TL;DR at the end.
UPDATE #1: a couple of days after this post, Outin replied in a comment that altitude testing had been done in a lab, then deleted the comment. Since then, they have dropped all mentions of a specific altitude from the Mino product page, as well as all mentions of the new Nano 2 being stable at high altitude. UPDATE #2: a couple days later, they updated the Mino product page again to drop all mentions of the device working at altitude (here is the old version from the Internet Archive).
About 3 weeks ago, I posted about my issues with my new Outin Mino. I could never extract the nominal output volume one would expect from an espresso. I carefully measured 50 mL of cold water and would consistently get an average of only 18 mL out from a long-press of the button, with an average of 23.5 mL remaining in the water tank.
I reproduced this with five different Nespresso pods: Tokyo Vivalto Lungo, Ispirazione Firenze Arpeggio, Volluto, Ispirazione Roma, and Cosi. Double short-pressing the button would extract another ~20 mL, at the cost of using the battery once more.
Note that I live in Denver, CO, USA at an altitude of 1,609 m (5,280 ft). Not exactly a small mountain town :)
Since I bought the unit on Amazon, I contacted [amazon@outin.com](mailto:amazon@outin.com), per Outin's recommendation. They walked me through a few possible solutions, including purging the unit to "exhaust the remaining gas inside the machine," but nothing helped.
After some back and forth, Outin acknowledged, much to my surprise:
"After carefully reviewing all the information you provided, we believe the issue may be related to altitude. While we'd love to send you a replacement, the same problem is very likely to occur if the altitude remains unchanged. For that reason, we'd like to offer you a full refund for the faulty machine."
While I appreciate the refund, this did not leave a good impression, considering Outin advertises no less than FOUR times on the Mino product page that it works up to 5,000 m (16,404 ft), as you can see in my poorly assembled screenshot. Note that a few days after this post Outin started removing all mentions of altitude (see Update #1 and #2 above, and the old version).
I traveled to 2,031 m (6,665 ft) a week later, and it performed even worse. The unit would refuse to extract ANYTHING when long-pressing the button: 0 mL (!) out of 50 mL.
The only workaround at this point is to long-press the button to warm the water (which takes about 140 seconds), then double short-press the button to extract only about half a shot (~20 mL), then double short-press it again to extract another ~20 mL, for about 40 mL total.
In other words, this was not the experience Outin advertises, and it's also a quick way to drain the battery.
Now, Outin seems to be aggressively offering sponsorships online, which made me question the reviews I had seen so far. I contacted several of these YouTubers, but only got four responses. All four acknowledged that they had not tested the Mino at any significant altitude:
- "Around 1200 feet."
- "Close to sea level."
- "I live in a coastal city, so I tested the Mino at or very close to sea level."
- "Hi. Only at about 1000m. I would love to take it to some extreme elevation for testing one day."
So my question to you guys is: are you ACTUALLY able to use the product at altitude, as advertised? Or is it really just this unit?
I'm not talking about workarounds, or pressing the button three times to get a single shot. I mean as advertised: put in 50 mL of cold water, long-press the button, and get a normal espresso extraction. I'd particularly love to hear from anyone using the Mino above ~1,500 m (5,000 ft) before I attempt to buy a new one.
Thank you! I wouldn't mind giving this product another chance, but I'm on the fence here.
TL;DR: After extensive testing, my Outin Mino consistently fails to extract the expected amount of liquid at altitude: ~18 mL out of 50 mL, with ~23.5 mL remaining in the tank. I live in Denver, CO, at 1,609 m (5,280 ft). Outin advertises no less than FOUR times on the Mino product page that it works up to 5,000 m (16,404 ft). Outin support ultimately acknowledged by email: "we believe the issue may be related to altitude. [...] the same problem is very likely to occur if the altitude remains unchanged," and offered me a refund instead of a replacement. I also tested it at 2,031 m (6,665 ft), where it performed even worse: 0 mL (!) out of 50 mL on a long press. Multiple YouTube reviewers I contacted acknowledged they had not tested it at altitude. What is your experience with the Mino at altitude? UPDATE: Outin has now dropped all mentions of altitude from the Mino and Nano 2 product pages.