IceRiver KS0 Ultra (400Gh)

400 GH/s KHeavyHash at 100W and 0.25 J/GH (250 J/TH) efficiency. ±10 percent hashrate and ±10 percent power tolerance. Released May 5, 2024. The peak of IceRiver's home tier KS0 desktop platform. Mines Kaspa (KAS) primary and Sedra (SDR) as a secondary KHeavyHash chain.

10-35 dB, near silent operation. MM's spec sheet lists 75 dB which is factually wrong; MM's own body copy correctly flags this as suspicious. Every distributor worldwide (BT-Miners, Asic Marketplace, CryptoMinerBros, Zeus Mining) confirms near silent operation. BT-Miners describes it as "roughly equivalent to a quiet library." 10 dB is essentially imperceptible. 35 dB is quieter than a soft whisper. Suitable for any residential environment including bedrooms, home offices, and living spaces.

100-240V AC universal wall input through the included power adapter. Plugs into any standard wall outlet worldwide. The KS0 Ultra does NOT require 19-20V DC wall input as MM's spec sheet suggests — that 19-20V DC is the internal voltage that the power adapter delivers to the miner's PCB after converting wall AC. Buyers in the US (120V), Europe (230V), UAE (230V), Australia (240V), and everywhere else plug the KS0 Ultra into their standard outlet without voltage concerns.

No, not at standard electricity rates as of April 2026. MM's own calculator at $0.08 per kWh shows -$0.11 daily loss ($0.08 revenue minus $0.19 electricity). At $0.045 per kWh industrial rate: -$0.03 daily (per LeedMiner). At $0.04 per kWh: approximately break even. At $0.03 per kWh: approximately +$0.02 daily profit. Even under the cheapest realistic electricity scenarios, profit margins are minimal. The KS0 Ultra operates at break even to slight negative margin at any typical electricity rate. This is a speculative KAS accumulation or educational device, not a daily profit miner.

Three legitimate reasons. First: learning ASIC mining fundamentals at $199 entry cost is much cheaper than learning on $3,000+ industrial hardware. The KS0 Ultra teaches pool configuration, wallet management, firmware operation, hashrate monitoring, and troubleshooting in a low stakes environment. Second: speculative Kaspa accumulation during low price periods. If you believe KAS will appreciate significantly in the future, the KS0 Ultra accumulates approximately 1.5-2 KAS per day (550-730 annually). At future $1-$5 per KAS scenarios, this accumulated stack could be worth $550-$3,650 from one unit. Third: hobby or gift device. Compact, silent, low power — practical for crypto enthusiasts who value hardware ownership without industrial commitment.

Kaspa (KAS) is a proof of work cryptocurrency using GHOSTDAG protocol for faster block times (1 block per second target) and higher throughput. KAS has been among the strongest performing alternative proof of work cryptocurrencies over the past two years. The thesis: accumulate KAS during low price periods through cheap mining hardware while network difficulty is accessible, speculate on future price appreciation. At 1.5-2 KAS daily production per KS0 Ultra unit, annual accumulation is 550-730 KAS. This is a long duration speculative position. KAS appreciation is not guaranteed. Current network hashrate is dominated by industrial miners (Bitmain KS5 Pro, IceRiver KS7) which keep block reward per home tier miner small.

KS0 original at 100 GH/s, 65W, released 2023 (IceRiver's first mass market Kaspa miner). KS0 PRO at 200 GH/s, 100W (doubled hashrate). KS0 Ultra at 400 GH/s, 100W (this product, quadrupled original hashrate at same power). The KS0 Ultra is the clear choice within the KS0 series: 4x the hashrate of the original at the same 100W power envelope, only marginally more power than the 65W original. Same compact form factor, same near silent operation, same residential friendly voltage across all three. The Ultra is the current peak of IceRiver's home desktop Kaspa platform.

IceRiver KS2 Lite (2 TH/s, 500W): five times the hashrate at five times the power draw. Still manageable for home electrical infrastructure but requires more attention to power circuit capacity. Above the KS2 tier, IceRiver transitions to industrial hardware: KS5L (12 TH/s), KS7 (30 TH/s), requiring 220V+ service and dedicated mining spaces. The jump from KS0 Ultra to KS2 Lite is a meaningful step up in power, hashrate, and physical footprint. The KS5L and above are industrial products requiring professional mining infrastructure.

Goldshell KA Box at 1.18 TH/s (higher hashrate, different form factor, different power draw). IceRiver KS0 Ultra at 400 GH/s, 100W, $199 (this product). The KA Box produces nearly 3x the hashrate of the KS0 Ultra but at different price point and power envelope. For home tier Kaspa mining with the lowest entry cost and smallest power draw, the KS0 Ultra at $199 and 100W is the leaner option. For higher hashrate home Kaspa mining, the KA Box is the step up. Both are home tier devices that operate at similar daily profit margins at current KAS conditions (break even to slight negative).

