Can I use amplifier without speakers?

Could you clarify for me, are you asking if it's possible to use an amplifier without speakers attached, or if the amplifier itself functions as a speaker? It's important to note that an amplifier's primary function is to boost the signal strength of an audio source, such as a microphone or a music player, before it reaches the speakers. Without speakers, the amplified sound would have nowhere to be output and thus, you wouldn't be able to hear it. So, in short, no, you can't use an amplifier without speakers if your goal is to produce audible sound. However, if you're simply looking to boost the signal for a different purpose, such as sending it to a recording device, then it's possible to use an amplifier without speakers.