Compact Analog Preamp with Tone Control

The Fosi Audio P4 Mini Preamp is a versatile and ultra-compact analog preamplifier designed for desktop or hi-fi use. Despite its small footprint, it delivers clean, dynamic sound with precise tone shaping, making it perfect for enhancing the performance of power amps or active speakers.

Dedicated Treble, Bass, and Volume Control

Built-in treble and bass knobs allow fine-tuned tonal adjustments to suit your system and room acoustics. The separate volume knob gives you full control over output level, making the P4 ideal for tailoring your listening experience.

Simple Integration and Quality Components

The P4 features high-quality RCA input and output connections for seamless integration into existing setups. Its solid metal chassis helps reduce interference and ensures long-term durability in any system.

Features

• Mini hi-fi analog preamp with tone controls
• Treble and bass adjustment knobs for custom sound tuning
• Compact aluminum chassis with metal volume knob
• Gold-plated RCA inputs and outputs for clean signal transfer
• Ideal companion for power amplifiers, active speakers, or headphone amps

Specifications

• Model: P4
• Input: RCA stereo
• Output: RCA stereo
• Tone Control: Treble and Bass ±12dB
• Signal-to-Noise Ratio: ≥98 dB
• Frequency Response: 20Hz–20kHz (±1dB)
• Power Supply: DC 12V
• Dimensions (W×H×D): 100 × 33 × 95 mm
• Weight: 0.35 kg