Fosi Audio V3 Mono Power Amplifier 48v/5a
€ 139,00 Incl. Vat
✅ 2 years standard warranty
✅ Free return within 14 days
✅ Orders before 17:00 → shipped today
❌ Out of stock
Out of stock|Delivery time: at this moment no date available yet
Email when stock available
FOSI AUDIO V3 MonoMono Class D Amplifier TPA3255 240W 4 Ohm
The Fosi Audio V3 MONO is a compact, powerful but still affordable 1-way amplifier. Based on a TI TPA3255 amplifier chip, it can deliver 240W at 4Ω. Furthermore, this amplifier is equipped with a host of audiophile components such as Japanese and German Elna and Wima capacitors, respectively, or a duo of DIP8-mounted TI NE5532 OPAs, giving you the option of replacing them if you want a specific sound coloration. Regarding connectors, the Fosi Ausio V3 offers a balanced XLR/jack 6.35mm combo input, an RCA input and a speaker terminal block for the output.
A DC48V 5A power supply is supplied
Fosi Audio V3: Noise and distortion-free amplification
The V3 mono amplifier benefits from PFFB technology, an advanced feedback design that significantly reduces distortion, improves linearity and enhances efficiency. It also remedies a structural problem in Class D amplification by negating the load dependency inherent to this technology. Furthermore, the aluminum enclosure design isolates the power supply from the amplifier section, preventing crosstalk.
Fosi Audio V3: A flexible amplifier
The V3 amplifier is designed to be integrated into multiple configurations, allowing you to switch easily between RCA and XLR inputs using the front panel switch. Furthermore, you can adjust the gain of the RCA input between 19dB and 25dB. Finally, if you wish for a different sound coloration, DIP8 mounting of the TI NE5532 OPAs enables them to be replaced.
| Specifications | |
|---|---|
| Product type | Mono class D Amplifier |
| Inputs | 1x Balanced XLR/jack 6.35mm combo 1x RCA (choice of 19dB or 25dB gain) |
| Output | 1x Speaker terminals |
| Amplification chip | TI TPA3255 |
| OPA | 2x TI NE5532 |
| Output power | 240W @4Ω 48V/5A 160W @6Ω 48V/5A 120W @8Ω 48V/5A 100W @4Ω 32V/5A |
| Speaker impedance | 2Ω – 8Ω |
| Frequency response | 10Hz-30kHz(±0.06dB) |
| SINAD | XLR: 101dB RCA: 93dB |
| Total harmonic distortion (THD) | <0.006% |
| Signal to noise ration (SNR) | ≥123dB |
| Gain setting (RCA input) | 19dB 25dB |
| General | |
|---|---|
| Power supply | 32-48V DC |
| Color | Black |
| Product dimensions | 142x107x41mm |
| Package | 1x FOSI AUDIO V3 Mono 1x Power adapter 48V/5A |
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We deliver your Hifimastery order as quickly as possible via DPD, DHL, or PostNL (your country’s national postal service). You choose your preferred carrier at checkout. All shipments are insured and tracked, so we handle any loss or damage.
Shipping Costs:
- Netherlands & Belgium: Free shipping on orders over €50;
- Other European countries: Free shipping on orders over €100–€200 (depending on country, always visible in checkout before payment).
The higher the order amount the lower the shipping costs until the free shipping amount is reached, which is fair...
Order Shipping Times:
- Orders placed before 17:00h and in stock ship the same day monday-friday;
- In case a product has a longer delivery time than this is mentioned at the stock status!!!
You choose we follow:
You can choose in the checkout what shipping company you want us to use for shipping your order. Sometimes due to longer delivery times etc, we can choose another reliable partner based on your order.
Track & Trace
We know you’re eager to enjoy your order—and we completely understand! Once your order has been shipped via an external carrier, you’ll receive an email from us containing a tracking number or a direct link to the carrier’s tracking page. This lets you see exactly when your order is expected to arrive.
If your order is delivered to a pickup point due to your absence, you’ll be notified either through the tracking information or via services provided by the carrier.
Returns & Right of withdrawal – We keep it simple
Not satisfied with your purchase? No worries! Returning items is simple and stress-free.
✨ Key Highlights:
- No reason needed – return “just because”
- 14-day reflection period – from delivery date and within 14 days later you can decide to keep it or not...
- Fast inspection – returns inspected within a few days most of time 5 days (max 14);
- refund will be done mostly same day after inspection is done.
Return Conditions:
Items are undamaged and clean.
- All accessories included (also manual etc);
- Original packaging;
- Pack items securely for safe return;
- Sealed products remain unopened (applies to fragile or hygiene-sensitive items, e.g., turntable styli, in-ear earbuds).
For furniture, always choose Option 2.
Option 1 – Return Label:
- Use our return portal to print a return DPD shippinglabel;
- Coverage is up to €500 via DPD (other carriers not insured);
- Returns are at the customer’s risk and expense (if you need more insurance value contact us so we can check for higher insurance or choose option 2)
Option 2 – Own Carrier:
- Arrange return with a carrier of your choice;
- Email us: “Return: order number …” to receive a return form to include in your package;
- Return requested more than 2 weeks after delivery day cannot be processed and declined.
Timeframe:
- You have 14 days to request a return calculated from the day the package was delivered to you;
- The package must be received in our warehouse within 2 weeks after your request to return the product.
Exchange product:
- Place a new order for the desired product;
- Original order must be returned and will be refunded (minus any return costs);
- Refunds processed via the original payment method within 2 weeks.

