![[🎶SG] FOSI AUDIO P4 Mini HiFi Preamplifier With 3 RCA Inputs, EQ/Bypass, Swappable OP-Amps, Treble & Bass Tone Control](http://samaudiosg.com/cdn/shop/files/FOS-P4cover_shopify_{width}x.png?v=1743134965)
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Contact Us:
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FOSI AUDIO P4
> Mini Control Hub
> Practical and User-friendly
> Motorized Potentiometer
> Compact and Solid
> Exceptional Performance
> Studio-level Signal Accuracy
> Gain Staging
> Tone Control Freedom
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Descriptions:
> 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 pre amp 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
> Perfectly Paired With The V3 Amp
> With a harmonious apperance, it elevates both the visual and audio experience of your sound system.
> Studio-Level Signal Accuracy
> ±0.1dB Frequency Response & 105dB SINAD
> 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.
> Gain Staging
> Perfectly adaptable from low-sensitivity to high-resolution system.
> 3dB/6dB/9dB Gain Adjustment:
> Low Gain (3dB): Protects sensitive power amplifiers from overload distortion.
> High Gain (9dB): Reduces system noise floor and enhances dynamic range.
> The ALPS vintage motorized volume knob uses an analog potentiometer structure with left-right channel error <0.1dB, ensuring smooth, unbiased volume control.
> Tone Control Freedom
> Adjustable EQ + Replaceable Op-Amps + Bypass Mode
> 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.
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Specifications:
> Input: RCA x3
> Output: RCA, Pre-Out
> SNR: ≥ 110dB
> THD+N: ≤ 0.003%
> Treble adjustment range: ±6dB
> Bass adjustment range: ±12dB
> Frequency Response: 20Hz-20kHz (±0.1dB)
> Power Adapter Output: 12V/1.5A
> Product Adapter Input Voltage Range: AC 110V - 240V
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