Madrid
 +34 641 10 27 16

asic.es: mining hardware supplier in Spain and the EU

About us

asic.es: mining hardware and Antminer firmware in Spain

We sell ASIC miners and spare parts for them, repair hash boards and write our own firmware for Antminer. We work out of Valencia and ship across Spain and the EU.

01What we do

asic.es started as a workshop. At first there was only repair work: hash boards, power supplies, Antminer control boards. Sales came later, once enough machines had gone through our hands to know which ones break less often and which are worth recommending at all.

There are four lines of work now. We sell miners and spare parts across Spain and the EU. We repair and diagnose, and a machine is fixed by the same person who tested it before shipping. We write AsicBoost firmware for Bitmain Antminer: overclocking, undervolting, autotuning.

The fourth one brings no money and takes the most time. It is the knowledge base: manufacturer breakdowns, chip tables, an algorithm reference, log decoding, firmware guides. We write it ourselves and sign it with the author name, so it is clear who to ask about a mistake.

Mining hardware is not a home appliance. A machine is as loud as a vacuum cleaner, heats the room by a couple of kilowatts and needs its own power line. We say this before the deal, even when it gets in the way of the sale.

02What is on the site

You can count all of it yourself, section by section.

  • 212ASIC models with specs and a profitability calculator
  • 45Antminer models with an AsicBoost firmware build
  • 116factory builds and Bitmain SD images with checksums
  • 11mining algorithms broken down by coin and hardware
  • 4site languages: Spanish, English, Russian and Arabic
  • 2.8%firmware developer fee, the same one for every model

03Who works here

For now the company is one person. When there are employees, they will be here, with names and photos, no stock pictures.

  • Denys Klimchuk
    Founder and AsicBoost developer

    He has repaired electronics since 1999 and worked with mining hardware since 2017. He founded the ASIC CLUB service centre in Kyiv, and since 2022 he lives and works in Valencia.

    Firmware code, testing machines before shipping, failure analysis, documentation and Telegram support are on him.

    Full biography and profiles

04Company details

The site belongs to a company registered in Spain. These details are for invoices and for any claims.

Legal entity
ASIC MINER SLU
Founded
2026
Owner
Denys Klimchuk
Email
admin@asic.es
Phone
+34643716472
Working hours
Monday to Sunday, 9:00 to 18:00
Invoices and warranty papers are issued by this legal entity. If an email or another site gives you different details on behalf of asic.es, that is not us.

Updated 7 August 2026