Fosi Audio V3 Mono amplifier | 48V (240W, 4 Ohm)

240W Compact Class D Mono Amplifier with PFFB, XLR/RCA/TRS inputs and swappable op-amps for true HiFi performance

Starts at 174 EUR /pc.

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Highlights:

• Mono Class D amplifier with up to 240W @4 Ohm
• Post-Filter Feedback technology for improved sound quality
• Replaceable DIP8 op-amps for a customized audio profile
• RCA, XLR, and ¼" TRS inputs with selectable gain
• Compact design with advanced heat dissipation
• Audiophile-grade components and ultra-low THD at 0.006%
• Automatic signal detection for energy saving
• Perfect for stereo, home theater, and multi-channel setups

Compact Monoblock Amplifier with Power and Finesse:

The Fosi Audio V3 Mono is the ideal choice for those who demand maximum performance in a compact and elegant design. Delivering up to 240 watts at 4 ohms and supporting RCA, XLR, and ¼" TRS inputs, this monoblock amplifier is built to deliver precise and powerful sound—whether in a stereo setup or as part of a multi-channel home theater. Based on the popular V3 stereo model, the Mono version is further refined with input from audiophiles worldwide.

Advanced Technology and Exceptional Sound:

What truly sets the V3 Mono apart is its integration of Post-Filter Feedback (PFFB) technology. This advanced feature minimizes distortion and improves frequency response by dynamically adjusting amplifier output according to speaker load. The result is more accurate sound reproduction with improved linearity and clarity. The V3 Mono is powered by Texas Instruments’ TPA3255 chip, known for its high efficiency and superb sound quality. Paired with premium components like Nichicon and ELNA capacitors, WIMA film capacitors, and Sumida inductors, the V3 Mono achieves a THD below 0.006%, SINAD up to 101dB, and an SNR of 123dB.

Build Your System – Your Sound, Your Rules:

The V3 Mono allows you to create a flexible, scalable sound system. Use one amplifier per channel and configure 2, 3, 4, or 5 channels to suit your setup—whether for surround sound or a pure HiFi system. With support for both balanced and unbalanced signals, the V3 Mono integrates seamlessly into professional or home environments. You can also swap out the included NE5532 op-amps for your preferred DIP8 dual discrete op-amps.

Engineered for Stability and Longevity:

Fosi Audio has implemented clever thermal design choices. The TPA3255 chip is mounted at the base of the chassis, allowing the casing to act as a heatsink. Additional ventilation holes on both sides ensure effective airflow and stable operation—even under extended high-output use. The integrated auto-sensing function powers the unit on when an input signal is detected, optimizing energy efficiency and ease of use. Overall, the V3 Mono is the perfect choice for enthusiasts and quality-conscious listeners seeking precision, power, and flexibility in a sleek package.

Boost Your Amplifier and Unlock Full Power with:
Fosi Audio 24V Power Supply (240W)

Specifications:

• Channel: 1.0
• Amplifier Chip: TPA3255
• Input: RCA, XLR, ¼" TRS
• Output: Passive speaker (banana plug or bare wire)
• SINAD: XLR: 101dB ; RCA: 93dB
• SNR / Dynamic Range: =123dB
• THD: <0.006%
• Gain: XLR/¼” TRS: 20dB ; RCA: 25dB, 31dB
• Impedance: 2–8 Ohm
• Power Output: 48V/5A – 240W @4 Ohm ; 32V/5A – 100W @4 Ohm
• Frequency Response: 10Hz–30kHz (±0.06dB)
• Input Voltage: DC 32–48V
• Standard Power Supply: 48V/5A

Here you can see how other customers have rated the item with character, and possibly made a review.

Average rating (5,0):

– Of total 1 ratings

Super forstærker, med masser af saft og kraft, med de rette op-amps er den tæt på ægte Hifi, men jeg bruger den til min center (en ret krævende Monitor Audio) i surround systemet og her er den perfekt.

FA-V3MONOEU-48V: Fosi Audio V3 Mono amplifier | 48V (240W, 4 Ohm) | 1 pc.

FA-V3MONOCOMBO-48V: Fosi Audio V3 Mono amplifier | 48V (240W, 4 Ohm) | 2 pc.

The product number 'FA-V3MONOCOMBO-48V' consists of the following sub components:
2x FA-V3MONOEU-48V: Fosi Audio V3 Mono amplifier \| 48V (240W, 4 Ohm) \| 1 pc.

Brand description - Fosi Audio

Fosi Audio redefines HiFi by combining innovation, quality, and value. Since 2017, they have been creating high-performance home audio solutions that integrate advanced technology with affordability. Our product range includes amplifiers, DACs, speakers, and headphone amps—designed in close collaboration with users to ensure an unparalleled sound experience. With a passion for HiFi and a commitment to excellence, they continue to deliver top-tier sound without the premium price tag.

Manuals and user guides for Fosi Audio products

Unfortunately, as manufacturers do not make manuals or guides in all languages, we cannot guarantee that a local language manual is included for the item.
- If you are unsure about a manual available in the desired language, just contact us and we will do what we can to help.