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Fosi Audio

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

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Returnable until Jan 31, 2025

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jan 24
Order within 11 hours and 53 minutes
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Model: V3


Features

  • Compact Yet Powerful: The V3 mini power amplifier combines a minimalist design with exceptional performance. With a power output of up to 600W, it can effortlessly drive 2-8 speakers, delivering impressive sound quality. Its compact size makes it suitable for various applications, from bookshelves and desktop setups to home theaters
  • Audiophile-Grade Components: It features the TPA3255 high-end digital class D amp chip and utilizes premium Japanese NCC, ELNA, and German WIMA capacitors, and Japanese Sumida inductors for exceptional audio quality. With a SINAD rating of up to 88dB, an SNR of up to 110dB, and a low noise floor of only 140uV, it delivers exceptional clarity and low distortion
  • Scalable and Fun: Tailor your sound experience by swapping the stock NE5532 op-amps. V3 is compatible with a variety of 8-pin dual op-amps like Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA, etc. When replacing the op-amp, please make sure the chip is oriented correctly and the procedure is done accurately
  • Note: The "Pre-out" level is NOT controlled by the volume control as the V3 is not an integrated amplifier, so the sound is NOT adjustable when you are connected to the "Pre-out"

Product Dimensions ‏ : ‎ 6.54 x 4.13 x 1.38 inches; 2.93 Pounds


Item model number ‏ : ‎ V3


Date First Available ‏ : ‎ May 5, 2023


Manufacturer ‏ : ‎ Fosi Audio


Country of Origin ‏ : ‎ China


Best Sellers Rank: #18,102 in Electronics (See Top 100 in Electronics) #36 in Audio Component Amplifiers


#36 in Audio Component Amplifiers:


