Fosi Audio TP-02 Mono Subwoofer Amplifier
- 220W maximum output, mono
- 30Hz to 260Hz adjustable low-pass knob
- TDA7498E amp chip, NE5532 op-amp
- SNR 98dB or higher, THD 0.04% or lower
- 775mV input sensitivity
- 24V power adapter included
- 5 x 3 x 1 in, aluminum case
- 18-month manufacturer warranty
Last refreshed Jun 20, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact mono amp for driving a passive subwoofer or bass shaker in a desk or TV setup, with crossover and volume knobs. Speaker impedance is not listed, so match your sub carefully.
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ASIN: B07L6FN97ZModel: TP-02Category: Stereo Amplifiers
Overview
Driving a passive subwoofer or bass shaker is the job of this Fosi Audio mono amplifier. Feed it a line signal, set the low-pass knob near where your main speakers roll off, and adjust volume; the built-in filter strips higher frequencies first.
Small size and a real crossover control make it an easy way to add bass to a desktop or bedroom system. The listing never states the speaker impedance or the power at a given load, so the headline power figure is a ceiling, not a promise.
Who it's for
Gamers, movie watchers and music listeners adding a passive sub or bass shakers to a compact system. Owners of large home theater subs who need rated power at a set load should look for fuller specs.
Pros and cons
- Adjustable low-pass crossover knob
- Speaker protection, no pop on startup
- Compact aluminum case
- Power adapter included
- Speaker impedance not listed
- Single mono channel only
- External power brick on the desk
Performance notes
Bass output depends on the subwoofer's efficiency and impedance, which govern how much of the amp's power it actually draws. The low-pass knob sets where the sub takes over from the main speakers, so tuning it to the room avoids a boomy overlap. An op-amp front end handles the line signal before the amp chip drives the sub.
Specifications
| Brand | Fosi Audio |
|---|---|
| Model | TP-02 |
| Dimensions & fit | |
| Item dimensions | 5 x 3 x 1 inches |
| Capacity & performance | |
| Maximum Output Power | 220 watts |
| Signal to noise ratio | 98dB or higher |
| Power & efficiency | |
| Minimum Supply Voltage | 24 Volts (DC) |
| Construction & materials | |
| Material Type | Aluminum |
| Included components | |
| Included Components | Amplifier, 24V power adapter, user manual |
| Warranty & support | |
| Warranty Description | 18-month manufacturer |
| Other details | |
| Number of Channels | 1 (mono) |
| Low pass filter | 30Hz to 260Hz, adjustable |
| Specification Met | FCC |
| Total harmonic distortion | 0.04% or lower |
| Amplifier chip | TDA7498E |
| Input sensitivity | 775mV |
| Op amps | NE5532 |
| Frequency Response | 20 Hz to 250kHz |
Frequently asked questions
Can the Fosi Audio TP-02 work with a powered subwoofer?
The listing says it can connect to a powered and a passive subwoofer, but it gives no detail on wiring a powered sub. Its main role is driving a passive sub or bass shaker.
Does the Fosi Audio TP-02 pop when switched on?
The listing says no pop, with a built-in speaker protection circuit, and silent when not in use.