Pencil drawing of the Bitaxe Naja Duo 1201

Bitaxe miner Lottery miner Desktop In production

Bitaxe Naja Duo 1201

A newer two-chip Bitaxe that uses Bitmain's 3 nm BM1373, the chip believed to be in the Antminer S23. Solo Satoshi rates it at about 4.4 TH/s for roughly 42 W, the best efficiency of any Bitaxe so far. The design repository still calls it an untested prototype.

Best price $366

$83.18 per TH · New · In stock at Solo Satoshi

from price, range $366.00-$385.00 depending on PSU option

Reviews from Nostr ↓

Hashrate4.4 TH/s worst 250 GH/sbest 1.16 PH/s 169th best of 197 (the bar uses a log scale)
Power (stock)42 W lowest 11 Whighest 22 kW 183rd highest of 199 (the bar uses a log scale)
Efficiency9.5 J/TH worst 100 J/THbest 8.9 J/TH 4th best of 195
Earns per kWh$0.159 worst $0.010best $0.171 6th best of 195
Heat output143 BTU/h worst 38 BTU/hbest 75,067 BTU/h 183rd best of 199 (the bar uses a log scale)
Noise—
Price per TH$83.18 worst $539.96best $1.82 139th best of 156 (the bar uses a log scale)

Where to buy

Store Trustpilot Condition Availability Listed price In your currency Per TH Checked Link
Solo Satoshi Ships from United States from price, range $366.00-$385.00 depending on PSU option TrustScore 4.8 out of 5, 206 reviews New In stock $366 $366 $83.18 4 Nov 2026 Visit
TinyChipHub TinyChipHub "Remastered Edition" of the 1201 board (4.51 TH/s at about 49.5 W per the listing); GBP price shown to a UK visitor TrustScore 3.5 out of 5, 4 reviews New In stock £329 $438 $99.50 4 Nov 2026 Visit
Bitcoin Merch Ships from United States with power supply TrustScore 4.4 out of 5, 1,082 reviews New In stock $600 $600 $136.36 4 Nov 2026 Visit

Prices as listed on each store's page on the date shown, without shipping. Prices marked excl. tax leave out VAT or sales tax, and others may too. Per TH uses the hashrate of the unit each store sells. Converted at ECB rates of 11 Nov 2026. Trustpilot scores are for the store, not the device. Each store's name opens its page, with everything it sells and its reviews.

Heat, running cost and sats

Heat per day
—
Electricity per day
—
Mining earns per day*
—
Net cost per day
—
Net cost per kWh of heat
—
Solo: chance of a block per year
—
Earns per kWh, on 3-month averages
—
Payback
—

*What a pool would pay on average at today's difficulty, block reward and bitcoin price, before pool fees. Solo miners usually earn nothing, and very rarely a whole block. A plain electric heater turns the same electricity into the same heat, so the mining income is what makes the difference.

Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the hours you set. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out.

Specifications

BrandBitaxe
ModelNaja Duo 1201
SKUMNR-NAJADUO (Solo Satoshi)
TypeLottery miner · Home
Form factorDesktop
CoolingAir
Production statusIn production
Launch date—
Hashrate4.4 TH/s *
Power consumption (stock)42 W *
Mining efficiency9.5 J/TH *
ASIC chipBitmain BM1373 × 2 (named by the device's maker)
Heat output143 BTU/h
Input voltage12 V DC (XT30)
Frequency—
Net dimensions (W × D × H)—
Net weight—
Noise—
Operating temperature—
Area heatedLess than 1 m² (our estimate)
Colours—
Company based in—
Made in—

* Not confirmed by the maker's own documents yet.

Heat modes

ModeHashratePowerHeat
Overclocked (Solo Satoshi test, 600 MHz)8 TH/s92 W314 BTU/h

Features

  • Two Bitmain BM1373 ASICs (S23 generation)
  • Open-source hardware (CERN-OHL-S) and ESP-Miner / AxeOS firmware
  • 1.9-inch colour LCD
  • 12 V DC input via XT30
  • Per-chip temperature sensing
  • 92 mm slim PWM fan with low-profile heat-pipe cooler
  • 2.4 GHz Wi-Fi

Reviews

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Sources and data notes

Not yet confirmed from the maker's own documents: launch date; where the company is based; where it's made; hashrate; power; efficiency; dimensions; weight; operating temperature.

Spotted a mistake? Let us know.