Fosi Audio BT30D Pro
- 9 reviews
- Fosi Audio
Fosi Audio BT30D Pro
- 9 reviews
- Fosi Audio
$133.19
- Authorized Dealer · Tech Support · 30-Day Returns
Why it stands out
Best for
Not ideal for
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Setup guide
How to connect
What you should know
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Frequently asked questions
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Official product information provided by Fosi Audio
The following product descriptions, specifications and images are provided by the manufacturer.
Fosi Audio BT30D Pro is a TPA3255-based 2.1-channel Bluetooth integrated amplifier for passive stereo speakers and passive or powered subwoofers.
High-output Class-D amplification, separate bass controls and flexible subwoofer connections make it a compact control center for a powerful 2.1 system.
Why it stands out
High-output 2.1 amplification
Dedicated stereo and subwoofer channels provide up to 165 W × 2 plus 350 W maximum at 4 Ω.
Flexible subwoofer support
Connect a passive subwoofer from the amplified output or powered equipment from the 3.5 mm full-range line output.
Independent system tuning
Master volume, bass, treble, subwoofer volume and subwoofer frequency controls support practical room integration.
Bluetooth and RCA inputs
Works with wireless mobile sources or conventional analog line-level equipment.
Best for
- Higher-output compact 2.1 systems
- Passive bookshelf or floor-standing speakers
- Passive or powered subwoofer integration
- Desktop, living-room and small TV systems with analog audio
Not ideal for
- Systems requiring HDMI ARC, optical or USB inputs
- Users needing a headphone output
- Turntables without a phono preamplifier
EMiUZEK Buying Notes
- The advertised 165 W × 2 + 350 W figures are maximum ratings at 4 Ω and depend on the power supply and load.
- The 3.5 mm output is full-range; powered subwoofers should use their own crossover where required.
- Bluetooth has priority over RCA, so disconnect Bluetooth to return to the wired input.
Frequently asked questions
Can it power passive speakers and a passive subwoofer?
Yes. It provides amplified outputs for both.
Can it connect to a powered subwoofer?
Yes, using the 3.5 mm full-range output and the powered subwoofer's compatible input.
Can it operate as a 2.0 amplifier?
Yes. A subwoofer is optional.
Does it support aptX?
No. The official instructions state that aptX, aptX HD and aptX Low Latency are not supported.
Can it connect directly to a turntable?
Only if the turntable provides line-level output; otherwise add a phono preamplifier.
Can it connect to a TV?
Yes when the TV has compatible analog output. It does not have HDMI ARC or optical input.
HOW TO CONNECT
High-output passive 2.1 system
Source icon: streamer
Source: Streamer / DAC / phone
Connection: RCA or Bluetooth
Output connection: Stereo speaker terminals + passive subwoofer terminals
Target icon: speakers
Output: Passive speakers + passive subwoofer
Powered subwoofer system
Source icon: TV
Source: TV analog output / DAC
Connection: RCA
Output connection: Stereo speaker terminals + 3.5 mm full-range output
Target icon: speakers
Output: Passive speakers + powered subwoofer
Passive 2.0 stereo system
Source icon: streamer
Source: Streamer / DAC / phone
Connection: RCA or Bluetooth
Output connection: Stereo speaker terminals
Target icon: speakers
Output: Two passive speakers
Note: A subwoofer is optional; leave the subwoofer outputs unused for a 2.0 system.
Technical Specifications
Inputs
| Feature | Specification |
|---|---|
| Bluetooth 5.0 | Included |
| RCA line input | Included |
Outputs
| Feature | Specification |
|---|---|
| Stereo passive-speaker output | Included |
| Passive-subwoofer speaker output | Included |
| 3.5 mm full-range line output | Included |
Amplification
| Feature | Specification |
|---|---|
| Amplifier Chip | TI TPA3255 |
| Maximum Output | 165 W × 2 + 350 W at 4 Ω |
| Speaker Impedance | 2–8 Ω |
| Frequency Response | 20 Hz–20 kHz (±1 dB) |
| THD | ≤0.04% |
| SNR | ≥108 dB |
| Input Sensitivity | 700 mV |
| Passive Subwoofer Frequency Adjustment | up to 300 Hz |
Connectivity and power
| Feature | Specification |
|---|---|
| Bluetooth Range | up to 50 ft without obstacles |
| DC Input Range | 12–36 V |
| Power Adapter | dependent on selected variant |
Additional Product Content
Comparison: BT30D or BT30D Pro?
| Feature | BT30D | BT30D Pro |
|---|---|---|
| Amplifier architecture | 2 × TPA3116D2 | TPA3255 |
| Maximum output | 50 W × 2 + 100 W | 165 W × 2 + 350 W at 4 Ω |
| DC input range | Supplied 24 V / 4.5 A | 12–36 V |
| Best use | Compact moderate-output 2.1 | Higher-output 2.1 systems |
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