Product Highlights
RCA Inputs
SNR
THD+N
SINAD
Product Highlights
RCA Inputs
SNR
THD+N
SINAD
Fosi Audio P4 Mini Preamplifier
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Features
- Triple RCA Inputs
- Bass, Treble, and Gain Control
- Motorized Pot for Smooth Adjustment
- Bypass Function for Pure Signal Path
- Op-Amp Rolling: SS3602, MUSES02, OPA2134PA
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Fosi Audio P4 Mini Preamplifier
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Shipping Information
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Customer Support
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FAQ’s
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Review Videos
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)
P4 & ZP3 Comparison
Thinking about a new preamp? Let’s line up P4 and ZP3, and see what makes each one special.
Product details
Description
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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.
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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.
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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.
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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
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
What‘s in the box？
- Fosi Audio P4 Mini Preamplifier x 1
- 12V/1.5A Power Supply x 1
- User’s Manual x 1
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