Fosi Audio ZP3 Balanced Preamp for Home Audio - 3-in-3-out Control Hub

In this review of the Fosi Audio ZP3, the bottom line is simple: this preamp is for listeners who want a compact, flexible control hub for a 2-channel or 2.1 home system and who value cleaner, more controllable analog routing. The ZP3 stands out because it combines balanced XLR and dual RCA inputs with RCA/XLR outputs plus a dedicated SUB-OUT, letting users route bass separately while keeping mids and highs clean. It is especially useful for setups that need input switching, basic tone shaping, and a remembered volume per input.

Key Features

• 3-in-3-out Control Hub: Lets the user connect up to three sources and switch them with the included remote for simple system management.
• Versatile Connectivity: RCA1, RCA2 and balanced XLR inputs plus RCA, XLR and SUB-OUT outputs enable easy integration with both consumer and pro-style gear.
• Balanced Signal Support: Balanced XLR in/out and RCA/XLR conversion improve noise rejection and compatibility with higher-end components.
• Audiophile-Grade Parts: ELNA capacitors, relays, NJR volume IC and gold-plated RCA jacks reduce distortion and help deliver clearer sound.
• Adjustable High-Pass Filter: Three-level HPF sends only mids and highs to main outputs while routing low frequencies to the SUB-OUT for tighter bass integration.
• Custom Sound Controls: Bass and treble adjustment with bypass plus L/R balance and volume memory let listeners tailor the sound and recall settings per input.

Who It's For

The ZP3 is aimed at audiophiles and hobbyist listeners who run a small dedicated stereo or 2.1 system and need flexible input switching, subwoofer integration, and cleaner balanced connections. It is a good fit for users who pair powered speakers or a power amplifier with multiple source devices and want a compact preamp that remembers volume per input.

Those who should look elsewhere include people who need advanced digital features like streaming, room correction, or multiroom networking, and buyers who are intolerant of any residual hiss - some users report an audible noise floor in certain setups, so sensitive systems may require careful matching.

Pros & Cons

Pros

• Flexible input and output options make integration with varied gear straightforward.
• High-quality components and balanced support contribute to lower distortion and clearer sound.
• HPF and SUB-OUT routing improve overall system balance for 2.1 setups.
• Remote control and volume memory offer convenient day-to-day usability.

Cons

• Some users report a faint hissing noise in sensitive systems, so careful cable and gain staging is advised.
• It lacks digital networked features, so it is not a one-box solution for streaming or multiroom needs.

Specifications

Inputs	RCA1, RCA2, XLR
Outputs	RCA, XLR, SUB-OUT
High-Pass Filter	Three-level HPF for RCA/XLR outputs
Tone Controls	Bass and treble with bypass, L/R balance
Key Components	ELNA capacitors, relays, NJR NJU72315 volume IC
Extras	Remote control, gold-plated RCA jacks, volume memory per input

Our Verdict

The Fosi Audio ZP3 is a practical, value-oriented preamp for listeners who want flexible analog routing, balanced connectivity and bass/sub integration without a big footprint. It delivers useful controls and high-quality parts for clearer sound in many two-channel and 2.1 systems, though extremely noise-sensitive setups should test for hiss. For the price and versatility, it is a solid buy for DIY and modest audiophile systems.

Frequently Asked Questions

Does the ZP3 support balanced connections?
Yes. The unit includes balanced XLR inputs and outputs and can perform RCA to XLR conversion for cleaner signal paths.

Can I send bass only to a subwoofer?
Yes. The three-level HPF filters low frequencies from the main outputs while routing bass to the dedicated SUB-OUT for 2.1 configurations.

Will the unit remember my volume setting?
Yes. The ZP3 stores volume levels for each input, but the manufacturer recommends reducing volume before first use of a new input to avoid high default levels.