Two years ago this specification cost $1,600. The Obsidian is the machine that collapsed that price, and it is the reason the $600-900 band is now the best value in the whole category.
3-micron filtration is the headline, and it earns it
A micron is a thousandth of a millimeter. Pool sand runs 100-500 microns, silt and pollen 2-50, and dead algae after a shock treatment just a few. A standard 180-micron basket — what most machines under $600 ship with — passes the entire fine fraction straight back into your water. That is why “it just pushes the sand around” is the most common complaint in this category, and why it is a filtration problem rather than a suction problem.
Aiper publishes 3-micron MicroMesh here. Only its own X1 Pro Max matches it, at double the price. The filtration explainer sets out what these numbers actually catch, and the sand and silt roundup ranks on exactly this.
The charging dock changes ownership more than any spec
This is the feature we would pay for over any other on this page. The task that actually stops people running their robot is not cost or complexity — it is lifting a wet twenty-odd pound machine out of the water, carrying it to an outlet, and remembering to carry it back. A dock removes the whole loop: the robot returns, charges and runs again.
The practical consequence is that a docked robot runs three times a week where an undocked one runs once, and frequency is what removes debris. It also means the Obsidian is one of the few machines designed to live in the pool — which for most robots is a bad idea.
180 minutes and 6,600 GPH
Three hours of rated runtime is enough to cover a large residential pool in a single cycle, which matters because a machine that covers 70% and parks leaves the same 30% dirty every time. 6,600 GPH matches the Aiper X1 and beats every Beatbot in the Sora line.
Coverage is published as floor, walls and waterline — the full set, not floor-and-walls.
The honest weaknesses
It is new. A 2026 model with a short public track record, which on a cordless machine matters: the question that decides a cordless robot’s life is whether a replacement battery will be sold, and there is no answer yet. Aiper’s record here is encouraging — third-party 8 Ah packs for the Scuba S1 sell at around $80 — but encouraging is not the same as available. The battery section lists what exists today.
The discount is deep. The listing shows a large reduction against a high list price. Judge it on the live figure in the buy button above with the date attached, not on the struck-through number.
Inground only. The mass and the coverage logic are wrong for a soft-sided or small above-ground pool.
What to buy instead, and when
If you want several seasons of owner feedback behind your purchase, the Dolphin Nautilus CC Plus at a similar price has no battery at all and a decade of parts support — that comparison is the real decision here. If your debris is coarse leaves rather than fine sediment, the 3-micron filter is wasted and a Beatbot Sora 10 with a 5-liter basket is the better machine for half the money.
How we assessed it
Every figure in the specification table on this page is attributed: to Aiper’s published specifications, to the Amazon listing for this exact model, or marked as not published where neither source gives a figure. The score is derived from those published numbers by the five-metric rubric, which is published in full.
This assessment is built from Aiper’s published specifications, recognized industry standards and verified owner feedback, scored on our published rubric. Every number shows where it came from, the page says plainly who the machine is wrong for, and no figure appears that we cannot source. Where owner reports inform a point, they are described as owner reports. Where independent laboratory or standards work exists for a figure, it is cited by name.
Who should skip it
Skip the Aiper Obsidian if you want a model with several seasons of owner feedback behind it, or your pool is above-ground.
That is not a throwaway line. The most expensive mistake in this category is buying a capable machine that is wrong for your pool — and a machine rated below your pool’s area or missing the one capability your debris requires cannot be fixed by any setting.
Alternatives worth considering
- Dolphin Nautilus CC Plus — no battery and a decade of cheap stocked parts, at a similar price. Read the review
- Beatbot Sora 10 — a 5-liter basket for leaf-heavy pools, at about $300 less. Read the review
- Aiper Scuba X1 Pro Max — 8,500 GPH and surface skimming too, if budget is no constraint. Read the review
If you are still narrowing down, the selector tool works from your pool type, size, surface and dominant debris, and the Aiper brand guide covers the whole range and where it stops.
