Goldshell KA Box (1.18TH)

1.18 TH/s kHeavyHash at 400W and 339 J/TH efficiency. ±5 percent hashrate tolerance produces real world output between approximately 1.12 and 1.24 TH/s. This is Goldshell's first dedicated Kaspa miner in their silent Box series form factor, released March 2024. For scale context, the Bitmain KS7 at 45 TH/s produces roughly 38 times more Kaspa hashrate at industrial noise and voltage from dedicated mining space.

35 dB from two cooling fans. For reference, 30 dB is a quiet whisper and 40 dB is a quiet library. The KA Box operates below the threshold where most people consciously register background noise. You can run it in a bedroom while sleeping, on a home office desk during calls, or in a shared living space without anyone noticing it is there. The KA Box Pro (1.6 TH/s) jumps to 75 dB, which is vacuum cleaner loud. That 40 dB gap is the difference between invisible and intolerable.

At April 2026 conditions, no. MillionMiner's calculator shows -$0.53 daily at $0.08 per kWh. Daily revenue approximately $0.24. At $0.04 per kWh hosted industrial rates, still marginally negative at -$0.14 daily. The massive growth in Kaspa network hashrate from Bitmain and IceRiver ASIC deployment has compressed per unit revenue far below 2024 levels. Mining KAS on the KA Box is a speculative accumulation strategy: accept a small daily electricity cost as the price of accumulating KAS tokens for potential future appreciation, not a profitable daily operation.

Kaspa is a proof of work layer 1 blockchain using a GHOSTDAG (blockDAG) consensus that allows parallel block creation at 1 second block times, among the fastest in any PoW network. Bitcoin inspired monetary policy: halving emission schedule with capped supply at 28.7 billion KAS. The mining thesis rests on Kaspa's community growth, potential major exchange listings (not yet on Coinbase or Binance spot as of early 2026), and the positioning as the "fastest pure proof of work" chain. Mining accumulates KAS tokens at electricity cost before potential catalysts increase token value.

KA Box at 1.18 TH/s, 400W, 35 dB (this product). KA Box Pro at 1.6 TH/s, 600W, 75 dB. The Pro delivers approximately 35 percent more hashrate at 50 percent more power draw and 40 dB more noise. The acoustic difference is the deciding factor: 35 dB is whisper quiet in any room, 75 dB is industrial noise requiring a dedicated space. Bitcoin Merch lists the original KA Box as discontinued with the Pro as replacement, but for operators whose primary criterion is silence, the original KA Box remains the only option in Goldshell's Kaspa lineup.

Bitmain KS7 at 45 TH/s (75 dB, 220V+, industrial). IceRiver KS5L at 12 TH/s (industrial). IceRiver KS7 at 30 TH/s (industrial). All deliver 10 to 38 times more hashrate per unit at industrial noise, dedicated power, and facility infrastructure requirements. The KA Box does not compete with these on economics. It occupies a different category: silent, standard outlet, zero infrastructure mining for operators who cannot or will not deploy industrial hardware. The hashrate gap is enormous but the deployment accessibility gap is equally enormous.

Universal 100 to 240V AC at 400W. At 110V draws approximately 3.6 amps. At 220V approximately 1.8 amps. Fits any standard residential outlet worldwide. Monthly electricity cost at $0.08 per kWh: approximately $23. At $0.07 per kWh: approximately $20. Running the KA Box costs less per month than most streaming service subscriptions. No dedicated circuits, no voltage transformers, no infrastructure planning.

MillionMiner lists PSU in the box contents. However, some distributors (Amazon, Bitmars) sell the KA Box without PSU as standard configuration, requiring a separate external PSU purchase. Verify PSU inclusion directly with MillionMiner before ordering. If PSU is not included, a standard PC power supply rated for 400W+ with the correct connector works. The KA Box uses a standard power input connector compatible with widely available PSU units.

178 x 150 x 84 mm at approximately 2 kg. Roughly the size and weight of a hardcover book. Smaller than most home routers and cable modems. Sits on any desk, shelf, windowsill, or countertop alongside consumer electronics without visual disruption. The Goldshell Box series form factor is designed to blend into home environments rather than look like mining equipment.

Goldshell specifies 0 to 35 degrees Celsius at 0 to 65 percent humidity per most distributor documentation. MM lists 5 to 45 degrees Celsius which does not match Goldshell's published specification. The 35 degree maximum ceiling is tighter than typical ASICs. In warm climates or poorly ventilated spaces, keep the KA Box in air conditioned environments during hot months. The 400W heat output (approximately 1,365 BTU per hour) is modest but can warm a small enclosed space, worsening the thermal situation in already hot environments.

