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NEW Fosi Audio V3 MONO Mini Power Amplifier

Fosi AudioPart # 235-276
Model: V3 MONO

The Fosi Audio V3 Mono is a compact monoblock power amplifier designed for high-fidelity audio systems. It delivers clean, powerful output with excellent detail, making it ideal for audiophiles seeking precise sound reproduction. Its minimalist design and robust construction promise a reliable performance in any system.

Key Features

  • TPA3255 Class-D amplifier chip
  • PFFB (Post-Filter Feedback) technology for reduced distortion and improved linearity
  • Swappable op-amp design for a customizable sound
  • Auto standby mode for energy efficiency
  • Supports both balanced XLR and unbalanced RCA inputs
  • Japanese and German components deliver superior craftsmanship
  • All-aluminum alloy chassis with advanced cooling design
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Overview

Fosi Audio V3 MONO Mini Power Amplifier

Fosi Audio V3 Mono Mini Power Amplifier

The Next-Gen Monoblock

A debut Class D audio amplifier featuring PFFB technology, enhancing sound clarity and overall system efficiency—delivering a versatile upgrade for your home audio setup.

Engineered for Audiophiles - The Optimal Choice for Home Audio Systems

In 2023, after launching the V3 stereo amplifier, Fosi received a wealth of insightful feedback from audio enthusiasts worldwide. They listened closely, documented thoroughly, and developed with care—resulting in the realization of your ideas: the V3 mono.

Post-Filter Feedback Technology Integrated

Greatly reduces distortion while improving linearity and frequency response for exceptional sound quality.

Compact Yet Powerful

Creates an immersive audio environment that fulfills your desire for exceptional musical quality.

Accurate Imaging with Zero Crosstalk

Improves stereo imaging and soundstage precision for a more authentic and refined audio experience.

Easily Replaceable DIP8 Dual discrete Op-amps

Fulfills your desire for a customized and personal audio experience.

Connectivity Flexibility

Easily adapted for home or professional use with a simple toggle switch for quick mode selection.

Minimalist Design

Seamlessly fits into a variety of environments including home theaters, study rooms, desktops, and studios.

Automatic Signal Sensing

Automatically enters standby mode after 10 minutes of no signal input, efficiently lowering power consumption.

NICHICON Caps, Japanese

Delivers superior sound clarity, long-lasting durability, and stable electrical performance, enhancing audio reproduction fidelity.

WIMA Caps, German

Offers outstanding sound quality and reliable signal stability, significantly elevating the overall audio experience.

Sumida Inductor, Japanese

Delivers superior signal purity and effective noise reduction, enhancing the amplifier’s overall sound performance.

ELNA Caps, Japanese

Provides improved audio clarity and stability, contributing to a more immersive and enriched sound experience.

Mini Monoblock Amplifier
Designed for HiFi enthusiasts, the V3 Mono powers a single passive speaker with up to 240W @4Ω of rated output. It provides the flexibility to build 2/3/4/5-channel home audio systems with ease. The V3 Mono also functions as a power amp for multi-channel AVRs, enhancing output to effortlessly drive high-power speakers in home theater setups.

Innovative Cutting-Edge Technology
Fosi Audio introduces a breakthrough with the V3 Mono by applying PFFB (Post-Filter Feedback) technology—developed independently—for the first time. This advancement effectively addresses the typical load dependency issues found in Class-D amplifiers, reducing distortion and improving frequency response, resulting in a significant boost in sound quality and overall performance.

Audiophile-Grade Components
The V3 Mono is built around the premium TPA3255 Class-D amplifier chip and features top-tier components, including Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductors. It also incorporates an upgraded four-layer PCB. This high-quality configuration delivers powerful output with ultra-low THD of 0.006%, a SINAD of 101dB, and an SNR of 123dB—ensuring exceptional audio fidelity and performance.

Advanced Cooling
Featuring Fosi Audio's innovative full-body heat dissipation design, the TPA3255 amplifier chip is mounted on the bottom and tightly coupled to the chassis, allowing heat to be efficiently transferred through the enclosure. Dual side ventilation holes further improve internal airflow, ensuring the V3 Mono maintains stable, high-power output during long listening sessions.

User-Friendly Design
Offers support for both XLR/¼" TRS balanced and RCA single-ended (with gain selection) inputs, easily switchable via a convenient toggle. It also includes an automatic power/signal sensing mode for improved energy efficiency. For added customization, users can fine-tune their sound signature by swapping the stock NE5532 op-amps with DIP8 dual discrete options like Sparkos SS3602, MUSES02, OPA2604, Burson V5i, V6, V7, and others.

Specifications

  • Channel : 1.0
  • Amplifier Chip : Texas Instruments TPA3255
  • Input : RCA, XLR, 1/4" TRS
  • Output : Speaker Output (supports banana plug or bare wire connection)
  • SINAD : XLR: 101dB ; RCA: 93dB
  • SNR : ≥123dB Dynamic Range : ≥123dB
  • THD : ＜0.006%

  • Gain : XLR/¼” TRS: 20dB ; RCA: 25dB, 31dB;
  • Terminal Impedance : 2-8Ω
  • Rated Power Output : 48V/5A--240W@4Ω ; 32V/5A --100W@4Ω
  • Frequency Response : 10Hz-30kHz（±0.06dB）
  • Input Voltage Range : DC 32-48V
  • Standard PSU : 48V/5A

Product Details

BrandFosi Audio
ModelV3 MONO
Part Number235-276
Unit of MeasureEach
Weight1

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