Bitaxe Supra Review 2025

The Bitaxe Supra (400 Series), is the third major revision in the Bitaxe open source project lineup, following the Bitaxe Max and the Bitaxe Ultra. While it may not be the latest release at the time of writing (that title belongs to the Gamma), the Supra strikes an ideal balance between performance and affordability.

At the heart of this performance leap is the BM1368 ASIC chip, derived from Bitmain’s Antminer S21 and S21 XP, S21 Hydro, and T21 hash boards, which delivers an exceptional efficiency of 17 J/TH. With this chip, the Bitaxe Supra achieves around 0.6 TH/s (a range between 625 GH/s up to 775 GH/s) while consuming a mere 14 watts of power—comparable to an LED light bulb or a Raspberry Pi 4.

The Bitaxe Supra 400 Series doesn’t just edge out its competition—most of which is closed-source—it dominates it. Devices like the Canaan Avalon Nano 3 (29 J/TH), the Braiins BMM 101 (35 J/TH), and even newer models like the Canaan Avalon Nano 3S (23 J/TH), released a year later, pale in comparison.

But this isn’t just a story of outperforming rivals. It’s about uncovering the origins of, probably, one of the most interesting FOSS projects in Bitcoin. Who developed it? Where can you acquire it? How do you begin mining with it? And, crucially, what should you mine, where, and how? In this Bitaxe Supra review, I’ll delve into all these questions and more.

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Description	Details
🌐 Website	dtvelectronics.com
🏙️ Manufacturer Location	Europe
📅 Year Released	2025
💻 Hardware Model	Bitaxe Supra (400 series)
🚀 Processing Power	≈ 0.6 TH/s
🔨 Mining Algorithm	SHA-256
📡 Connectivity	Wi-Fi (2.4GHz)
🔒 Security Features	Open-source firmware, no forced login
⚙️ Compatibility	Compatible with Stratum Pools
📈 Scalability	Can run multiple units at home with minimal power usage
💡 Power Consumption	≈ 15W
📏 Dimensions	100mm(L) * 60mm(W) * 50mm(H)
⚖️ Weight	~146g
📱 Mobile App	N/A
💬 Customer Support	Email via DTV Electronics
🔄 Open Source	Yes (Hardware & Software)
💳 Price	~€100-200
🌍 Shipping Availability	Worldwide
📜 Warranty	12 months
📖 User Reviews	Highly rated for quality, efficiency, and open-source design

Bitaxe Supra: What Is It?

The Bitaxe Supra is a compact, single-chip, extremely efficient Bitcoin miner designed for home or office use. Simply keep it powered and connected to a mining pool, and it will generate satoshis in exchange for the electricity it consumes. It’s about the size of a Raspberry Pi and uses so little power that the cost is almost negligible—comparable to a light bulb. You can even run it on solar power for zero energy costs.

Unlike industrial miners, the Bitaxe Supra is quieter and consumes far less electricity while maintaining the same efficiency as high-end models like the Antminer S21, thanks to its advanced chip. This means you get professional-grade mining performance at a fraction of the cost.

This review focuses on a special version by DTV Electronics, which comes with unique features we’ll explore in detail.

Bitaxe Supra Main Features

The Bitaxe Supra is an open-source project by @skot9000, an electrical engineer passionate about Bitcoin and open-source technology.

He made the entire project freely available, sharing the electronic schematics, a component sourcing guide, and even the open-source firmware, AxeOS, the official Bitaxe software.

The beauty of this project lies in its flexibility—anyone can build, modify, and improve both the hardware and software. That’s exactly what we did at DTV Electronics with our custom version of the Bitaxe Supra.

Form Factor

This special edition of the Bitaxe Supra was designed by us at DTV Electronics, and features a sleek black enclosure. It has been 3D printed, sanded and sprayed for an ultra-smooth finish and professional appearance. It provides excellent airflow to the large internal heatsink while keeping the overall size compact, like all Bitaxe models.

