Powerful Multichannel Amp for Your Home Theater or Music Setup!
The Fosi Audio HT4S gives you both flexibility and high-quality sound: choose between a 5.0 configuration (five speakers) or a 4.1 setup (four speakers + subwoofer) — perfect for home theater, music, or gaming. With Bluetooth 5.0, AUX and optical input, you’re ready for modern audio sources.
Multichannel Operation with Switching
Use the small switch on the underside to choose between the "5.0 (Center/Flat)" and "4.1 (SUB)" modes. In 5.0 mode the unit delivers five channels of about 30 W each at 4 ohms. In 4.1 mode four channels deliver about 30 W each plus one channel at about 60 W.
Quality and Features
The Class-D design with two TI TPA3116 chips provides efficient operation and clear playback. The frequency response from 20 Hz to 20 kHz and low distortion guarantee clean sound. Its compact construction and versatile inputs make the HT4S an elegant solution when space is tight or a discreet unit is desired.
Modern Controls & Versatile Connectivity
Bluetooth streaming, 3.5 mm AUX and optical input make the unit an all-in-one solution. Additionally, there’s a 3.5 mm pre-out so you can connect an active subwoofer or expand your system later. A colored LED strip on the front panel shows the active input — blue for Bluetooth, orange for AUX, red for optical.
This makes your setup future-proof, versatile and powerful-sounding. Grab the HT4S and experience high-quality sound.
Make Your Home Theater or Music System Finally Complete!
Features
- Channel modes: 5.0 or 4.1 (switch on the bottom)
- Power in 5.0 mode: 5 x 30 W at 4 ohms
- Power in 4.1 mode: 4 x 30 W + 1 x 60 W at 4 ohms
- Recommended speaker impedance: 4-8 ohms
- Colored LED indicator for input selection
- Inputs: Bluetooth 5.0, 3.5 mm AUX, optical input (Toslink)
- Output: 3.5 mm Pre-Out for active subwoofer
- THD: ≤ 0.03 %
- SNR: ≥ 88 dB
- Frequency response: 20 Hz-20 kHz
- Operating voltage: AC 110-240 V
- Dimensions: approx. 284 x 178 x 100 mm
- Weight: approx. 1.8 kg
- Remote control included
Scope of delivery
- 1 x Fosi Audio HT4S Amplifier
- 1 x Bluetooth antenna
- 1 x Power cable
- 1 x 3.5 mm jack cable
- 1 x Remote control
Suitable accessories (Not included in the delivery.)
Specification
- Product number 00116363
- Power (Watts) 180
- Outputs 3.5mm Stereo-Klinke, Klemmanschlüsse für Lautsprecher
- Inputs 3.5mm Stereo-Klinke, Bluetooth, Optisch
- Colour Black
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Financing
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 10,82 € per month
- More information on financing
| 3 Year warranty | |
| 30 Day Money Back | |
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| Monday | 09:30 - 18:00 | |
| Tuesday | 09:30 - 18:00 | |
| Wednesday | 09:30 - 18:00 | |
| Thursday | Closed |
Different opening times |
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| Saturday | 09:30 - 13:30 |



