Fosi Audio P4 HiFi Preamplifier: 3 RCA Inputs, EQ/Bypass, Swappable Op-Amps, Treble & Bass Tone Control For Audiophile Systems
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Product specifications
Detailed product description
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- Brand: Fosi Audio
- Sales: 305
- Package size: 25 × 20 × 6 cm
- Package weight: 0.8 kg
- Rating: 4.9 / 5
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Fosi Audio P4 HiFi Preamplifier: 3 RCA Inputs, EQ/Bypass, Swappable Op-Amps, Treble & Bass Tone Control For Audiophile Systems
Features
Pure, untainted reference-quality sound, tailored for discerning ears.
With a flat frequency response from 20Hz to 20kHz (±0.1dB) and a 105dB SINAD (Signal-to-Noise Ratio + Distortion), the P4 achieves nearly lossless signal transmission. Featuring Japanese Elna audio capacitors and Omron gold-plated signal relays, it eliminates current noise to ensure every detail is faithfully reproduced, rivaling the performance of high-end preamps costing tens of thousands.
Say goodbye to constant plugging and unplugging, and build a multi-device Hi-Fi system.
Three independent RCA inputs allow you to simultaneously connect a turntable (with external phono preamp), CD player, and high-end DAC. With the infrared remote, you can easily switch between sources with a single button press. Whether you’re enjoying your classic vinyl collection or streaming Hi-Res music, simply press a button to experience seamless listening.
Perfectly adaptable from low-sensitivity to high-resolution systems.
3dB/6dB/9dB Gain Adjustment
The ALPS vintage motorized volume knob uses an analog potentiometer structure with left-right channel error
From precise monitoring to personalized sound tuning, a dual-purpose machine.
Midpoint-adjustable bass and treble: Compensate for room acoustics or enhance rock/jazz atmospheres.
Hi-Fi Bypass Mode: Direct signal path with the EQ circuit bypassed, delivering uncolored, high-resolution sound.
Replaceable op-amp design: Compatible with popular dual-op-amp chips (such as MUSES02/OPA2604), allowing you to easily customize the sound signature to your preference—whether it's a "warm tube-like" or "crisp, analytical" tone.
Ideal for both desktop and rack setups, blending seamlessly into high-end systems.
Comprehensive remote control: Power on/off, switch inputs, and adjust volume/mute without the awkward "bending over to find the knob" experience.
PRE OUT Output: Connect an active subwoofer for a 2.1 system, or link multiple amplifiers for multi-room audio.
Highlight
Package Include
*P4 Preamplifier x1
*Power Adaptor x1
*User Manual x1