Sedra (SDR) is a secondary cryptocurrency using the KHeavyHash algorithm that the KS0 Ultra can mine as an alternative to Kaspa. Sedra has even lower adoption and smaller ecosystem than Kaspa. Most operators mine Kaspa as the primary KHeavyHash coin. Sedra is a diversification option for operators who want to mine and accumulate multiple KHeavyHash chains. Daily economics for Sedra mining are typically less favorable than Kaspa due to lower token price and smaller network.

200 x 194 x 74 mm at 2.5 kg. Approximately the size of a small desktop speaker or wireless router. Fits on any desk, shelf, or bookshelf without dedicated installation. Single hand placement. Ships with packaging at 290 x 300 x 150 mm.

The included power adapter converts 100-240V AC wall input to 19-20V DC internal voltage. Note: IceRiver's official product page states "PSU (Power Supply Unit) not included" for the KS0 Ultra in some retail contexts. Verify with MillionMiner whether the PSU is included in their shipping configuration or sold separately. MM's Box Contents listing states "PSU included," which appears to be MillionMiner's standard bundling.

Simple residential setup. Plug the power adapter into any 100-240V wall outlet. Connect Ethernet cable from KS0 Ultra to your router or switch. Find miner IP through IceRiver's companion app, router DHCP, or network IP scanner. Open IceRiver web interface in your browser. Configure Kaspa pool URL (examples: WoolyPooly, F2Pool, Kryptex, IceRiver's own pool). Configure your KAS wallet address. Verify hashrate stabilizes at approximately 400 GH/s within 5-10 minutes. Total setup approximately 15-30 minutes. Residential technical skills adequate; no specialized training required.

All major Kaspa mining pools. WoolyPooly, F2Pool, Kryptex, IceRiver's own pool, Herominers, 2Miners, and other Kaspa compatible pools. Standard Stratum protocol with KHeavyHash extensions. NiceHash supports KS0 Ultra for Bitcoin payout alternative to direct KAS mining.

0 to 35 degrees Celsius per IceRiver documentation (MM lists 5-35°C, slightly conservative). BT-Miners notes some units support up to 45°C. 10-90 percent humidity tolerance. The low power draw (100W) means minimal heat output; normal room temperature operation is well within specifications. Place in an environment with reasonable air circulation for optimal operation.

6-month IceRiver manufacturer warranty per BT-Miners. Standard industry warranty for home tier Kaspa hardware. Covers manufacturing defects and hardware failures under normal operating conditions. Warranty begins from shipping confirmation date. Tampering with hardware or using non-IceRiver power adapters may void warranty per standard IceRiver terms.

Approximately 1.5-2 KAS per day at current network conditions (April 2026). Daily production varies with network difficulty and KS0 Ultra's share of total network hashrate. Monthly production: approximately 45-60 KAS. Annual production: approximately 550-730 KAS. At current KAS price of approximately $0.02, annual KAS value is $11-$15. The $199 unit cost does not pay back through daily mining revenue at current prices. Profitability depends on future KAS price appreciation.

Yes. At 100W per unit, a standard 15 amp 120V residential circuit (1,800W capacity) supports up to 16 units. 16 KS0 Ultra units produce 6.4 TH/s aggregate, equivalent to approximately one industrial Kaspa miner at comparable total power. For home operators with available outlet capacity, multi unit deployment is feasible. Each unit connects independently via Ethernet. The compact form factor and near silent operation allow multiple units in the same residential space without acoustic or thermal concerns.

Buy if: you want to learn ASIC mining at low entry cost ($199), you have strong speculative conviction on long term Kaspa (KAS) price appreciation, you value the hobby or educational experience of owning actual mining hardware, or you want a quiet low power device for multi unit home fleet building. Do NOT buy if: you expect operational daily profit at current market conditions (the KS0 Ultra loses money at $0.08/kWh residential rates), you need liquid exit markets for immediate KAS liquidation (KAS exchange liquidity exists but trading is thin compared to Bitcoin), you are uncertain about Kaspa's long term value proposition, or you have access to industrial electricity and want the best Kaspa mining economics (upgrade to KS5L at 12 TH/s or higher for industrial Kaspa mining).

Within IceRiver Kaspa lineup: KS2 Lite (2 TH/s step up), KS5L (12 TH/s industrial), KS7 (30 TH/s industrial flagship). Competing Kaspa hardware: Goldshell KA Box (1.18 TH/s home tier), Bitmain KS5 (20 TH/s industrial), Bitmain KS7 (45 TH/s industrial). For cross algorithm home tier diversification: Bitaxe Touch (Bitcoin solo lottery, 1.6 TH/s), ElphaPex DG HOME 1 (Scrypt LTC/DOGE home), Goldshell XT Card (Tari/XTM, not Kaspa despite MM misattribution), Goldshell HS Box II (Handshake home tier). For entry hydro/air cooled Bitcoin mining: Bitdeer SealMiner A3 Air (260 TH/s industrial), Bitmain S21 PRO (234 TH/s industrial).