Fosi Audio V1.0G 2 Channel Class D Mini Stereo Amplifier for Home Speakers TPA3116 50W x 2 with Power Supply
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Availability:
In Stock.
Arrives
Thursday, Dec 25
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Features
- Fosi Audio V1.0G mini stereo amplifier includes highly efficient, fully integrated, digital, class D audio amplifier ICs based on NEW amplifier technology, supporting a supply voltage range from 12 V to 24 V, allowing it to be used across home and professional audio applications
- V1.0G 2-channel class D amplifier adopts Texas Instruments TPA3116D2 chip. The TPA3116D2 is a stereo-efficient and digital amplifier power stage for driving speakers, with an advanced oscillator/PLL circuit that employs multiple switching frequency options to avoid AM interferences. High performance effectively improves output power and audio quality
- Advanced circuitry design, built-in speakers protection circuit, solid aluminum chassis, the home Hi-Fi integrated amplifier create clear and clarity sound, no audible noise, dead silent when nothing is playing through it
- V1.0G stereo audio amplifier with very low power loss under all operating conditions. The ultrahigh power efficiency and cool operation make the V1.0G suitable for use in home audio systems
- What You Get: V1.0G home integrated amplifier x1, power adapter x1, AC cord x1, user manual x1
Item dimensions L x W x H: 5 x 3 x 1 inches
Voltage: 230 Volts
Manufacturer: Fosi Audio
Maximum Supply Voltage: 19 Volts
Mounting Type: Surface Mount
Item dimensions L x W x H: 5 x 3 x 1 inches
Voltage: 230 Volts
Manufacturer: Fosi Audio
Maximum Supply Voltage: 19 Volts
Mounting Type: Surface Mount
Brand: Fosi Audio
Number of Channels: 2
Output Power: 5E+1 Watts
Package Type Name: box" or "retail packaging
Specification Met: FCC
UPC: 653472995246
Product Dimensions: 5 x 3 x 1 inches
Item Weight: 1.69 pounds
Item model number: V1.0G
Is Discontinued By Manufacturer: No
Date First Available: March 27, 2017
Language: English
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Dec 25
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
AN UPDATE: I liked this tiny amplifier so much that I bought a second one for my office computer. Previously, my main computer used a Lepai LP-2020A+ driving a set of decent bookshelf speakers, and my office computer used a set of cheap USB active speakers. Later I bought the first Fosi to replace the Lepai on my main computer system, and it worked out beautifully (see the ORIGINAL REVIEW below). I decided I would use the Lepai on my office computer, and for that, I bought a set of Polk Audio T15, which are probably the cheapest slightly "serious" bookshelf speakers but should be far better than those cheap USB speakers. But within minutes of setting up the system, I felt terrible. It's not that the Lepai LP-2020A+ with the Polk Audio sounded worse than the cheap USB speakers. On the contrary, they were noticeably better. The trouble was that I started to compare the office sound with my main computer system sound, and I just couldn't help it. This is what happens when you get into a better system. It spoils you. On the office system with Lepai, everything sounded so hollow and distorted, especially the vocals and human voice recordings (not singing), which was so bad that I couldn't stand. It was painful. At first I thought it might be the Polk Audio T15s, but then I suspected it was something else, including the built-in line output, etc. Speculating all kinds of diagnostic possibilities was driving me crazy. Finally, I just gave in and bought a second Fosi, with a good DAC, planning to return the Polk Audio T15s for something better as well. Well, the Fosi and DAC came in, and I connected them to the computer and the Polk Audio T15s. What an improvement! Clearly, the Polk Audio T15s are fine (although not great). The culprit was the Lepai LP-2020A+ amplifier, as the Fosi made a huge difference. The following is the original review I wrote after about the first Fosi: ORIGINAL REVIEW: Unbelievable value for a small desktop setup or computer sound system. Everything is perfect. The sound, the functions, the build quality, and the appearance. This replaced my seven-year-old Lepai LP-2020A+, which actually had quite good sound on my computer sound system as well, but left me wanting a bit more. One of the obvious issues with Lepai was the highly noticeable noise floor when the volume is turned past 50%. Although I seldom turn the volume past 50%, the limitation is bothersome. After seeing some reviews on the TI TPA3116D2 chip, I decided to upgrade, to just give me a bit more peace of mind. And I am very satisfied. The Fosi sounds great. To be honest, I did not