Meet SW10 | Our First Subwoofer
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier
Fosi Audio ZP3 Preamplifier

Fosi Audio ZP3 Preamplifier

$199.99

Features
  • Triple Source Inputs: 3 In / 3 Out
  • HPF Adjustment
  • 12V Trigger In/Out
  • Perfect combination with ZD3 and ZA3
Shipping to
Shipping to: US
Review Your Selections
Need help?

Pairs well with

Fast, Free Shipping!

24 Months Warranty

30-Day Money-Back Guarantee

Lifetime Customer Support

Review Videos

Finally Getting What We Asked For!

Matt Coykendall

The "Almost Great" Fosi ZP3 Sub-Out Pre-Amp

Z Reviews

The Pre-Amp We All NEED! ZP3 Here!

UTILITARIAN TV

The Greatest Shift in Hifi is Happening! Good or Bad?

cheapaudioman

FOSI AUDIO ZP3 Balanced Preamplifier

Fred & Sound

Finally Getting What We Asked For!

Matt Coykendall

The "Almost Great" Fosi ZP3 Sub-Out Pre-Amp

Z Reviews

The Pre-Amp We All NEED! ZP3 Here!

UTILITARIAN TV

The Greatest Shift in Hifi is Happening! Good or Bad?

cheapaudioman

FOSI AUDIO ZP3 Balanced Preamplifier

Fred & Sound
Cargar video:

Built on User Voices

The ZP3 Balanced Preamp was developed in response to user demand for a preamplifier with multiple audio inputs.

  • Input: RCA x2 and XLR
  • Output: RCA, XLR, SUB
  • SNR≥ 115dB; SINAD≥113dB; Crosstalk≤ -130dB
  • Input Voltage Range: AC 110-240V

ZP3 & P4 Comparison

Thinking about a new preamp? Let’s line up P4 and ZP3, and see what makes each one special.

Product details

Description
  • Home Audio Control Hub: Features 3-in-3-out options for connecting up to three audio sources. Includes a remote control for one-touch input switching and volume adjustment—making it easy to manage your home audio system with freedom

  • Versatile Connectivity: Equipped with RCA1/RCA2/XLR inputs and RCA/XLR/Sub-Out outputs, the ZP3 integrates multiple devices with ease. Supports balanced XLR in/out for cleaner sound, plus RCA/XLR signal conversion for maximum compatibility
  • Audiophile-Grade Components: Built with premium parts including ELNA capacitors,  NJR NJU72315 volume IC, and gold-plated RCA jacks. These components reduce noise and distortion, delivering exceptional clarity and high-fidelity performance

  • Adjustable High-Pass Filter: Three-level HPF settings filter low-frequency signals from the RCA/XLR outputs, sending only mids and highs to main speakers while routing bass through the SUB-OUT—enhancing clarity, detail, and overall sound balance

  • Flexible Sound Customization: Includes bass/treble control with bypass function, and L/R balance knobs for personalized adjustment. Volume memory remembers settings for each input source—giving you a smarter, more convenient audio experience tailored to your taste
Specifications

Channel: 2.0
Input: RCA x2, XLR
Output: RCA, XLR, SUB
Bass and Treble Control Range: Treble: ±6dB，Bass: ±12dB
Frequency Response
XLR/RCA:
20Hz-20kHz (±0.2dB)
80Hz-20kHz (±0.2dB)
120Hz-20kHz (±0.2dB)
SUB: 20Hz-200Hz (±0.2dB)
Input Voltage Range: AC 110-240V

Balanced Output (XLR)
SNR: ≥ 112 dB
Dynamic Range: ≥ 112 dB
THD+N: ≤ 0.0007%
Noise Floor: ≤ 6μV

Single-Ended Output (RCA)
SNR: ≥ 115 dB
Dynamic Range: ≥ 115 dB
THD+N: ≤ 0.0008%
Noise Floor: ≤ 4μV

What‘s in the box？
  • Fosi Audio ZP3 x 1
  • IR Remote Control x 1
  • AC 110-240V Power Cord x 1
  • 12V Trigger Cable x 1
  • User Manual x 1

Which Product is right for you?

Compare products to find the best one for your needs.

