I tried some aMT just last night and had a very similar experience to the post above me.
Took what was approx 10mg, dissolved in water, last meal eaten approx 3 hours prior, around 6pm. I experienced some placebo like effects; general content feeling, enhanced tactile response, slight visual enhancement. When very little appeared to be happening I waited approx 2.5 hours (as this substance can take 2-3 hours to fully develop) and took an additional approx 20-25mg, dissolved in water, around 8:30pm. Within 30 mins there was a slight enhancement of the placebo like effects experienced earlier, music sounded a little better. Around 9:30 or so visual effects started to manifest, first noticed was the slight moving of objects around me, my computer monitor for example seemed to rise up and move around behind my back in a darkened room. Slight notion of shadows moving and other objects noticed while walking stated to feel very light and strange. Music still sounded good, but by no means stunning. Sitting down very faint feelings of pleasant body sensations and mild rushes presented themselves every now and again. Around two hours following this the visual effects started to intensify. Checking my eyes in the mirror showed pupil dilation. The room appeared to mildly morph and appear bigger than it was, the music was loud so set a center piece for everything around it. Again though it was by no means incredible sounding. My head began to be filled with crazy thoughts and at times the feeling could be described as more of a delirious effect, albeit with very slight nausea. Walking around became to feel very dream like and surreal. Every time checking my pupils almost full dilation was present.
Around 2 hours later I decided to lie down and over the next couple of hours the visuals intensified. Closing my eyes the CEV's took the form of awesome kaleidoscopic patterns. As time went on the state of looking from a lying down position on my side outward seemed to switch from almost normal to trippy and mild - medium visual effect. Trials seemed to be apparent and as my eyes switched from one object to another the previous appeared in an after image. Looking directly up at the ceiling was the most visual. The corners of the walls and ceiling morphed and twisted and rippled in a real fucking trippy way!
Generally the visual effects formed the experience, although by no means incredible, they were certainly interesting and entertaining. Although my general mood was fairly fatigued, at times I thought about getting up to walk around the house or put on some music but it never materialized past a thought in my mind. Almost all the time crazy tripped out thoughts running through my head. There was a interesting event around the 5-6 hour mark or so where time and everything around me seemed to slow down but I myself was in normal motion. This only lasted for around a second though. I must have fell asleep after this point as very little else is remembered. A very slight spun out feeling today but nothing too bad.
In conclusion this was a visual trip but with very little of the euphoria and wellbeing and empathy (pretty much absent on all counts) as others have experienced, even at this dose level.
Very interested to experience the dose level that is giving people mdma like feelings of euphoria, music appreciation and empathy. Will probably try 40mg next time. I would have to say I was disappointed for a first time, generally though this could be down to the dose level and not forgetting how set could factor into the experience.
Really don't know if I should take it for my big music event next week in fear of the experience being disappointing again, although that said the other alternative is methylone which won't have the duration I am after, even with a re-dose.