What sets it apart is its improved usability—unlike other versions, the board is fully enclosed, making it safer. No exposed parts mean there’s little risk of kids or pets accidentally touching the fan or the internal electrical part. The Bitaxe Supra and Bitaxe logos look fantastic, and the OSMU Collective logo is a great touch too. Since this is an OSMU Approved board, it’s a far cry from low-quality Chinese knockoffs on Aliexpress—it’s built to last, and this is proved by the 12 months warranty (more on that later).

Like our CmRat, this miner operates with just one power cable. Thanks to the built-in Wi-Fi module, it connects to the internet seamlessly—no extra cables needed.

Hashing Power

The Bitaxe Supra is powered by one Antminer S21 chip, a high-efficiency mining chip from Bitmain, released in 2024. While details like the exact nanometer process, factory, and origin aren’t officially confirmed, it’s widely believed to be a 7nm chip produced in China.

This miner delivers a hashing power between 0.6 TH/s and 0.7 TH/s, and even higher depending on whether you choose to overclock—which is entirely up to you. With AxeOS, you have full control over tuning and optimization.

Power Consumption

One of the biggest perks of the Bitaxe Supra is its low power consumption, ranging from 10 to 20 watts, just like a cellphone charger. Running it 24/7 won’t even make a dent in your electricity bill. It doesn’t heat, it doesn’t make noise. You can basically plug it in, and forget about it.

Efficiency

The Bitaxe Supra is incredibly efficient, boasting 17 J/TH. It outperforms even home miners released a year later by using a professional-grade chip without compromises. Its large heatsink ensures excellent cooling, keeping efficiency steady. You can probably get even better efficiency results with aftermarket cooling solutions.

Connectivity

You can place the Bitaxe Supra almost anywhere, as long as there’s internet connectivity. It has a built-in Wi-Fi module, though it lacks an Ethernet port. While Wi-Fi can sometimes result in packet loss, this isn’t a major issue since the Supra is designed more as a lottery/solo miner than an industrial-grade setup, so the occasional connectivity hiccup is acceptable. However, I never had any Wi-Fi connectivity problem with this module. Make sure you place it in a spot with the best Wi-Fi coverage possible.

Compatibility

The Bitaxe Supra supports Stratum v1, a protocol compatible with any mining pool that uses it. This gives you the flexibility to mine on any pool you prefer, such as OCEAN, by connecting via a public address or creating your own block with DATUM. You can also mine on FPPS pools like Braiins, or even solo/lottery pools like CK Pool, Kano Pool, Public Pool, and more.

Software

The software is definitely one of the most exciting aspects of the Bitaxe Supra. It’s fully open-source and well-designed. It also receives constant OTA updates.

The core software is called ESP-Miner, while the user interface (what you see) is AxeOS. Development is entirely open-source, allowing anyone to submit pull requests and contribute. Just like Bitcoin, the philosophy is the same—everything is public and transparent, out in the open for anyone to verify.

Genuine

DTV Electronics is part of Open Source Miners United (OSMU), founded in March 2023 as a hub for open-source Bitcoin mining projects designed to challenge closed-source industry practices. This means we contribute to the community by following strict guidelines. Our Bitaxe Supra is a world apart from the cheap knock-offs you might find on AliExpress or other websites. Plus, this version from DTV comes with a genuine warranty, so if it’s DOA or you run into any issues, we’ve got you covered.

Bitaxe Supra Unboxing

Now, let’s get to the most important part of the review. The Bitaxe Supra arrives double-boxed in a sleek DTV Electronics package, designed to highlight key details about the device.

The front of the box displays the Bitaxe Supra model name, the DTV Electronics brand, and the “Open Source Bitcoin Miner” subtitle, emphasizing its fully open-source nature. In the bottom left corner, there’s a notice about the included multi-region power supply, ensuring that no matter where you live, you’re ready to mine right out of the box—completely plug and play.

The back of the box features a product description and a component map, highlighting key internal parts. I really appreciate this design—it shows great attention to detail.

Sliding off the sleeve and opening the box, you’ll find a hard polystyrene shell protecting the contents. This level of care in packaging is impressive, especially in the open-source space, where items are often shipped with little to no protection. That’s definitely not the case here.

Lifting the protective panel reveals everything included in the box:

• Bitaxe Supra – Fully enclosed with a high-performance airflow system, super-silent fan, and branded logos.

