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Compact silver aluminium stereo amplifier with bass and treble knobs, power switch and speaker terminals

Fosi Audio

Fosi Audio TB10A 2.0ch stereo amplifier 100W x 2

SKU CH-CRDP-YB762

Compact Class D stereo amplifier delivers 100W per channel into 4 ohms with bass and treble controls and a 24V power supply included

  • Product typeAmplifiers
  • 100 W per channel drives 200–300 W speakers
  • 04 % THD keeps music clean and detailed
  • Bass and treble controls shape sound to taste
  • Compact aluminium chassis fits desktop or shelf
  • 24 V supply included for instant setup

Compact desktop amplifier

The Fosi Audio TB10A is a 2.0-channel Class D stereo amplifier rated at 100W per channel into 4 ohms. It targets listeners who want a simple, integrated amp for bookshelf speakers on a desk or in a small room. The unit accepts analogue input only and ships with a 24V power supply, AC cord and manual. No software or configuration is required.

Aluminium chassis and analogue connectivity

A sturdy, lightweight aluminium enclosure houses the TPA3116 chipset and provides a clean, pop-free start-up. Speaker terminals accept loads from 2 to 8 ohms, supporting passive speakers rated up to 300W at 4 ohms or 200W at 8 ohms. Rear-panel bass and treble controls allow quick tonal adjustment without external EQ. The only inputs are analogue RCA, so a source with a line-level output is necessary.

Thermal behaviour and power draw

The amplifier operates from a 15–24V supply with an RMS consumption range of 90–120W. Total harmonic distortion is specified at 0.04% at rated power, with a signal-to-noise ratio of 98dB. Frequency response covers 20Hz–20kHz within 1dB. The aluminium case acts as a heatsink, keeping the unit silent when idle and cool during typical listening sessions.

How it compares

Measured against everything we stock in Pro Audio Equipment, at today’s prices. Recalculated every night.

Price $128.99
Pricier than about 69% of the 613 comparable items (median $56.99).

Specifications

Product
Product typeAmplifiers

Questions about this item

What analog input sensitivity does the TB10A require for full output?

The analog input sensitivity is 280 mV, so a typical line-level source will drive the amplifier to its rated 100 W per channel without additional gain.

What speaker impedance range can the TB10A safely drive?

The amplifier is rated for terminating impedances from 2 Ω to 8 Ω, allowing use with most bookshelf and floor-standing speakers within that range.

In which order should the power cord be connected to avoid a turn-on pop?

Plug the power cord into the amplifier first, then into the wall outlet; this sequence prevents the audible pop that can occur if the wall is connected first.

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