Customer Reviews: 4.5 4.5 out of 5 stars 842 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jan 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Excellent Beast of an Amplifier
Model: V3
Don't believe the 300 watt claims of the manufacturer. (I don't know why they just don't rate the amp with RMS real world specs). Still the Fosi Audio V3 is an excellent amplifier when paired with the optional 48V power supply, although it increases the cost. With the supplied stock power supply, the amp can deliver about 30 watts of real power and with the 48V power supply it can deliver about 80 watts of unadulterated bliss. The sound is clean with absolutely no hiss. You can tailor the sound by easily replacing the socketed OpAmps inside the amp, just make sure you insert them with the proper polarity. OpAmps can range from several to over a hundred dollars for a set. Better OpAMps can give you better depth and a wider sound stage as well as a mellower sound. Remember this is a no frills amplifier with only pair of inputs, it is basically a volume knob and nothing else. But this is perfect when used as a desktop amplifier to drive a pair of desktop speakers. In this mode of operation, you do not need the optional power supply since most desktop speakers are quite efficient and do not need much power. The 48V provides a more heft to the sound with the added power. It can easily deliver enough power to drive most speakers. With either power supply, the amp seems capable of driving even 4-ohm loads without distortion which most modern amps fail to do. Some Pros: * Cheap but great value * Compact size * Very efficient * Swappable OpAmps * High quality components: Elna capacitors, WIMA Output capacitors, Sumida inductors and NCC Capacitors Some cons: * Fosi used to supply the amp with the copper volume knob as well as the black one but it is now an added option. * The amp goes to sleep rather quickly after the input signal is cut. It takes about six seconds for it to come alive when signal is restored. * There is only one pair of RCA inputs * No Bluetooth capability * No subwoofer output ... show more
Reviewed in the United States on March 16, 2024 by Jon96789
    • Fosi Audio V3: A Budget Amplifier paired with really nice speakers?
Model: V3
I had been hearing about the release of this amp from various forums and decided to experiment with it with a couple of speakers that I have acquired I’ve the last 6 years I or so. I’m a bargain hunter at heart. On one end, I have a pair of Klipsch LaScala’s from the early 1980’s that I resurrected from the dead. They were in horrible shape and came from a church that used them as their auditorium PA. They are know for their efficiency and usually have synergies with tube amps. On the other end, I have the electrostatic Martin Logan ESL’s, which sound completely different, are very detailed and have a reputation of being challenging to drive, although the newer Martin Logan’s don’t have this problem as much. I have been using a 90 watt per channel tube integrated amp and was really looking for an amp that was much cleaner and imparted less distortion, which a tube amp for the most part is built to do. The tube amp sounds great but it seems to blur the sound a bit, if that makes sense. With the LaScala’s, the V3 power was way more needed to drive them. It didn’t sound harsh or brittle and in fact, was completely quiet with the volume knob maxed. My tube amp imparts a slight hiss at the tweeter that is audible from my sitting position. The V3, checked all the boxes and did everything well. The highs and mids were nice and balanced and the biggest difference was with the low end. I have 2 SVS SB1000 subs and the V3 really provided nice and controlled texture to the bass region, something that was lacking in my tube amp. I won’t go as far as using the magical language to describe the sound that many audiophiles use but as this is a subjective review, what I can say is that the amp did its job and at this price, it really is a no-brainer for people that even are wanting to use this will quality speakers. Martin Logan ESL’s Challenge: These speakers are known to have dynamic impedance swings, with ohms that often dip, making them a tough act for many amplifiers. But the Fosi V3 didn’t strain at all. It provided consistent power, ensuring the ESL’s remained articulate and expressive. Much better than my tube integrated. The dips in ohms which could cause some amplifiers to falter, only showcased the stability of the V3. Very surprising for the low cost. Again, what can I say…these small inexpensive amps have improved to the point where they are an incredible value. Conclusion: The Fosi Audio V3 isn’t just a budget amplifier. It’s an amplifier that can be used with expensive speakers. For anyone hesitant to use the Fosi in similar use cases, give it a try. For the price, there’s very little to lose. ... show more
Reviewed in the United States on July 26, 2023 by David P. Vivar
    • No frills, quality build, stays cool, 32V PSU will be underpowered for many, recommended!
Model: V3
This amp is used for near field listening in my office. It is driving a Polk RM3000 satellite system (6 ohms). I selected this amp because I like the simple design with quality components. I have experienced no background hiss or noise. I probably would have given it 5 stars if I had purchased the model with the 48V PSU. I have the input at 100% and normal listening volume ranges between 45 to 60 percent on the volume knob. The 32V PSU probably works fine for efficient, 4 ohm speakers. Overall, it seems like a quality item. ... show more
Reviewed in the United States on December 1, 2024 by Mark Hamilton
    • Excellent 2 Channel Amplifier for streaming music and videos from my computer
Model: V3_48V/5A
I enjoy music and appreciate good audio quality but I am not an audiophile. I use the Fosi V3 to listen to streaming music and video from an ASUS PN51 Mini PC's 3.5 mm audio output. I purchased the Fosi V3 with the 48V Power Supply to make sure it had adequate power for my two, highly rated, floor standing Infinity Primus 360 speakers, which sit to the left and right of a large flat panel TV. The Fosi V3 and the similarly sized ASUS Mini PC sit on an end table by my sofa for easy access. I am amazed at the sound quality whether its watching a YouTube music video or streaming a movie. The volume control is adjusted somewhere between noon and 3 O'clock depending upon the output volume of the streaming source. I have never turned it past 3 O'clock, because this was plenty loud in my living room environment. I spent several hours doing research on these mini amps, watching YouTube reviews plus reading several online reviews. From this research it became clear that the Fosi V3 was the best available 2 channel mini amplifier on the market. The sound quality from the Fosi V3 is the best I have heard coming out of my two excellent Infinity speakers. From brilliant highs to smooth mid tones, good base punch, music sounds very natural. I love the simplicity of a single control. The Fosi V3's volume control is just the right size. Excellent design and engineered amplifier. Thank you Fosi. If audio sound quality is your primary goal, I highly recommend this unit. ... show more
Reviewed in the United States on July 19, 2024 by Ken

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