--- product_id: 535540558 title: "Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply" brand: "fosi audio" price: "7536256β‚«" currency: VND in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.vn/products/535540558-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255 store_origin: VN region: Vietnam --- # Ultra low 3W idle power consumption 300W peak power output Advanced heat dissipation tech Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply **Brand:** fosi audio **Price:** 7536256β‚« **Availability:** βœ… In Stock ## Summary > πŸ”Š Elevate your audio game with power, precision, and style β€” don’t miss out on sonic perfection! ## Quick Answers - **What is this?** Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply by fosi audio - **How much does it cost?** 7536256β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/535540558-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Customize Your Sound:** Supports op-amp upgrades like Sparkos SS3602 and MUSES02 for personalized audio tuning. - β€’ **Powerful yet Compact:** 300W Class D amplifier delivers room-filling sound without the bulk. - β€’ **Energy Smart & Efficient:** Consumes just 3W at idle, saving on electricity without sacrificing sound quality. - β€’ **Stay Cool Under Pressure:** Advanced heat dissipation ensures stable, long-lasting performance during marathon listening sessions. - β€’ **Sleek Design Meets Durability:** Robust metal casing with a modern minimalist look fits seamlessly into any professional or home setup. ## Overview The Fosi Audio V3 is a 300W Class D stereo power amplifier featuring a TPA3255 chip, designed for HiFi home theater and bookshelf speakers. It boasts advanced heat dissipation technology, a compact metal chassis, and customizable op-amp compatibility for tailored sound. With ultra-low idle power consumption of just 3W, it combines energy efficiency with high-fidelity audio, making it an ideal choice for discerning audiophiles and professionals seeking powerful, reliable, and stylish amplification. ## Description Product Description Fosi Audio V3 Mini Stereo Power Amplifier Integrated quality components and groundbreaking heat dissipation design enable high and stable performance catering to audiophiles' demand. Born for HiFi Enthusiasts Using a minimalist design language, focusing more on enhancing the sound quality and performance of the product, making it the best-sounding power amplifier of Fosi Audio to date. Max Power Output: 300Wx2@4Ξ© SINAD: 88dB | SNR: β‰₯110dB THD: ≀0.003% | Noise Floor: 140uV Frequency Response: 20Hz-20kHz TI TPA3255 Integrated Enabling superior audio quality & ultra-low distortion across the audio band with Class-D efficiency Swappable Op-Amps Compatible with 8-pin dual op-amps. Roll them to get your preferred sound signature Audiophile-Grade Capacitors Built-in quality Japanese NCC, ELNA, and German WIMA capacitors for outstanding performance Japanese SUMIDA Inductors Professional audio inductors which have lower impedance and enable support for larger currents Logarithmic Potentiometer Built-in taper A Pot: Be sure to set the source volume to at least 50% and adjust the V3 to maximum. Groundbreaking Heat Dissipation Vents on the top and bottom, and whole-body heatsink design enhance air circulation and cooling About the "Pre-out" The "Pre-out" level is NOT controlled by the volume control. How to change audio balance levels between the left and right audio channels? 1. Computer: Settings > Sound > Fosi Audio, and change the left and right balance levels. 2. iPhone: Settings > Accessibility >Audio/Visual> Balance, slide horizontal slider to the left or right to adjust the balance. How to change audio balance levels between the left and right audio channels? 1. Computer: Settings > Sound > Fosi Audio, and change the left and right balance levels. 2. iPhone: Settings > Accessibility >Audio/Visual> Balance, slide horizontal slider to the left or right to adjust the balance. Do I need a pair of the same opamps or can they be swapped in different combinations? If your OP-AMP is pin-to-pin (P2P), meaning the pins and functions of the two OP-AMPs are exactly the same, so you can directly install one model at a time. However, there might be a difference in sound quality or sound volume on one side. Do I need a pair of the same opamps or can they be swapped in different combinations? If your OP-AMP is pin-to-pin (P2P), meaning the pins and functions of the two OP-AMPs are exactly the same, so you can directly install one model at a time. However, there might be a difference in sound quality or sound volume on one side. What is a difference between two versions of V3 amp - 32v and 48v? Compared to a 32V power supply, a 48V power supply can enhance the amplifier's power output, providing more headroom to prevent distortion and enabling it to drive larger, more powerful, or higher-impedance speakers. What is a difference between two versions of V3 amp - 32v and 48v? Compared to a 32V power supply, a 48V power supply can enhance the amplifier's power output, providing more headroom to prevent distortion and enabling it to drive larger, more powerful, or higher-impedance speakers. Can the V3 amplifier be bridged to work as