Tinny (adjective)

1. Having a thin, metallic sound.
2. Lacking in richness or depth.

Origin:

Mid-19th century: of uncertain origin.

Examples:

1. The music from the small speaker was tinny and hard to listen to.
2. His voice was tinny and lacked resonance.
3. The tinny sound of the drums was out of place in the symphony.
4. The tinny sound of the violin was disappointing.
5. The music had a tinny quality to it and it was hard to enjoy.