Fosi Audio TB10D is a compact analog stereo power amplifier for driving passive speakers from a line-level source.

Its TI TPA3255 power stage, 300W x2 maximum rating and front bass/treble controls deliver strong value for simple, adjustable HiFi systems.

Why it stands out

Four reasons this product deserves a place in a well-planned audio system.

TPA3255 Amplification

Texas Instruments Class D architecture provides high efficiency and substantial power from a compact chassis.

300W x2 Maximum Rating

The amplifier offers useful headroom for compatible 2–8Ω passive speakers; real output depends on the supply and speaker load.

Front Tone Controls

Dedicated bass and treble knobs allow quick adjustment without an app or external equalizer.

Straightforward Analog System

One RCA input and speaker outputs keep setup simple for users who already own a DAC, streamer or preamp.

Best for

• Budget-focused passive-speaker systems
• Users who want physical bass and treble adjustment
• Desktop and small-room stereo systems
• Pairing with an existing DAC, streamer or preamp

Not ideal for

• Users requiring Bluetooth, USB, optical or HDMI inputs
• Balanced XLR systems
• Headphone listening
• Systems requiring a dedicated subwoofer or preamplifier output

EMiUZEK Buying Notes

• TB10D is an analog speaker amplifier; it requires a separate line-level source.
• The 300W x2 figure is a maximum rating under specific conditions, not continuous output with every power supply and speaker.
• It has no headphone, Bluetooth or dedicated subwoofer output.

Frequently Asked Questions

Can the TB10D drive passive speakers directly?

Yes. It supports compatible 2–8Ω passive speakers.

Does it include Bluetooth?

No. Add a Bluetooth receiver or streamer to the RCA input if wireless playback is needed.

Can I connect a turntable?

Only through a turntable with built-in phono output or a separate phono preamplifier.

Does it have a subwoofer output?

No dedicated subwoofer or pre-out is provided.

Can I use a DAC or network streamer?

Yes. Connect its analog line output to the TB10D RCA input.

What does 300W x2 mean?

It is the specified maximum output under particular supply and load conditions; usable continuous power varies with the system.

HOW TO CONNECT

DAC stereo system

Source: Computer / digital source
Connection: USB or digital to DAC; RCA from DAC
Output: Speaker terminals
Target: Passive speakers
Note: Set the DAC to line or controlled output as appropriate.

Network streaming system

Source: Network streamer
Connection: RCA line output
Output: Speaker terminals
Target: Passive speakers
Note: Use the streamer for source selection and playback.

TV stereo system

Source: Television
Connection: Optical/HDMI to external DAC; RCA to TB10D
Output: Speaker terminals
Target: Passive speakers
Note: TB10D does not accept TV digital audio directly.

Technical Specifications

Amplifier

Audio

Connectivity and Power

Recommended System Setup

Additional Product Content