a monoblock amplifier? It doesn't support bridge mode. Can the V3 amplifier be bridged to work as a monoblock amplifier? It doesn't support bridge mode. Only one channel has a sound or unbalanced output? Cross-check left & right speakers, speaker wires, input cable eliminating either speaker or wiring. Please ensure that the speaker wire is correctly connected and not bent. Only one channel has a sound or unbalanced output? Cross-check left & right speakers, speaker wires, input cable eliminating either speaker or wiring. Please ensure that the speaker wire is correctly connected and not bent. Comparison Chart V3 Type 2.0 CH Amp MAX Power Output 300W x 2 Input RCA Output Passive SPK +Pre-out THD <0.003% SNR β‰₯110dB Power Adapter 32V/5A Learn More V3 Type 2.0 CH Amp MAX Power Output 300W x 2 Input RCA Output Passive SPK +Pre-out THD <0.003% SNR β‰₯110dB Power Adapter 32V/5A ZA3 Type 2.0 CH Amp/Monoblock MAX Power Output 180W x 2/235W x 1 Input RCA+XLR (¼”TRS) Output Passive SPK +Sub-out THD <0.006% SNR β‰₯106dB Power Adapter 48V/5A Learn More ZA3 2.0 CH Amp/Monoblock 180W x 2/235W x 1 RCA+XLR (¼”TRS) Passive SPK +Sub-out <0.006% β‰₯106dB 48V/5A V3 MONO Type Monoblock Amp MAX Power Output 240W x 1 Input RCA+XLR (¼”TRS) Output Passive Speaker THD <0.006% SNR β‰₯123dB Power Adapter 48V/5A Learn More V3 MONO Monoblock Amp 240W x 1 Passive Speaker β‰₯123dB BT20A PRO Type Bluetooth 2.0 CH Amp MAX Power Output 300W x 2 Input Bluetooth + RCA Output Passive Spk+Pre-out THD ≀ 0.03% SNR β‰₯ 108dB Power Adapter 32V/5A Learn More BT20A PRO Bluetooth 2.0 CH Amp Bluetooth + RCA Passive Spk+Pre-out ≀ 0.03% β‰₯ 108dB TB10D Type 2.0 CH Amp MAX Power Output 300W x 2 Input RCA Output Passive Speakers THD ≀ 0.3% SNR β‰₯ 90dB Power Adapter 32V/5A Learn More TB10D Passive Speakers ≀ 0.3% β‰₯ 90dB Review: Remarkable little amp - Bought this for my study, with a 32V power supply, to drive a couple of small, 6 Ohm, Quad desktop speakers. The foot print is perfect for a desktop (it has replaced a full size integrated amp and leaves me a lot more space). Seems very well put together, suitably weighty, nice heavy case. I like the logarithmic volume pot, it works very well in this application, although I see that some other people don't. The power LED is bright enough to see, but not distracting. I find it is very nice to listen to, good detail, pleasantly lively. I'm quite fussy about audio gear and wasn't sure whether I'd like this, but I am impressed. Sound quality is remarkable, given the small size and the very reasonable price. I might even treat myself to an orange volume knob for it. Review: Very low electricity/power usage - There will be all sorts of great and well deserved reviews of this amp but one thing I wanted to show was the actual electrical power usage of this fantastic little amp. See attached picture. This FOSi Audio v3 amp is using only 3W when driving a pair of Wharfedale 9.1 speakers @6 ohms. Fed by a WiiM Pro streamer with it's output audio set at 95% That's absolutely incredible in this day and age of high electricity prices, incredible. Previously was using a Harman Kardon AVR130 and it's power usage was nearly 70W on idle, not even playing anything. Amazing clean sound from the amp and it drives the 6 ohm wharfedale speakers effortlessly. So happy with this lovely little amp, amazing price too. Would've liked if it came with a remote, otherwise it's perfect! ## Features - Immersive Audio Experience - Enjoy rich, detailed dynamics with the Fosi Audio V3 power amplifier, which delivers crystal-clear sound from delicate highs to profound lows. Its customizable op-amp design allows for personalization with upgrades like Sparkos SS3602, MUSES02, and other 8-pin dual options. - Exceptional Craftsmanship - The Fosi Audio V3 is meticulously engineered with high-quality components, ensuring durability and reliability. Its sturdy metal casing and sophisticated internal circuitry demonstrate our dedication to superior performance. Advanced heat dissipation technology keeps the amplifier cool during extended use, promoting stable operation and a longer lifespan. - Modern and Compact Design - With its compact form factor and sleek contemporary design, the V3 power amplifier is not only space-efficient but also a harmonious fit for various home decors. Its elegant shape and clean lines enhance any living room, study, or office space, offering both style and functionality. - Versatile for Various Settings - Enhance your home theater experience with the Fosi Audio V3, filling your living room with rich, immersive sound. Or, let it bring out the subtleties of your music in the quiet of your study or office. Its adaptability across various settings and portable design ensure consistently high-quality sound wherever you place it. - Performance Meets Practicality - The Fosi Audio V3 provides a listening experience that music enthusiasts and professionals will appreciate, striking a balance between superior sound quality and sensible spending. It's an audio solution that doesn't compromise on excellence, ensuring value in every note. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C36S8DCT | | Best Sellers Rank | 4,582 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 11 in Hi-Fi Amplifiers | | Box Contents | Power Supply | | Brand Name | Fosi Audio | | Country of Origin | China | | Customer Reviews | 4.4 out of 5 stars 1,200 Reviews | | Manufacturer | Fosi Audio | | Manufacturer Part Number | V3 | | Model Number | V3 | | Product Warranty | 24 months | ## Images ![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply - Image 1](https://m.media-amazon.com/images/I/51jOyYN2wnL.jpg) ![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply - Image 2](https://m.media-amazon.com/images/I/71HpS-6wjYL.jpg) ![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply - Image 3](https://m.media-amazon.com/images/I/71S+JXDSy1L.jpg) ![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply - Image 4](https://m.media-amazon.com/images/I/71SHro6HzvL.jpg) ![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 32V5A Power Supply - Image 5](https://m.media-amazon.com/images/I/61dKq2uWlOL.jpg) ## Questions & Answers **Q: How to change audio balance levels between the left and right audio channels?** A: 1. Computer: Settings > Sound > Fosi Audio, and change the left and right balance levels. 2. iPhone: Settings > Accessibility >Audio/Visual> Balance, slide horizontal slider to the left or right to adjust the balance. **Q: Do I need a pair of the same opamps or can they be swapped in different combinations?** A: If your OP-AMP is pin-to-pin (P2P), meaning the pins and functions of the two OP-AMPs are exactly the same, so you can directly install one model at a time. However, there might be a difference in sound quality or sound volume on one side. **Q: What is a difference between two versions of V3 amp - 32v and 48v?** A: Compared to a 32V power supply, a 48V power supply can enhance the amplifier's power output, providing more headroom to prevent distortion and enabling it to drive larger, more powerful, or higher-impedance speakers. **Q: Can the V3 amplifier be bridged to work as a monoblock amplifier?** A: It doesn't support bridge mode. **Q: Only one channel has a sound or unbalanced output?** A: Cross-check left & right speakers, speaker wires, input cable eliminating either speaker or wiring. Please ensure that the speaker wire is correctly connected and not bent. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Remarkable little amp *by T***R on 8 March 2024* Bought this for my study, with a 32V power supply, to drive a couple of small, 6 Ohm, Quad desktop speakers. The foot print is perfect for a desktop (it has replaced a full size integrated amp and leaves me a lot more space). Seems very well put together, suitably weighty, nice heavy case. I like the logarithmic volume pot, it works very well in this application, although I see that some other people don't. The power LED is bright enough to see, but not distracting. I find it is very nice to listen to, good detail, pleasantly lively. I'm quite fussy about audio gear and wasn't sure whether I'd like this, but I am impressed. Sound quality is remarkable, given the small size and the very reasonable price. I might even treat myself to an orange volume knob for it. ### ⭐⭐⭐⭐⭐ Very low electricity/power usage *by T***V on 24 June 2023* There will be all sorts of great and well deserved reviews of this amp but one thing I wanted to show was the actual electrical power usage of this fantastic little amp. See attached picture. This FOSi Audio v3 amp is using only 3W when driving a pair of Wharfedale 9.1 speakers @6 ohms. Fed by a WiiM Pro streamer with it's output audio set at 95% That's absolutely incredible in this day and age of high electricity prices, incredible. Previously was using a Harman Kardon AVR130 and it's power usage was nearly 70W on idle, not even playing anything. Amazing clean sound from the amp and it drives the 6 ohm wharfedale speakers effortlessly. So happy with this lovely little amp, amazing price too. Would've liked if it came with a remote, otherwise it's perfect! ### ⭐⭐⭐⭐ Amazing sound but lacks an important feature *by R***S on 31 December 2023* I can't compare this amp with any other products in the same class D amp category, there might be a better performing amp for this price. I first tried it with my big Tannoy Cheviots but this was obviously asking too much for the little V3 to bare. However when I hooked it up to my Tannoy Revoutions, the full potential was immediate. As a nearfield amp, it works perfectly well. The makers have not correctly labeled the pre-out socket. This is in fact, a fixed line level out. This is only useful for connecting to a recording device or maybe to another amp that has its own volume control. So if you want to use this unit to power a subwoofer, you will always be adjusting the volumes to match each other. Just as a stand alone amp, paired with the right speakers I doubt if anything beats the price ## Frequently Bought Together - Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply - Fosi Audio Replaceable Control Knob Orange Controller for V3 Amplifier Stereo Amplifier Home Audio - Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/535540558-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255](https://www.desertcart.vn/products/535540558-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-24*