• Power Supply – A 5A, 25W adapter for reliable operation.

• Five Plug Adapters – Compatible with outlets in the USA, UK, Europe, Asia, and Oceania.

• 12-Month Warranty – Peace of mind for any potential issues.

• User Guide Link – Access to a multi-language manual for easy setup and troubleshooting.

The power supply is solidly built, with a durable, thick cable that stays cool even after days of continuous use. The five included adapters make setup effortless—just twist clockwise to lock and counterclockwise to remove, eliminating the need to choose the right plug at checkout.

However, it’s worth noting that a USB Type-C cable is not included. That said, most people likely have one at home since it’s the global standard. The Bitaxe Supra uses USB-C for debugging, but interestingly, it cannot be powered via USB-C, despite the standard supporting well over 240W, while the Bitaxe only requires 25W.

It would be interesting to see if future Bitaxe models support PoE+ (802.3at), which delivers up to 30W (25.5W usable). This would allow both power and internet through a single cable when connected to a switch, eliminating the need for mandatory Wi-Fi. Who knows—maybe @Skot9000 has already considered it?

Bitaxe Supra Design

The Bitaxe Supra’s design deserves recognition for its thoughtful construction. Unlike many other Bitaxe models, the board is fully enclosed in a sleek polycarbonate shell, protecting it from accidental contact—whether from pets, kids, or everyday mishaps. But it’s not just about looks; the enclosure also optimizes airflow, drawing in cool air from the top and exhausting warm air from the sides.

During testing, with a room temperature of ~21°C, the Bitaxe Supra maintained a steady 45°C while hashing for days. That’s significantly cooler than industrial ASIC miners, which typically run between 70–90°C. This translates to longer lifespan, lower need of maintenance, and even potential for safe overclocking.

On one side (right or left, depending on your perspective), you’ll find two exhaust vent strips, a USB Type-C port for debugging, and the power input for connecting the adapter. Also worth noting are the sound-absorbing feet, which effectively dampen vibrations from the top-mounted fan. As a result, the Bitaxe Supra produces only a faint buzz, audible only from a few centimeters away.

On the opposite side, there are two more vents that release mildly warm air, similar to the other side. You’ll also find a small opening housing two buttons—one for flashing the OS and the other for resetting the device. While you’ll probably never need to use them, it’s nice that they’re accessible without needing a screwdriver.

This is the back of the Supra, featuring the classic DTV Electronics branding along with a bold ₿ logo. This side also allows you to stand the miner upright, a handy option if you prefer not to lay it flat. This saves desk space without needing a stand—something not possible with other Bitaxe models. However, keep in mind that in an upright position, there’s less vibration damping, so you might notice slightly more noise compared to when it rests on its shock-absorbing feet.

On the bottom, you’ll find more exhaust vents, the version number, ROHS and CE certifications, recycling symbol, website URL, logo, and the official Bitaxe seal of approval.

The stair-like front slopes down from the fan to the OLED display, featuring two main stickers—one representing the Bitaxe project and the other for OSMU (Open Source Miners United).

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Bitaxe Supra First Set Up

Before connecting the Bitaxe to the power adapter and then to your wall outlet, it’s a good idea that you have the following things lying around:

• Internet. You’ll need a working internet connection, preferably fiber or ADSL, though Starlink and other satellite options should work fine too. The Bitaxe Supra doesn’t require high-speed internet, but it does need a 2.4GHz Wi-Fi connection. Most routers support 2.4GHz, but if yours doesn’t, check your router’s admin panel to enable it. Make sure your 2.4GHz SSID is separate from the 5GHz network, as the Bitaxe does not support 5GHz—it connects just like most IoT devices.
• Strong Wireless Coverage. Wi-Fi can be tricky—one or two walls might weaken the signal (not just with the Bitaxe, but with every device), causing connection drops between your Bitaxe and the mining pool. If your router is more than two walls away, consider moving the Bitaxe closer or using a Wi-Fi mesh system or repeater to boost coverage in your home.
• Bitcoin Wallet. You’ll need a Bitcoin address to connect to the pool, and it must be one you control, because there it’s where you’ll receive the reward in BTC for your hashing. If your pool supports BOLT12 Lightning offers, using Coinos is a great option. Since a Bitaxe earns small amounts daily with pool mining, reaching the payout threshold for on-chain payments can take years. Most pools offer Lightning payouts, letting you receive sats daily instead of waiting for an on-chain withdrawal. If you plan to do lottery/solo mining instead, you don’t need Lightning but just a Bitcoin on-chain address.

