MicroBT Whatsminer M31S+ 80 TH

An ASIC miner (also called a BTC miner or crypto miner) is hardware built for a single job: mining Bitcoin using the SHA-256 algorithm. Unlike a PC or graphics card, an ASIC (Application-Specific Integrated Circuit) does only this, but does it extremely efficiently. Efficiency is measured in joules per terahash (J/TH): the lower the number, the less electricity each unit of mining work costs.

No. All our miners ship from our warehouse in Austria. Customers inside the EU (including Germany, Austria, France, Finland, Sweden, and more) pay no customs or import duties. The shop price is the final price.

Customers outside the EU will pay country-specific import duties on delivery, we only display the net price for such orders.

In-stock miners typically arrive within 2–3 business days across the DACH region.

For pre-orders or custom configurations, the expected lead time is stated directly on the product page. All orders over €200 inside the EU qualify for free shipping.

All new, originally packaged ASIC miners we sell come with a 12-month warranty, provided the operating conditions (ambient temperature, power supply, no overclocking) are observed.

Repairs or replacements are handled directly through our European support, no return to China or the US required.

Technically, every ASIC miner converts ~100% of its electricity into heat, that is the physical reality. For residential heating use, we recommend our Ofen 2 series: insulated housing, quiet operation, designed as furniture, and a control app.

Plain ASIC miners (e.g. Antminer S21) can also be used as a heat source for basements, offices, or workshops, but they are louder and less living-room friendly.

We accept SEPA transfer, credit and debit cards (Visa, Mastercard), Apple Pay, Google Pay, and Klarna (pay-over-time).

For B2B orders and larger quantities, we offer custom payment terms, contact our business team for details.

Yes to all three. We sell the Bitaxe 603 Gamma at 1.54 TH/s, the Bitaxe 602 Gamma Premium at 1.3 TH/s, plus the Nerdaxe Gamma Premium at 1.3 TH/s and around 19.5 W.

They ship from our warehouse in Austria, so there is no customs hassle inside the EU. You get a 12 month warranty, support runs through our European team, and nothing has to go back to China or the US.

We are happy to help you get it set up.