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Overview

Fosi Audio P4 Mini Preamp w/ Remote Control

Optionality

Features three input options, bass and treble adjustment, and a remote control for flexible and user-friendly audio customization.

Another Masterpiece Driven by Voice of Customers

The P4 is a compact preamp developed in-house by Fosi Audio, created in response to extensive user feedback following the release of the V3 stereo amplifier.

The Mini Control Hub for Your Home Audio System

Easily Connect up to three audio sources, with one-touch input switched for ultimate audio freedom.

Perfectly Paired with the V3 Amp

Its cohesive design enhances both the visual appeal and sonic performance of your audio system.

All-Aluminum Alloy CNC Construction

Compact and refined with a metallic finish, offering a sleek look and improved resistance to electromagnetic interference.

3-Level Gain Adjustment

Adjusts to varying output levels from audio sources, enhancing overall sound balance.

Tone Control Bypass

Bypassing the tone control circuit allows for the purest, unaltered high-fidelity audio playback.

Adjust Bass and Treble at Ease

Customize your sound signature to create a listening experience that suits your personal preferences.


The P4 is not a phono preamp. When connecting a turntable, please ensure it has a built-in phono preamp, or connect an external phono preamp before connecting the P4.

Enjoy a convenient Audio Experience

Conveniently control volume, switch inputs, and fine-tune tone settings using the remote—no need to get up.

High-Precision Motorized Analog Pot

Provides precise, smooth volume control while minimizing noise and distortion for a cleaner, more accurate sound experience.

Swappable Op-Amp

Customize your sound with the P4’s swappable op-amp design for tailored audio performance.

Pre-Out Port

Provides expandable connectivity for powered subwoofers or powered speakers, allowing for flexible system upgrades.

Mini Control Hub
The P4 supports up to three RCA inputs, making it easy to connect CD players, streamers, DACs, cassette decks, or turntables with built-in phono preamps. Switching between audio sources is simple and seamless with a single click.

Practical and User-Friendly
Designed for convenience, it features volume control, bass and treble adjustments with a bypass option, three-stage gain control, and a remote. These tools offer quick audio optimization for a smooth and enjoyable listening experience.

Motorized Potentiometer
A high-precision motorized analog potentiometer enables smooth and accurate volume adjustments while minimizing noise and distortion, delivering a cleaner and more refined sound.

Compact and Solid
The P4 boasts a compact, minimalist design with a solid metal build that resists electromagnetic interference, ensuring dependable performance in a wide range of setups.

Exceptional Performance
With a low noise floor, high signal-to-noise ratio, and very low distortion, this stereo preamp ensures faithful sound reproduction, meeting the expectations of audiophiles seeking clarity and precision.

Specifications

  • Channel: 2.0
  • Input Mode: RCA*3
  • Output Mode: RCA, Pre-out
  • SNR: ≥ 110dB
  • Dynamic Range: ≥ 110dB
  • THD+N: ≤ 0.003%

  • Crosstalk: ≥ 105dB
  • Noise Floor: ≤ 9μV
  • Tone Adjustment Gain: ±12dB
  • Frequency Response: 20Hz-20kHz(±0.1dB)
  • Power Supply: DC 12V/1.5A

Specifications

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Q&A

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Reviews

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Manuals & Resources

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