Fosi Audio P4: Compact preamplifier with a wide range of capabilities

Fosi Audio P4 is an innovative compact preamplifier that offers extensive functionality. It features three stereo RCA inputs, a motorized volume control, tone adjustment, and a gain switch, making it an ideal choice for a variety of audio setups.

 

The motorized volume potentiometer ensures seamless adjustments while minimizing noise and distortion, thereby enhancing the sound stage.

The three-level gain switch enables you to modify the output signal based on the connected source.

For sound customization, there are controls available to adjust bass and treble frequencies within a range of ±12 dB. Additionally, if preferred, the tone control can be entirely turned off using the switch located on the rear panel, allowing for an unaltered sound experience.

 

 

An extra 3.5 mm output enables the connection of an active subwoofer or other components of the system.

The chassis is constructed from machined aluminum alloy, providing a sleek look while minimizing the effects of electromagnetic interference.

 

Fosi Audio P4 Specifications:

• Device type: preamplifier
• Channels: Stereo (2.0)
• Inputs: 3x RCA stereo
• Outputs: 1x RCA stereo / 1x 3.5 mm Jack (pre-output)
• Signal to noise ratio: ≥ 110 dB
• Dynamic range: ≥ 110 dB
• KNI+Sh: ≤ 0.003%
• Crosstalk: ≥ 103 dB
• Noise level: ≤ 9 µV
• Tone control (bass / treble): ±12 dB
• Frequency range: 20 Hz – 20 kHz (±0.1 dB)
• Power supply voltage: 12V DC, 1.5A
• Color: black

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