Antminer S9 Bitcoin Miner - Braiins OS + Quiet Noctua NF-A14 Fans - Ru

For sale: Bitmain Antminer S9 Bitcoin miner – fully functional and upgraded for quiet, efficient home use. Running Braiins OS (custom firmware) with autotuning enabled – this squeezes out better efficiency and hash rate at lower power than stock firmware. You can easily set custom power limits (e.g., undervolt to 800-1000W for quieter/cooler operation while still getting solid hashing). Supports AsicBoost and advanced monitoring via the Braiins web interface. Big noise reduction upgrade: Replaced stock screaming fans with premium Noctua NF-A14 first-generation quiet fans. Dramatically quieter (often 45-60dB range depending on tuning) – perfect for garage, basement, or even living space without the jet-engine noise. Hashrate: Typically 13-14 TH/s (varies with exact variant and Braiins tuning) Power: ~1300-1400W stock, but tunable down significantly with Braiins for efficiency/quiet Condition: Used, reliable, well-maintained – powers on, hashes stably, no errors Includes: Original PSU (if bundling – confirm), cables, etc. (ask if needed) Ready to mine: Just point to your pool (Slush Pool, Braiins Pool, etc.) – great for hobby BTC mining, merged SHA-256 coins, learning, or as a winter space heater that earns a little crypto. These S9s arent big money-makers anymore with current difficulty and BTC price (expect small daily rewards minus electric costs unless power is cheap), but the Braiins + Noctua setup makes this one way more usable at home than a stock unit. Local pickup preferred in Charleston, WV area. Cash, Venmo, etc. Asking $150 (or best offer – check similar listings on eBay/FB Marketplace for comps; upgraded quiet ones often fetch a bit more than basic used S9s). Questions/offers welcome – no tire-kickers/lowballs please. Serious buyers only!