After you’ve sorted out all these things, you can proceed to connect your Bitaxe Supra to the power.

Every device undergoes thorough testing at DTV before shipping to ensure it arrives in working condition. So, when you plug it in, the most likely outcome is that the fan starts spinning, the display turns on, and you see something like:

Connecting to SSID: CPE

Configuration SSID: Bitaxe_BDA9

In this case, Bitaxe_BDA9 is the device’s Wi-Fi network that you’ll need to connect to in order to set it up. Once connected, you can link the Bitaxe to your own network (with internet access) and input your pool information—only then will the device start hashing properly.

You can use a laptop, phone, or any other device with Wi-Fi to do this.

Scan for available networks on your device, and when you find one called Bitaxe_XXXX, connect to it. After a few seconds, a captive portal (a page you need to interact with before using a public or guest Wi-Fi network) will automatically appear.

How To Start Mining With The Bitaxe Supra

To start mining with the Bitaxe Supra, first you need to connect the Bitaxe to your home network and enter the pool details. Once you’ve saved the settings and restarted the device, all the information will be stored in its internal memory. This means that even if the power goes out, the miner will automatically resume mining as soon as power is restored. Let’s have a look at how to get started.

From the same AxeOS dashboard that opened moments ago, you can click on the sandwich button to open the sidebar, then update your network (1) and pool settings (2). Once you click save and restart (3), your Bitaxe will begin hashing at the next reboot, provided everything is set up correctly.

Make sure to enter your Wi-Fi name (SSID) exactly as it appears, including spaces, and type your full Wi-Fi password correctly. Keep in mind that all entries are case-sensitive.

In the pool settings (2), you’ll need to fill in the Stratum details:

• Stratum URL: This is the address of the mining pool. (Example: mine.ocean.xyz)

• Stratum Port: The port number for the pool. (Example: 3334)

• Stratum User: Your Bitcoin address followed by .workername

• Stratum Password: Usually just x

For added reliability, you can set up a fallback pool in case the main one goes down:

• Fallback Stratum URL: Another mining pool of your choice (or the same as the primary one).

• Fallback Stratum Port: The fallback pool’s port number.

• Fallback Stratum User: Your Bitcoin address followed by .workername (same as primary or different if needed).

• Fallback Stratum Password: Usually just x.

Once everything is set, save the configuration and restart your Bitaxe. If everything was entered correctly, it will start hashing (mining) at your selected pool after the reboot.

When the Bitaxe is hashing, the display should show the following information:

• Mining URL – The pool’s URL where your miner is connected.

• Bitaxe IP – The local IP address you can enter in your browser to access AxeOS settings.

• GH/s – The real-time hashing power.

• J/TH – The real-time efficiency, calculated as (Power Consumption in Watts) ÷ (Hash Rate in TH/s).

• Best – Displays the highest share difficulty found. The actual network difficulty is set by Bitcoin and adjusts based on total hashrate and block times.

• Temp – The ASIC chip temperature.

If all values look normal, your Bitaxe is hashing correctly.

Pool or Solo/Lottery Mining?

Choosing between solo (lottery) mining and pooled mining is entirely up to the user. As of now, thousands of Bitaxes are hashing on Public Pool, which many refer to as a “solo mining” pool.

However, there’s an important distinction to make. Simply connecting to Public-Pool.io with a Stratum address, Bitcoin address, and password isn’t truly solo mining. While most people call it solo mining because any block reward goes to a single miner’s address, real solo mining requires creating your own block template. Public Pool does allow this, but it requires running your own Bitcoin node and a Public Pool instance on your network by using a Bitcoin Node like Umbrel—something most users don’t do.