Kaspa (KAS) is the primary and by far the largest kHeavyHash network. The KA Box can also sell hashrate through NiceHash's kHeavyHash marketplace, receiving Bitcoin in exchange for contributed hashrate. NiceHash may offer marginally better returns than direct KAS mining during certain market conditions. No other major kHeavyHash networks currently attract meaningful mining participation.

Three step setup. Connect PSU to KA Box and plug into any 100 to 240V outlet. Connect Ethernet cable to router (or configure WiFi through Goldshell mobile app if supported on the specific firmware version). Find miner IP through Goldshell IP reporter tool, router DHCP, or network scanner. Open web interface, configure kHeavyHash pool URL and KAS wallet address. Goldshell also supports mobile app configuration for iOS and Android. Total setup approximately 10 minutes.

MM body copy references WiFi through the Goldshell mobile app. Bitcoin Merch and ASIC Marketplace spec sheets list Ethernet only. Goldshell's Box series firmware has historically included WiFi capability on some models. Verify WiFi support with MillionMiner for the specific batch. For most stable mining performance, wired Ethernet remains preferred regardless of WiFi availability.

Major Kaspa kHeavyHash mining pools accept KA Box hashrate including F2Pool, DxPool, Acc Pool, Kaspa Pool, and PoolFlare. NiceHash kHeavyHash marketplace provides an alternative where you sell hashrate for Bitcoin rather than mining KAS directly. Pool fees typically 1 to 3 percent. At 1.18 TH/s against current Kaspa network hashrate (well above 1 EH/s), solo mining produces extremely infrequent block finds. Pool mining is the only practical approach for revenue consistency.

Bitcoin Merch lists the KA Box as discontinued with the KA Box Pro (1.6 TH/s) as the replacement. Goldshell's product focus has shifted to the Pro and other newer models. MillionMiner's listing shows "Temporarily Unavailable" which may reflect limited remaining inventory. The KA Box remains functional hardware; "discontinued" means Goldshell stopped manufacturing new units, not that existing units stop working. Availability depends on remaining distributor and secondary market inventory.

Yes. Each unit operates independently with its own power and Ethernet connection. A standard 15 amp 110V circuit (1,800W capacity) supports four KA Box units at 400W each (1,600W total). A standard 20 amp 110V circuit supports five units. Configure all units to the same pool and wallet for consolidated revenue. Aggregate hashrate scales linearly: four units produce approximately 4.72 TH/s, still substantially below a single industrial KS5 (20 TH/s) but at whisper quiet collective noise.

Minimal. Quarterly dust wipe of the compact chassis and two fan grilles. Monitor hashrate through Goldshell web interface or mobile app for degradation. No coolant, no filters, no internal servicing. The 2 kg unit can be unplugged, wiped clean, and restarted in under a minute. Solid state hardware with only two small fans as moving parts. Released March 2024, units have established over two years of field reliability data.

MillionMiner accepts KA Box units for hosting, though hosting economics for 1.18 TH/s Kaspa miners generating approximately $0.24 daily revenue make the arrangement economically challenging. Hosting fees and electricity cost would likely exceed mining revenue at current conditions. Hosting makes more economic sense for industrial Kaspa hardware (Bitmain KS7, IceRiver KS5L) where daily revenue justifies facility costs.

The KA Box is not a profitable mining investment at April 2026 conditions. It loses money daily at any commercially realistic electricity rate. Buy the KA Box if: you want to accumulate Kaspa tokens at minimal daily cost ($0.67 to $0.77 per day in electricity) as a speculative bet on KAS price appreciation, you want a functional piece of Kaspa mining hardware for desk display or educational purposes, you live in a space where absolutely no noise above a whisper is acceptable and still want to mine, or you value Goldshell's Box series form factor and want to participate in kHeavyHash proof of work at the smallest viable scale. For profitable Kaspa mining, industrial hardware (Bitmain KS7 at 45 TH/s) at cheap electricity delivers fundamentally different economics.

Within Goldshell Kaspa lineup: KA Box Pro (1.6 TH/s, 75 dB) for more hashrate at industrial noise. Industrial Kaspa alternatives: Bitmain KS7 (45 TH/s, $3,999) for maximum kHeavyHash output, IceRiver KS5L (12 TH/s), IceRiver KS7 (30 TH/s). Other Goldshell Box series for cross algorithm diversification: KD Box II (5 TH/s Kadena), CK Box II (2.1 TH/s Nervos), AL Box II Pro (950 GH/s Alephium), Mini DOGE Pro (205 MH/s Scrypt). For Bitcoin mining as a more liquid alternative at home tier: Bitaxe Gamma 601 (1.2 TH/s SHA-256 solo lottery), NerdMiner NerdQaxe++ (4.8 TH/s). For Scrypt merged mining (LTC/DOGE) at quiet home tier: Fluminer L1 Pro (6 GH/s, 45 dB) or Fluminer L3 (9.5 GH/s, 45 dB).