do a side-by-side comparison with the Lepai, but I am pretty sure Fosi delivers cleaner and fuller sound. The noise floor is much lower. It is quite low even if you turn the volume all the way up to the maximum. On my desktop speakers, I can hear no noise when the volume is below 30%. Once it passes the 30% level, the noise floor steps up abruptly, but strangely enough, it stays quite flat after that and does not further increase too much even if you turn the volume all the way to 100%. Even at the maximum level, the noise is only slightly noticeable when I sit about five feet away from the speakers. This is a near-field environment, and I'm fairly picky about the noise, but still, this is completely manageable. A day-and-night difference compared to Lepai LP-2020A+. Fosi comes with a rather large power supply, which may seem unnecessarily large, but is necessary for its 50W x2 power rating. When it comes to power, you simply don't have any way to cheat. For example, having a 30 W power supply for 50 W x2 = 100 W amplifier will inevitably lead to insufficient amplification and distortion at higher volumes. Also, the fact that Fosi has five-way binder posts for speaker connectors is a plus, much better than Lepai's primitive clippers. I did hesitate in choosing between the Fosi (this unit) and Micca OriGain A250 or OriGain AD250. OriGain A250 is $20 more expensive, not a lot in the dollar amount, but one-third (33%) more in relative terms, which becomes a matter of principle, if not affordability. Still, I almost got OriGain A250 instead of Fosi V1.0 because the A250 has slightly better user review ranking, and I desired peace of mind. But then I saw reviews that mentioned OriGain A250's having heavy bias on the left channel at low volume level. That bothered me as I usually listen to background music at quite low volume levels. OriGain AD250 had its own attractions because it had a built-in ADC and USB sound input. However, in the end, I decided not to go that route because integrating ADC may appear convenient now but could be an invitation for trouble further down the road. What if the built-in ADC develops problems? (I did see one reviewer mentioning OriGain AD250's built-in ADC has a signal synchronization problem). Or what if you want to upgrade ADC? Etc. Anyway, I'm glad I settled on the Fosi. It leaves me wanting nothing more for my computer-based desktop system.
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Reviewed in the United States on November 10, 2018 by Gao Atamazon
Took a gamble on a brand not well known in audio and for $50 my gamble was well worth it! I use it as an amplifier from my vinyl record player to my two bookshelf speakers, and i couldn’t have been more impressed with the ease of use and sound quality i got from it. As I’m relatively new to vinyl listening, I needed something small that went from rca to speaker wire, and I didn’t really care for all the bass treble stuff. As cool as it would be in the future, more moving parts leads to more ways to failure. So i fell on this little guy. Very solid and not cheap feeling, and nice rubber feet on the bottom to keep it from sliding around. Volume knob and the on and off switch feel nice. The speaker wire outputs support banana plugs, which is a nice to have. Theres not a lot to say about it besides that it works wonderfully at the moment, hopefully time proves to be fruitful.
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Reviewed in the United States on June 18, 2023 by Nicholas M.
Initially, I didn't want to spend more than $20 on an amp that replaces my broken Logitech desktop sound system. A cheap TPA 3116 based amp should be able to drive a pair of old Quadral speakers (not very efficient) that I had stowed away for a long time. I first tried a DAJUNGUO brand amp that claims 100W and has Bluetooth. Despite good reviews on amazon, there was a noticeable hiss when the amp was idle. It didn't go away when placed in different spots and used different power supplies. I then ordered an XH-A305 2.1 Bluetooth equipped amp, also TPA3116 D2 based. I used that before and was happy with it. But it had the same issues. Hiss, especially when directly connected through RCA jacks. I tried three power supplies, nothing changed. Then I caved and bought the Fosi. This doesn't have Bluetooth, so no interference possible. There is no hiss whatsoever, the sound is great, and despite the low efficiency of my speakers, I can drive them louder than I would ever need. Overall, this is great value for money, and beyond the sound, it looks much better than the other amps that needed to be hidden.
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Reviewed in the United States on September 24, 2025 by Justus J. Justus J.