If you opt for pooled mining with OCEAN, for example, you’ll earn proportional to your hashrate. A single Bitaxe won’t make much, but those sats could appreciate over time. Plus, with Lightning payouts via BOLT12 offers, you can receive small daily payouts instead of waiting for a high on-chain withdrawal threshold. You can also create your own blocks with the DATUM protocol, which reduces pool fees. However, when a block is found, the reward is shared among all miners in the pool.

On the other hand, mining on CK Pool or Public Pool in “solo mode” means that if your Bitaxe finds a block (which, according to SoloChance.com, has odds of once every 25,348 years), you receive the entire block reward and subsidy, minus pool fees. It’s like playing the lottery every 10 minutes—exciting, but with slim chances. That said, a Bitaxe has found a block before using CK Pool. One miner with just 3TH of hashrate managed to solve the 290th solo block. So, there is always a chance.

You can track the performance/earnings of this exact Bitaxe Supra on OCEAN Pool, as I plan to keep this unit hashing there for at least a year for testing purposes.

Is It Worth Getting A Bitaxe?

Many people ask, “How much money will I make with a Bitaxe?” The answer: it depends.

If you mine solo and hit a block, you get the full Bitcoin reward. If you mine in a pool, you earn small but steady payouts. Running multiple Bitaxes increases earnings, but the real value of Bitaxe goes beyond just profit.

• Decentralizing Bitcoin mining – Traditional mining is controlled by a few large, closed-source companies. Bitaxe is open-source and low-cost, allowing anyone to participate, helping distribute hashrate worldwide without expensive mining farms.

• Energy-efficient & home-friendly – It consumes as little power as a LED light bulb, making it easy to run at home without worrying about electricity costs or excessive heat. It’s also simple to set up—just plug it in, connect to Wi-Fi, and start mining.

• No hidden fees or hashrate tax – Unlike some mining firmware that secretly takes a percentage of your hashrate, Bitaxe lets you keep 100% of what you mine.

• Great educational tool – While Bitcoin is digital and intangible, mining is its most physical aspect. Bitaxe is a hands-on way to learn about Bitcoin, making it great for self-education or teaching others, including kids.

• Supports Lightning payouts – Many pools allow Lightning withdrawals, so you can receive small daily Bitcoin payments instead of waiting months or years to hit an on-chain payout threshold.

Bitaxe is more than just a miner—it’s an open-source project that puts mining power back into the hands of individuals, making Bitcoin stronger, more decentralized, and accessible to everyone.

Running the numbers

If profitability is your main concern, I ran some numbers based on a $150 price point (set conservatively high—there’s a chance the Bitaxe Supra could become even more affordable in the future). Here’s what I found:

Category	Feature	Score
🔐 Profitability and Performance (41/50)
💰 Efficiency	17 J/TH (Total energy consumption divided by total hashrate)	8/10
💵 Economic Efficiency	250 $/TH (Price of the device divided by hashrate)	6/10
📈 Interest Ratio	425 J/TH² (Efficiency * Economic Efficiency)	5/5
💹 Price Weighted Interest Ratio	85 (Efficiency * Economic Efficiency * Price) / 1000	4/5
💡 Monthly Electric Bill	$0.54 (Considering energy cost = $0.15/kWh)	5/5
⛏️ Hashrate	0.6 TH/s	3/5
⚡ Power Consumption	~15W	5/5
💲 Price	~$150	5/5
🚀 Features (49/50)
✔️ Compatibility	Can mine all SHA-256 coins and connect to most pools	5/5
📶 Connectivity	Wi-Fi only (Optional Ethernet adapter)	4/5
📏 Form Factor	Compact, desk-friendly design	5/5
🔊 Noise	Virtually silent	5/5
🔄 Open Source	Fully open-source (Hardware & Software)	5/5
⛏️ Solo Mining	Supports solo mining pools	5/5
🌡️ Heat	Low heat output, efficient for small spaces	5/5
🤝 Support	DTV Electronics support via email & Telegram	5/5
📜 Warranty	12 months	5/5
⏳ 3yr Possession Cost	$200.16 (Monthly Electric Bill * 36 (Months) + Price of the device)	5/5
Total Score		88/100

The table up here is based on blockdyor’s evaluation method, which rates miners on a 0 to 100 scale using key performance metrics.

