Swansea boss Michael Laudrup brought in eight new faces in the summer to add depth to his squad as they have to cope with the demands of the Europa League this term.
Michu has been impressed by the new signings at the Liberty Stadium and believes the side are stronger this season as a result.
"I think our signings this summer were very good," Michu told the club's official website. "We are stronger this year.
"Everybody is speaking Spanish in changing rooms now! Michael (Laudrup) knows these players, but I'm very happy, not only with the Spanish signings, but with all the signings this summer.
"When you play with high quality players, it's easy to play. They help you a lot."