A good slogan shouldn't need much if any explanation. But here is something I learned a long time ago, people buy products because the image of the product defines themselves. Love is based not just on how we feel about a person or object, but how that object makes us feel about ourselves.
Here are some attempts with, begrudgingly, explanations:
Music in the theme of you.
Music in the key of you.
Explanation: each person is already an infinitely complex amalgamation of experiences, opinions, and emotional muscle memory. This slogan emphasizes that the FiiO product range is as adaptable as you are, and that the experience is yours. This slogan would make excellent advertisement copy and naturally leads to commercials that capture all the infinite innovation that FiiO wishes to convey. FiiO is a big enough dog now that they can start pitching directly to the iPod crowd (now phone music users). Commercials may be a worthwhile investment now.
Explore the infinite, FiiO is your soundtrack.
Infinite soundtrack, FiiO brings the fun.
Life is a journey, FiiO is your soundtrack.
Explanation: Just imagine what kind of images you can create with this. I’ll set the scene: we see a pair of jeans (we can’t tell if it’s a guy or girl and it isn’t important). EDM and the person in the jeans dances X7 peaking out the top of the back pocket. Another scene, the sun peaks over the top of a mountain, a symphony plays, X7 is hooked in the mesh of the backpack. Another scene, people talking at a party, it’s too quiet, too civilized. Jeans hooks up the X7, rock music plays, and now the whole room dances.
Innovation in music, infinite possibilities.
Innovation in music, infinite emotion.
Innovation in music, infinite horizons.
Explanation: music isn’t just about fun! Music captures joy, sorrow, love, curiousity, and many more complex and intermingling emotions. Fun can be included in the definition of music, but there is no reason to restrict music to one experience. Just as the user is able to meld their experience with FiiO products to their individual needs, so are they able to use music for whatever they need it to be for them right now. Music has an infinite combination of meanings, on its own, this slogan puts music directly next to infinite in word order. This will make people reflect on the meaning of music and the meaning of infinite and tie them together. The slogan also uses alliteration, which makes it more memorable.
Truncated to just reflect ‘Fun’:
Innovation in music, infinite joy.
And a last one, for now:
Music moves you. FiiO moves music.
Explanation: This captures the general theme I’m on. Music is a personal experience, music is already infinite. This slogan uses the transitive property, Fiio moves music, music moves you, therefore FiiO moves you. The sentences are also constructed in parallel, which makes them more memorable and leads the reader to the conclusion that FiiO moves you through music.
I'll have more.
Edited: this was typed up in a word document and pasted in. The forum didn't like arrows so I fixed the sentence. I also missed an 'a' in 'life is a journey.'