Since your speakers have an impedance of 8 ohms, you will need an amplifier that is stable at 8 ohms. The wattage rating of the amplifier should be based on the power handling capacity of your speakers. For example, if your speakers can handle up to 100 watts RMS, you will need an amplifier that can deliver at least 100 watts RMS per channel into 8 ohms.
The size of your room also plays a role in determining the appropriate wattage for your amplifier. A larger room will require more power to fill the space with sound, while a smaller room will require less power. As a general rule of thumb, you can use the following guidelines to determine the appropriate wattage for your amplifier:
* Small room (up to 1,000 cubic feet): 50-100 watts per channel
* Medium room (1,000-2,000 cubic feet): 100-200 watts per channel
* Large room (over 2,000 cubic feet): 200-400 watts per channel
Based on these guidelines, it is likely that you will need an amplifier with a power rating of at least 100 watts RMS per channel into 8 ohms for your Tevion 5.1 surround sound system. However, if you have a very large room, you may need an amplifier with a higher power rating.
It is important to note that the wattage rating of an amplifier is not the only factor that determines how loud your speakers will be. The efficiency of your speakers and the acoustics of your room also play a role. Therefore, it is always best to audition an amplifier with your speakers in your own room before making a purchase.