Fosi Audio ZA3 vs WiiM Amp Detailed Comparison

Fosi Audio ZA3 vs WiiM Amp

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Fosi Audio ZA3

Power Amplifier | 180 watts RMS into 4-ohms

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WiiM Amp

Integrated Amplifier | 60 watts RMS into 8-ohms

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Fosi Audio ZA3

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WiiM Amp

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Fosi Audio ZA3

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WiiM Amp

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Fosi Audio ZA3 vs WiiM Amp Integrated Amplifier Comparison

In this review, we will be comparing two different types of amplifiers. Fosi Audio ZA3 is a Stereo Power Amplifier speaker whereas the Amp is a Streaming Integrated Amplifier speaker.

Let's have a brief look at the main features of Fosi Audio ZA3 and WiiM Amp first before getting into our more detailed comparison.

Key Specs	Fosi Audio ZA3	WiiM Amp
Power	180 watts x 2 channels into 4 ohms in stereo, or 235 watts into 4 ohms switched to mono. Fosi publishes no 8 ohm rating	60 watts x 2 channels into 8 ohms and 120 watts x 2 channels into 4 ohms
Amplifier class	Class D	Class D
Built-in DAC	No	Yes
Phono input	No	No
Headphone output	No	—
Bluetooth	No	Yes
Weight	1.78kg / 3.9lbs	1.85kg / 4.1lbs
Dimensions (H x W x D)	2" x 6-1/8" x 7-1/4" 50.8 x 154.9 x 183.9 mm	2.4375" x 7.5" x 8.625" 62.0mm x 191.0mm x 220.0mm

The sections below take each area in turn: power output, inputs and outputs, features and physical size.

**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Fosi Audio ZA3 over WiiM Amp

MSRP Price(*)	150USD vs 299USD	costs less (*prices may change depending on the seller, location and time)
Watts into 4-ohms	180 watts vs 120 watts	Delivers higher power into 4-ohms speakers
Signal to Noise Ratio	106 dB vs 98 dB	Higher ratings results in cleaner sound
Minimum Impedance	2 ohms vs 4 ohms	Compatible with 2-ohms speakers
Coaxial Digital Inputs	vs No	More options for connecting Digital sources
Base Surface Area	284.9cm²/ 44.2inch² vs 420.2cm²/ 65.1inch²	takes less space in your room
Height	50mm vs 62mm	Easier to fit in smaller spaces

Reasons to choose WiiM Amp over Fosi Audio ZA3

Built-in Room Correction	Yes vs No	Adjusts audio output to compensate for acoustic anomalies in a listening space
Full-color Display	Yes vs No	Displays Album and device Info
Handheld Remote	Yes vs No	Control the amplifier by the included RC
Total Harmonic Distortion (THD)	0.0025% vs 0.006%	Less Harmonic Distortion
Buil-in DAC	Yes vs No	Connect digital sources without an external DAC
Bluetooth	Yes vs No	Stream music via Bluetooth devices
USB Input	Yes vs	Connect Sources via USB

Inputs and Outputs

The input and output selections that are offered is an important factor when comparing two amplifiers. Here you can find how the I/O selections of the Fosi Audio ZA3 and WiiM Amp differs from each other.

Fosi Audio ZA3 Inputs

Total Number of Analog Inputs: 2
XLR Input Port

WiiM Amp Inputs

1 Optical Digital Input
USB Input:
- USB Type-A input for connecting an external drive loaded with music
HDMI ARC
Ethernet Port

Outputs

Subwoofer Output

Outputs

Sub Preamp Outputs
Subwoofer Output

WiiM Amp Back View (Click the image for the larger version)