One of the strongest aspects of the Bitaxe Supra is its efficiency, which is outstanding at just 17 J/TH. However, its economic efficiency (cost per terahash) is quite high at $250/TH, making it less attractive from a pure cost perspective.

Interest Ratio (Efficiency × Economic Efficiency) → Lower is better

The Interest Ratio, indicates how “costly” a miner is in terms of power efficiency and upfront price. Lower values mean better efficiency per dollar spent.

• The Bitaxe Supra scores 425, which is quite good.

• For comparison, the Canaan Avalon Nano 3 (tested by blockdyor) performed much worse at 870.

Price Weighted Interest Ratio (Efficiency × Economic Efficiency × Price) / 1000 → Lower is better

As the title says, the Price Weighted Interest Ratio is a metric that helps compare Bitcoin miners by considering their efficiency, cost, and overall value. A lower value is better because it means the miner provides better energy and cost efficiency relative to its price.

• The Bitaxe Supra scores 85, which is solid.

• The Canaan Avalon Nano 3 scored 104.4, making the Supra a better value overall.

Lower values are better, meaning the miner offers good efficiency at a reasonable price.

3-Year Possession Cost (Monthly Electric Bill × 36 + Price) → Lower is better

• The Bitaxe Supra costs just $200.16 over 3 years.

This is way lower than:

• Canaan Avalon Nano 3: $570

• Antminer S9i: $5446

Overall, while the upfront cost per terahash is high, the efficiency, long-term cost, and decentralization benefits make the Bitaxe Supra an attractive option—especially for hobbyists and home miners.

Bitaxe Supra Alternatives

While the Bitaxe Project remains the only open-source Bitcoin mining initiative, its success has inspired larger companies to also introduce small home miners. Here’s how some of them compare:

• Bitaxe Gamma – The 4th generation and most efficient Bitaxe model, delivering 1.2 TH/s at 15 J/TH. It outperforms the Supra in efficiency but comes at a higher price and needs a more powerful power adapter.

• Canaan Avalon Nano 3S – The second-generation small miner from Canaan, capable of hashing 6 TH/s at 23.3 J/TH. A closed-source alternative with solid performance, much better than the Avalon Nano 3 but with a tag price much higher than the Bitaxe Supra and even of its predecessor.

• Braiins BMM 101 – Offers 1 TH/s at 35 J/TH, but is both less efficient and more expensive (and closed-source, too).

While these alternatives exist, Bitaxe remains unique due to its open-source design, efficiency, and affordability, making it the go-to choice for truly decentralizing Bitcoin mining.

Bitaxe Supra Pros & Cons

Pros	Cons
✅ Open source	❌ No Ethernet port
✅ Low power consumption	❌ No 5GHz Wi-Fi
✅ High efficiency	❌ AxeOS isn’t protected by a login password
✅ Easy setup
✅ Lightning payments
✅ 100% hashrate to pool
✅ Educational tool

Bottom Line

The Bitaxe Supra by DTV Electronics stands out as an excellent choice for Bitcoin mining enthusiasts. With its 12-month warranty, meticulous attention to detail, and thoughtful packaging, DTV proves itself to be one of the best Bitaxe manufacturers on the planet. The open-source hardware & software design, energy efficiency, and easy setup make it ideal for both beginners and experienced miners.

While it’s not 100% sure you will hit a solo block (it’s hard), the advantages of decentralizing Bitcoin’s hash rate and contributing to a more censorship-resistant network are clear. Whether you’re solo mining or pooling, the Bitaxe Supra delivers a cost-effective and educational experience in the world of Bitcoin mining.

👉 Buy the Bitaxe Supra on Amazon (USA, Mexico, EU, UK, Canada & More) 🇺🇸🇲🇽🇪🇺🇬🇧🇨🇦

👉 Buy the Bitaxe Supra with BTC on the DTV Electronics Store (Worldwide) 🌍

FAQ (Frequently Asked Questions)