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The Fosi Audio ZA3 is a compact Class-D amplifier built on the TI TPA3255 chip. It runs about 155W per channel in stereo or 235W as a mono block, so you can start with one and add a second for more power. Balanced XLR inputs, a 12V trigger and swappable op-amps set it apart from budget mini amps. It suits desktop and bookshelf setups and small home theaters; reviewers rate its clean power and value but note the bare-bones feature set and heat under load.
In stockSold by Electronic ExpressReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Owners and reviewers treat the ZA3 as a strong value in budget Class-D amplification. They praise its clean power, balanced inputs and quiet background, and many use a pair as mono blocks. Common complaints are heat, the need for a beefy power supply and the lack of features beyond amplification.
The Fosi Audio ZA3 is a mini two-channel stereo amplifier built around the TPA3255 Class-D amp chip. It has two modes: stereo mode delivers up to 155W, and mono mode delivers up to 235W. It can be used with passive speakers, a subwoofer, a desktop setup or a home theater.
It has a balanced input and a trigger input. The balanced input helps minimize interference, and the trigger input helps sync it with other devices. Components include Japanese NCC capacitors. The design improves heat dissipation and supports op-amp rolling, so the sound can be customized.
It works with bookshelf, tower and floorstanding speakers.
