Actually, I am referring to the fact that aMT is both a triple reuptake inhibitor and also a triple monoamine releaser at the same time. In a decent dose, these effects come together and effectively turn aMT into an antidepressant that kicks in as soon as it begins to take effect (the "speedy" part before the plateau).
Its activity on MAO is not that great, its about equi-potent to harmala alkaloids which have doses greater than 100mg (I've heard 200mg but I could be wrong on that) - the big problem with aMT combinations is its dual mode of action, simultaneously releasing all three primary monoamines (serotinin, dopamine, and norepinephrine) while blocking their reuptake as well but this is what is largely responsible for its effectiveness as an antidepressant. Its serotonin agonism obviously accounts for its psychedelia although its similarity in structure to serotonin in the first place probably fits in there somewhere like a,O-dimethylserotonin aka 5-MeO-aMT.
Indopan was a very effective anti-depressant used in the USSR - along with the tricyclics, it was one of the few antidepressants to actually be markedly better than placebo and it was only used in 5mg and 10mg doses to achieve the effects.
EDIT: "α-Metyltryptamine (AMT), a tryptamine derivative, was one of the strongest re-uptake inhibitors and releasers of the three monoamines. The tryptamine derivative, 5-methoxy-α-methyltryptamine (5-MeO-AMT), also strongly inhibited re-uptake and increased the release of the three monoamines."
Source:
http://www.sciencedirect.com/science/article/pii/S0014299906013811
I had a whole shitload of documents on aMT but I believe those are long gone now as they were on an old hard drive. I'll have to look.
Either way, the best anti-depressant that has ever hit the market was pulled because of abuse potential. Unlike aET, aMT never had a single case of agranulocytosis associated with it and was withdrawn purely on the abuse basis. Not only that, it was and still is the fastest-acting anti-depressant with an average time of 5 days to complete depression reversal at the 10mg dose.