonder if a suitable replacement can't be found that is available off the shelf. Does anyone have one of these transformers on hand that would be willing to measure at least DCR and check the pin configuration? I'm inclined to suspect that these are identical to the dbx ones (JT-123-DBX), the pin spacing and connections to the board appear to check out at least, the jensens might be a touch on the pricy side for what they're going into however. Another possibility is the Vigortronix VTX-101-00x line, these are mechanically identical to the jensens and are also used in the Klark Teknik DI boxes, while not the finest iron on the market they at least ought to be as good if not better than the OT-1s. Finally, for the OT-1s 9th pin, i suspect this pin is n/c and is only there for alignment, could someone confirm that please? Thank you!