Price: $289.99 - $275.49
(as of Aug 18, 2025 10:57:04 UTC – Details)
Product Description
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Two V3 Mono Power Amplifier Merchant Video
Continuation of Co-Creation
Engineered for Audiophiles – Optimal Choice for Home Audio Systems
Input: RCA, XLR, ¼” TRS; Output: Passive Speaker (supports banana plug or bare wire connection)SINAD: XLR–101dB; RCA–93dB; SNR: ≥123dBRated Power Output: 48V/5A 240W@4Ω; 32V/5A 100W@4Ω
— Q: Why should I choose a 48V 10A power supply for the V3 MONO instead of a 48V 5A one?
— A: Since the V3 MONO can drive 2Ω speakers or subwoofers, the 48V 10A power supply provides the higher current needed to ensure adequate power.
1 Desktop 2.0
2 Home Theater 5.0
3 Home Theater 2.1
4 Bookshelf 2.0
Post-Filter Feedback Technology Integrated
Significantly reduces distortion, enhances linearity and frequency response to get superior sound.
Compact Yet Powerful
Crafts an immersive sound experience, satisfying your craving for superior musical quality.
Accurate Imaging with Zero Crosstalk
Enhances stereo depth and soundstage accuracy for a purer audio experience.
Easily Replaceable DIP8 Dual Discrete Op-amps
Meeting your pursuit of a personalized audio experience
1 PFFB Technology
2 Rated Power 240W
3 Pure Sound
4 Swappable Op-Amp Design
5 Power Rating
Provides You with Flexible Connectivity Options
Effortlessly switched by a toggle switch, easily adapted for both home and professional scenarios.
Advanced Cooling Design
Long-term efficient operation of the amp, prevents overheating.
With Minimalist Design
Effortlessly integrates into various settings like home theater, study room, desktop, and studios.
Automatic Signal Sensing
Enters standby after 10 minutes of no signal input, effectively reducing power consumption.
1 XLR Balanced & RCA Inputs
2 Premium Components
3 Heat Dissipation Design
4 Compact and Exquisite
5 Auto Power
Premium Internal Components 
NICHICON Caps, Japanese
Ensure superior sound clarity, longevity, and stable electrical performance, enhancing the fidelity of audio reproduction.
WIMA Caps, German
Provide exceptional sound quality and signal stability, greatly enhancing the audio experience.
ELNA Caps, Japan
Ensure enhanced audio clarity and stability, contributing to a richer sound experience.
Sumida Inductor, Japanese
Offers superior signal purity and noise reduction, elevating the amplifier’s sound performance.
Comparison
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Customer Reviews
4.2 out of 5 stars 26
4.6 out of 5 stars 1,158
4.5 out of 5 stars 1,288
4.7 out of 5 stars 712
4.4 out of 5 stars 365
4.7 out of 5 stars 29
4.0 out of 5 stars 15
Price
$275.49$275.49
$71.99$71.99
$79.99$79.99
$142.49$142.49
$79.99$79.99
—
$109.99$109.99
Type
Mono Amplifier
2.0 CH Amp
2.0 CH Amp
2.0 CH Mono Amp
Bluetooth 2.0 CH Amp
48V GaN Power Supply
48V10A Power Supply
MAX Power Output
300W
300W x 2
300W x 2
190W x2/ 300W x1
100W x 2
240W
480W
Input
RCA + XLR + ¼” TRS
RCA
RCA
RCA+XLR+¼”TRS
Bluetooth + RCA
–
–
Output
Passive Speaker
Passive Speakers+Pre-Out
Passive Speakers
Passive SPK +Sub-out
Passive Speakers
–
–
Treble & Bass Control
✘
✘
✔
✘
✔
✘
✘
THD
<0.006%
<0.003%
≤ 0.3%
<0.006%
≤0.03%
–
–
SNR
≥123dB
≥110dB
≥ 90dB
≥106dB
≥100dB
–
–
Terminating Impedance
2-8 Ohm
2-8 Ohm
2-8 Ohm
2-8 Ohm
4-8 Ohm
–
–
Power Adapter
48V/10A
32V/5A
32V/5A
48V/5A
24V/4.5A
48V/5.0A
48V/10A
Work Voltage
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
AC 110V – 240V
Crafted for HiFi Audiophiles: The amplifier stereo receivers allows you to drive a single passive speaker with one amp, delivering up to 240W @4Ω of rated power. It offers the flexibility to build your home audio 2/3/4/5-channel system effortlessly. The V3 Mono Mini Monoblock Amplifier can serve as a power amplifier for multi-channel AVRs, complementing the output power to easily drive high-power speakers in home theater systems.
Technological Breakthrough: Fosi Audio has achieved a technological breakthrough with the V3 Mono by incorporating PFFB (Post-Filter Feedback) technology. This innovation effectively addresses the load dependency issues common in Class-D amplifiers, improving distortion and enhancing frequency response, resulting in significantly enhanced sound quality and performance.
High-End Components: The home stereo system components features the TPA3255 Class-D amp chip, paired with premium components such as Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductors. The upgraded four-layer PCB ensures high power output, achieving a THD as low as 0.006%, a SINAD of 101dB, and an SNR of 123dB, ensuring audio fidelity and quality.
Efficient Heat Dissipation: Utilizing Fosi Audio’s stereo amplifier full-body heat dissipation design, the TPA3255 amplifier chip is placed at the bottom and integrated with the chassis, allowing heat to dissipate effectively through the casing. Dual side ventilation holes enhance internal airflow, ensuring stable, high-power output over extended periods.
Versatile and Customizable Design: The amplificador de audio supports both XLR/¼” TRS balanced and RCA single-ended (with gain selection) inputs, with an easy toggle switch for selection. Features an auto power/signal sensing mode to enhance energy efficiency. Customize your sound signature by replacing the stock NE5532 op-amps, supporting DIP8 dual discrete op-amps, compatible with Sparkos SS3602, MUSES02, OPA2604, Burson V5i, V6, V7, and more.
Customers say
Customers praise the amplifier’s sound quality, with one noting its highly detailed output and another highlighting its definition and accuracy of voices. They also find it offers excellent value for money.
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