sure. "basically"
the neve output transformers are in fact made of pretty much exactly the same materials as a common linear power transformer. so are api output transformers, the output transformer in the 1176 compressor, nearly every tube guitar amp transformer, tube hifi stereos, etc. its just electrical steel, a nylon bobbin, some copper magnet wire and insulating tape.
and it is also true that the way that the parts are put together in a neve output (or any of the other examples above) is not much more complicated than a linear power transformer.
really, if you had a day or two to work on it, you could take apart and unwind a similar size power transformer, and (with nearly infinite patience because it would take several hours to do each step by hand) put those same parts back together as something resembling a neve output. all the info you need is here on the forum if you search for it.
but there are some "little" differences in the way the neve output is constructed. the most important one is the way that the core is put together. if you look at a typical linear power transformer, you'll see that the core is made of thin sheets in the shape of E and I. on 99.9% of all transformers made today, each layer of E and I will alternate direction, because that's what works best for a power transformer and most audio transformers. the single ended neve circuit is an exception where that will not work. if you use a transformer built like that, the bass will sound flabby and distorted, really not good at all. the way that single ended circuits work is that they get their DC operating current through the primary winding of the output transformer. in order for that DC current not to ruin the transformer's performance, the core needs to be constructed so that all the Es and Is are facing the same way, creating a very small gap that runs all the way through the core. the gap prevents the DC current from ruining the audio performance of the transformer. the gap also affects other aspects of the transformer performance as well, which leads to other design changes, and so on...
long story short, power transformers cores generally do not have the gap that is needed to work in a single ended circuit, so they will not work in a neve 1290/1272/1084/1073 type circuit.
a power transformer that size is ~$15 vs the proper 1166 type output transformer at ~$30 from audio maintenance or hairball audio. you are paying "double" for similar parts put together a different way, but it will actually work and that should be worth something to you...
EDIT: i should add that i am "biased" (subtle humor) by the fact that i make the 1166 types for sale in the hairball audio shop.
ed