The Bitmain APW12 1215 PSU is the powerhouse that drives some of the most efficient and profitable Antminer rigs in existence today. Known for its robust engineering, reliability, and precision power delivery, this Antminer power supply has become the industry standard for miners who demand long-term stability in their setups. Whether you are running a datacenter-scale deployment or a single space-heater style miner at home, the APW12 has proven itself as the trusted backbone for serious Bitcoin mining operations.

What sets this listing apart is that every unit is sold as Used – Refurbished. That means the PSU has been professionally inspected, cleaned, and tested to meet strict performance standards. It may show small cosmetic marks from previous use, but under the hood it functions like new. This careful refurbishment ensures that you receive a reliable, tested APW12 PSU refurbished at a fraction of the cost of a brand-new one. For miners, this represents the best mix of savings and guaranteed stability.

Two Configurations to Choose From

• Stock Version — Designed for 200–240 V AC input, this is the standard model used in industrial-scale mining farms and homes with access to 240 V outlets. It offers maximum power delivery up to 3600 W when paired with full-size Antminer models.
• Loki (110 V Compatible) — An exclusive Loki 110V compatible variant, created through precision modification. This version allows the PSU to run directly on North American residential 110–120 V outlets. Even more, it comes pre-fitted with three brand-new silent fans. These fans drastically reduce the noise profile compared to stock high-RPM fans, turning the unit into a silent mining PSU better suited for apartments, houses, or garage setups. Because these fans move air more quietly and with less static pressure, users must keep their total power draw under ~1440 W for safe, cool operation.

Why Silent Fans Matter

One of the biggest hurdles for home miners is noise. Standard Bitmain PSUs can sound like jet engines, making them impractical for everyday use outside of warehouses. With the Loki-modified silent mining PSU, the problem is solved. By installing three brand-new low-RPM fans, the APW12 becomes quiet enough for home mining environments where comfort matters. However, airflow is reduced compared to stock, so load management is crucial. Keeping your miner tuned around 1200–1400 W ensures the fans can keep temperatures stable without excessive strain.

Product Features

• Wide DC Range: Adjustable from 12V to 15V, giving flexibility for multiple Antminer generations.
• Massive Current: Up to 233 A on 220 V input, making it one of the most capable Antminer power supply units available.
• Stable Output: Less than 1% ripple and noise protects your ASIC chips from unnecessary stress.
• Advanced Protections: Safeguards against low voltage, over-current, overheating, and short circuits.
• Silent Cooling (Loki only): Outfitted with three new low-RPM fans to reduce dB levels, designed for residential and space-heater builds.

Technical Specifications

Loki 110 V Guidelines

The Loki 110V compatible version of the APW12 has been adapted to safely start up and operate on residential 120 V circuits. This modification enables home miners in North America to avoid the hassle of installing 240 V outlets. But there are important limitations to keep in mind:

• Respect the power ceiling: A 15 A / 120 V circuit should never run more than 1440 W continuously. We recommend keeping load at ~1200 W for maximum safety.
• Fan airflow: With three quiet fans instead of two high-RPM fans, airflow is lower. Exceeding the 1440 W mark could overheat the PSU.
• Hashboard tuning: Use firmware power limits, lower hash frequencies, or remove hashboards to stay within a safe envelope.

Best Use Cases

• Space-heater mining rigs where quiet operation and 110 V compatibility are key.
• Apartment or home setups without 240 V circuits.
• Lab environments where testing ASICs requires lower power draw and less noise.

Condition

Used – Refurbished: Every unit has been inspected, tested, and fitted with replacement parts as necessary. Loki versions include three brand-new silent fans. Cosmetic wear may be visible, but performance is guaranteed. Perfect for miners seeking a balance between affordability and reliability in an APW12 PSU refurbished.