• Triple RCA Inputs
• Bass, Treble, and Gain Control
• Motorized Pot for Smooth Adjustment
• Bypass Function for Pure Signal Path
• Op-Amp RollingSS3602, MUSES02, OPA2134PA

Fosi Audio P4 Mini HiFi Preamplifier

Equipped with triple inputs, tone control, and remote control for a convenient and customizable audio experience.

Another Masterpiece Driven by Voice of Customers

The P4 is a mini preamp self-developed by Fosi Audio based on extensive feedback from users worldwide after the launch of the V3 stereo amp.

• Input: RCA x3; Output: RCA, Pre-Out
• SNR≥ 110dB; THD+N≤ 0.003%
• Frequency Response: 20Hz-20kHz(±0.1dB)

High-Precision Motorized Analog Pot

Offer smooth volume adjustment while reducing noise and distortion for a purer soundscape.

Pre-Out Port

Expandable connection for powered subwoofers/powered speakers.

3-Level Gain Adjustment

Match different output levels from audio sources for improved sound quality.

Tone Control Bypass

Bypass the tone control circuit to enjoy the purest high-fidelity sound.

Enjoying a Convenient Audio Experience

Easily adjust the volume, switch sources, and control the tone without leaving your seat.

• Mini Control Hub: The P4 supports up to 3 RCA inputs, allowing easy connection to CD players, streamers, DACs, cassette decks, and turntables with built-in phono preamp. Switch between sources with a click for seamless audio control.
  
  
• Practical and User-Friendly: Equipped with volume control, bass and treble adjustment with bypass function, three-level gain control, and a remote. The preamplifier offers convenient audio setup and optimization, making every listening session effortless.
  
  
• Motorized Potentiometer: Featuring a high-precision motorized analog pot, the P4 delivers smooth volume adjustment, reduced noise, and minimal distortion for a purer and more refined sound experience.
  
  
• Compact and Solid: The P4 stereo preamp features a sleek, minimalist design that saves space and provides robust resistance to electromagnetic interference, ensuring reliable performance over time.
  
  
• Exceptional Performance: With a low noise floor, high signal-to-noise ratio, and extremely low distortion, the P4 pre-amplifier delivers pristine audio, ensuring accurate sound reproduction and enhancing the listening experience for audiophiles

• Fosi Audio P4 Mini Preamplifier x 1
• 12V/1.5A Power Supply x 1
• User’s Manual x 1