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Complete technical specifications for the Fosi Audio BT20A Pro stereo power amplifier. Class D 2.0 channel amplifier with Bluetooth 5.0, aptX, and multiple analog inputs. Source: Fosi Audio official page.
Overall Rating: 8.5/10 — Exceptional Class D power and Bluetooth at $100. Best entry-point for passive desktop speakers.
Full Specifications
| Amplifier Class | Class D |
| Channels | 2.0 stereo |
| Peak Output Power | 300W (150W x 2) |
| RMS Output Power | ~100W (50W x 2 at 4 ohm) |
| Speaker Impedance | 4-8 ohm |
| Bluetooth Version | 5.0 |
| Bluetooth Codecs | aptX, AAC, SBC |
| Inputs | Bluetooth, 3.5mm AUX, RCA stereo |
| Volume Control | Front-panel rotary knob |
| Power | DC 32V adapter (included) |
Where to Buy
The Fosi Audio BT20A Pro 300W Continuous Power 2.0 Channel Audio Power Amplifier is a compact and versatile solution for enhancing your home stereo system. Powered by the TI TPA3255 chip, it delivers 300 watts x 2 of efficient, high-quality audio with low idle loss. Featuring Bluetooth...
