Fosi Audio TB10D TPA3255 Stereo Amplifier
- 2 channels, TPA3255 class D
- 300W per channel, 600W total listed
- Speakers from 2 to 8 ohms
- Bass and treble knobs
- RCA input, passive speaker outputs
- Protection circuits built in
- 24-month warranty
Last refreshed Jun 20, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A powerful little stereo amp for driving bookshelf speakers or a bass shaker from a PC, TV or turntable preamp. It has RCA input only, so digital and Bluetooth sources need a converter.
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ASIN: B08MJBG53VModel: TB10DCategory: Stereo Amplifiers
Overview
Not an AV receiver, this Fosi is a compact two-channel power amplifier that drives passive speakers from an RCA source. Bass and treble knobs shape the sound, and protection circuits guard against faults.
Lots of power in a desk-sized box lets small amplifiers drive bookshelf speakers with headroom. Inputs are RCA only, with no Bluetooth, optical or phono stage.
Who it's for
Desk listeners, home studio users and gamers adding a bass shaker get a strong two-channel amp with tone controls. Vinyl fans need a separate phono preamp, and wireless users need a Bluetooth receiver.
Pros and cons
- High power for its size
- Bass and treble controls
- Handles low-impedance speakers
- Power switch on the unit
- RCA input only
- No built-in phono stage
- Power supply not listed
Performance notes
Power delivery depends on speaker impedance and the supply feeding the amp, so low-impedance speakers draw more. Tone knobs adjust bass and treble before the class D stage, which runs efficiently and stays cool.
Specifications
| Brand | Fosi Audio |
|---|---|
| Model | TB10D |
| Dimensions & fit | |
| Item weight | 2.42 pounds |
| Capacity & performance | |
| Output Power | 300W per channel, 600W total |
| Compatibility & installation | |
| Connectivity Technology | RCA input, passive speaker outputs |
| Warranty & support | |
| Warranty Description | 24-month manufacturer |
| Other details | |
| Impedance | 2 to 8 ohms |
| Control Type | Bass, treble, power switch |
| Number of Channels | 2 |
| Amplifier chip | TPA3255 |
Frequently asked questions
What comes in the box with the Fosi Audio TB10D?
The listing does not list box contents, including whether a power supply is included. Confirm with the seller.
Can I connect a turntable to the Fosi TB10D?
Only through a phono preamp. The TB10D has RCA input and no built-in phono stage.
What speakers work with the Fosi TB10D?
Passive speakers from 2 to 8 ohms, including bookshelf speakers. It can also drive a bass shaker.