Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer

Name: Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer
Brand: Fosi Audio
SKU: awhd-us-b07942m4mc
Price: 47.02 USD
Availability: InStock

Brand: Fosi Audio

Condition: Used - Very Good

$47⁰²

$59⁹⁹

-22% Save $12⁹⁷

Updated: Yesterday

Buy at Amazon.com

Description

• High-Performance Mono Amplifier:The Fosi Audio M04 is a mono amplifier designed for driving passive subwoofers or speakers. It features the Texas Instruments TPA3116 chip and NE5532 op-amp, providing an output power of 100 watts for a 2-ohm subwoofer or speaker.

• Enhanced Bass Response:The M04 SUB amp is designed to improve the bass response of passive subwoofers. It features a selector switch that allows the user to switch between subwoofer bass amplifier and full-frequency mono amplifier modes.

• Compact and Robust Design:This mini amp has a small and robust design with a built-in low pass filter for subwoofers and a sub frequency control, making it practical and powerful. It uses highly efficient Class D technology that remains cool under demanding loads and doesn't take up much space.

• Superior Sound Quality:The home subwoofer amplifier can produce a deep, crisp, and clean low-frequency sound effect, making it an excellent addition to dedicated home audio receivers & amplifiers. It has been designed to enhance the sound and performance of your audio system at an affordable price.

• Complete Package:What You Get: M04 subwoofer amp x1, 19V/4.74A power supply x1, user manual x1.

Fosi Audio M04 is a subwoofer amplifier mono amp driving passive subwoofer or passive speakers. M04 adopts Texas Instruments TPA3116 chip, NE5532 op-amp, which can provide 100watt output power for a 2-ohm subwoofer or speaker. M04 SUB amp improves the bass response of passive subs, designed with a selector to switch to a subwoofer bass amplifier or full frequency mono amplifier. Mini size and solid shell, built-in low pass filter for subwoofers with sub frequency control, it's practical and powerful. Highly efficient Class D technology runs cool under demanding loads and doesn't take up a lot of space. This home Hi-Fi amplifier can get a deep, crisp, clean low-frequency sound effect in dedicated home theater, enhanced sound and performance to your system at an affordable price.

Buy at Amazon.com

Sold by

Amazon Warehouse

Verified Retailer

Official Amazon outlet for open-box & returned items

Backed by Amazon's A-to-Z Guarantee
30-day return policy
Ships from Amazon fulfillment centers
Price verified on Amazon

Product Details

SKU:: awhd-us-b07942m4mc
Model:: M04
Country:: US
ASIN:: B07942M4MC

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $13 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Fosi Audio products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.