From $199.99

Fosi Audio ZP3 Preamplifier

Learn more
Type
Preamp
Input
RCA x2, XLR
Output
RCA, XLR, Sub-Out
Bass & Treble Control
Yes
THD+N
≤ 0.0007%
SNR
≥ 115 dB
From $99.99

Fosi Audio P4 Mini Preamplifier

Learn more
Type
Preamp
Input
RCA x3
Output
RCA, Pre-Out
Bass & Treble Control
Yes
THD+N
≤ 0.003%
SNR
≥110dB
From $79.99

Fosi Audio P3 Tube Preamplifier

Learn more
Type
Preamp+Headphone Amp
Input
Bluetooth, RCA
Output
RCA, 3.5mm Headphone Jack, AUX
Bass & Treble Control
Yes
THD+N
≤0.02%
SNR
≥103dB
From $199.99

Fosi Audio ZP3 Preamplifier

Learn more
Type
Preamp
Input
RCA x2, XLR
Output
RCA, XLR, Sub-Out
Bass & Treble Control
Yes
THD+N
≤ 0.0007%
SNR
≥ 115 dB
From $99.99

Fosi Audio P4 Mini Preamplifier

Learn more
Type
Preamp
Input
RCA x3
Output
RCA, Pre-Out
Bass & Treble Control
Yes
THD+N
≤ 0.003%
SNR
≥110dB
From $79.99

Fosi Audio P3 Tube Preamplifier

Learn more
Type
Preamp+Headphone Amp
Input
Bluetooth, RCA
Output
RCA, 3.5mm Headphone Jack, AUX
Bass & Treble Control
Yes
THD+N
≤0.02%
SNR
≥103dB

FAQs

Please read our FAQs page to find out more.

One channel is louder than the other?

Make sure the balance knob is centered on the ZP3 and the input signal is balanced between the two channels.

What is the function of the Bypass switch?

It toggles tone control on/off. Slide up to bypass bass/treble; slide down to enable them. It doesn’t affect volume.

Can I switch between RCA and XLR output?

No. RCA and XLR outputs work at the same time and cannot be switched independently.

What is the function of the HPF adjustment?

It filters low frequencies, letting highs pass. The ZP3 offers 3 cutoff settings for different output frequency ranges.

Why is there no bass or the bass sounds weak?

Check if the HPF switch on the bottom is set to 20Hz–20kHz to avoid filtering out low frequencies. Also check if the bass knob is set too low.

Customer Reviews

Based on 36 reviews
75%
(27)
25%
(9)
0%
(0)
0%
(0)
0%
(0)
84.0
80.8
M
Michael K.
Fosi Audio ZP3 - Simply The Best

For me, the Fosi Audio ZP3 delivers precise imaging and musicality. The built in high pass filter (HPF) is a critical feature when a subwoofer is used as it redefines musicality completely. This preamplifier will be with me for a long time.

A
Anthony
Features you can’t find anywhere else

Nothing I can find within a relative price range can do what the ZP3 does as a pre-amp.
1. Balanced device
2. XLR inputs
3. High Pass Filter
4. Sub out

I have already bought two of them, and I will most likely purchase another for my next audio setup.
Its ability to seamlessly integrate a subwoofer into your system is absolutely amazing for the price point.

And also it sounds good too :)

The complaints about the volume knob and settings are valid. I luckily don’t have to deal with that because I pretty much always start and end my audio sessions with the volume all the way down.

That would be the only complaint I would have, instead of a volume knob that spins indefinitely, have it more like the ZA3, with an easily identifiable and visually accessible start and end.

M
Manuel Sagarbarria
Get it

5 stars

C
Cesar

ES mi primer equipo separado. Lo tengo acoplado a dos amplificadores V3 mono y un DAC ZD3. Me gusta el rendimiento, lo tengo conectados por XLR. Lo único que podría pedirse es algún indicador lumínico de volumen. El control puede controlar otros equipos de la marca.

User picture User picture User picture
B
Bill Skelton
Lots of options!

This is my first discrete pre-amp and there's a lot to take in here. I particularly like being able to use the balanced XLR cable option to connect my pair of ZA3 amps in mono mode and continuing the balanced set up to connect the preamp to my Eversolo DMP-A6 streamer. Still working through all the various options and really enjoying the Fosi gear, not to mention the absolutely outstanding customer service. Super fast responses to my questions. Couldn't be better!

123

Free Shipping

Delivery Available for Every Order

Money-Back Guarantee

30 Days Free Return

Customer Support

Provide you with all-round services

24 Months Warranty

Quality Assurance Guarantee
© 2025 Fosi Audio. Tecnología de Shopify
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Venmo
  • Visa