BRZHIFI Audio FV3-PRO High-Precision Passive Preamplifier - Remote Volume Controller for Active Speaker Systems | BRZHIFI Audio Solutions

1. Product Description

The FV3-PRO is a high-fidelity passive preamplifier featuring an ALPS high-precision motorized potentiometer at its core, ensuring pristine sound quality. It supports both manual and remote control operation modes, with manual adjustment remaining possible even when power is disconnected. Upon connecting to a 5V power supply, it offers intelligent functions such as auto-zeroing and configurable startup volume. Its independent power supply design completely eliminates circuit interference, making it an audio companion that combines performance with convenience.

2. Key Highlights

·Gain-boosting design, precise level control

• Preserves Source Dynamics: Faithfully retains the original dynamic range of the recording studio without compression or clipping.
• Reduces System Noise Floor: No additional amplification means the preamp's inherent noise floor isn't amplified, resulting in a darker, quieter background.
• Perfect Match for High-End DACs: Modern high-performance DACs provide sufficient output levels. The FV3-PRO ensures their original signal purity remains uncompromised.

·Multi-device compatibility, flexible adaptation to various scenarios

• System Upgrade Made Easy: When upgrading to power amplifiers or active speakers in the future, the FV3-PRO remains your reliable core.
• Master Hybrid Setups: Effortlessly build complex systems like "digital source + FV3-PRO + active subwoofer + power amplifier."
• Study/Living Room Flexibility: From desktop nearfield monitors to living room Hi-Fi systems, one preamp covers it all.

·Lossless audio quality, unadulterated original sound

• Restoring the Essence of Recording: Faithfully presents the true character of different recordings and equipment, allowing you to appreciate the music itself rather than the sound of the gear.
• Detail Excavator: Subtle nuances and spatial reverberations are preserved, creating a more immersive soundstage.
• Enduring Listening Comfort: Pure, unadulterated sound offers exceptional listening endurance, ensuring comfort during extended musical enjoyment.

3. Internal Configuration

·Selecting core components to lay the foundation for precision and purity—Japan's ALPS Type 27 Large Potentiometer

For a passive preamplifier, the signal path contains no active components for modification or compensation. Consequently, the volume potentiometer becomes the absolute core element influencing sound quality. The BRZHIFI FV3-PRO steadfastly employs the industry-recognized Japanese ALPS Type 27 large potentiometer. This is not mere specification stacking, but our steadfast commitment to "high precision" and "lossless sound quality."

·High-Quality CMC807 RCA Phono Jack

·Lightweight mini

·Equipped with a remote control

4. Panel/Interface Function Overview

5. Application Scenarios

On your desk or workbench, a pair of high-quality monitor speakers faithfully reproduce every nuance of your music. Yet reaching behind the speakers to adjust volume is extremely inconvenient, disrupting your focus while working or listening.

The FV3-PPRO's compact size and remote control functionality perfectly solve this pain point. Place it on your desk, connect it to your audio source and speakers, and you gain unprecedented control freedom. Whether processing audio, enjoying music, or gaming, optimize your listening experience with a simple touch at your fingertips—enjoying the convenience and precision of professional-grade equipment.

6. Specifications

7. Production process

We specialize in audio equipment OEM/ODM, backed by a professional R&D team and advanced production lines. From concept design and hardware development to software debugging and mass production, we deliver comprehensive turnkey solutions to ensure efficient product implementation and exceptional quality, making us your reliable manufacturing partner.

8. Packing&Shipping

9. Certificate

Products through CCC/FCC-CE/ROHS UL certification, the company has a young entrepreneurial team and has a complete and scientific quality management system.

10. Q&A

Q1: What is a passive preamp? How does it differ from an active preamp?

A: The core of a passive preamp is a pure resistive network (such as a high-quality potentiometer) that adjusts volume through physical voltage division. It requires no external power supply and therefore does not amplify or process the signal in any way. An active preamp, however, requires power and incorporates amplification circuitry to provide gain and modify the signal.

Advantages of the FV3-PRO: By eliminating active components and power supply, it fundamentally eliminates power supply noise and added distortion, ensuring the purest signal path. This makes it the ideal choice for audiophiles pursuing "pure, unadulterated" sound.

Q2: Can the FV3-PRO improve my system's sound quality?

A: The FV3-PRO's core philosophy is "lossless transmission," not "sound enhancement." It adds no artificial "flavorings." Its improvement lies in: maximally preserving the source's original signal through its "lead gain design" and premium components, while eliminating coloration and distortion caused by redundant circuitry and gain. You'll experience a darker background, clearer details, and a more precise soundstage—the essence of true sound quality enhancement: getting closer to reality.

Q3: My system already has a DAC (digital-to-analog converter) that connects directly to powered speakers. Why do I need this?

A: This is a very common scenario. While direct DAC connection is feasible, it presents two major drawbacks:

Inconvenient control: You must frequently bend down to manually adjust knobs on the speaker's back, significantly impacting your experience.

Potential sound degradation: Many DACs' digital volume control (especially at low levels) reduces bit depth, sacrificing dynamic range and detail.

FV3-PRO's Solution: As a high-precision analog volume controller, it provides remote convenience while controlling volume purely through analog means. This perfectly avoids digital sound quality loss, making it the ideal bridge between high-quality DACs and powered speakers.

Q4: Does this passive preamp reduce the volume?

A: This is precisely what the "gain-boosting design" addresses. While ordinary passive preamps may cause signal attenuation, the FV3-PRO employs precise impedance matching and circuit design to achieve "1V in, 1V out" lossless level transmission. It does not amplify the signal but ensures the input level is accurately and losslessly delivered to the power amplifier, providing ample drive level without compromising dynamic range.

Q5: Is it compatible with my equipment? (e.g., power amplifiers, powered speakers, turntables, etc.)

A: Broad compatibility is one of the core design goals of the FV3-PRO.

Fully compatible: All standard line-level devices such as CD players, DACs, streaming players, powered speakers, power amplifiers, etc.

Special Note: It cannot be directly connected to a turntable (MM/MC cartridge). Turntable output signals are extremely weak and require amplification and equalization through a dedicated phono preamp to convert them into standard-level signals before connecting to the FV3-PRO.

Q6: Does remote control operation affect sound quality?

A: Absolutely not. The remote function solely controls the mechanical components within the unit, such as relays or motorized potentiometers. This control circuitry is physically isolated and independent from the core audio signal path. During remote operation, the audio signal continues to travel through a pure passive network, ensuring zero compromise in sound quality.

Q7: Why choose the ALPS27 potentiometer? What are its benefits?

A: The ALPS27 is an industry-recognized high-quality potentiometer, and its benefits directly enhance your listening experience:

Excellent channel balance: Ensures consistent left/right channel volume and precise, stable soundstage positioning.

Long service life: Robust mechanical construction ensures durability.

Smooth adjustment feel: Delivers the premium damping sensation expected in Hi-Fi equipment.

Low noise, low distortion: Provides physical assurance for pure signal transmission.

Q8: My system is already excellent. How much improvement can the FV3-PRO deliver?

A: The better your system, the more sensitive it is to front-end changes. In high-end setups, the FV3-PRO doesn't "change" things—it "reveals" them. Like an immaculately clean pane of glass, it removes the final veil between your system and the source, allowing your equipment's true potential to shine through. You may notice a quieter background, richer micro-details, and a more stable soundstage—all hallmarks of elevated audio quality.