While the S1 headphones come in a cheaper plastic housing, the S2 set is clad in metal and Inner Fidelity says it "boasts a fancy-looking glossy finish." Another plus for the design is the use of a flat cable over traditional round or braided cables, which Expert Reviews says helps to keep "cable noise to a minimum, even when jogging or at the gym."
Bundled with the Fidelio S2 is a pair of Comply foam tips, designed to give you a better fit by conforming to your ear. But even with the range of tips What Hi-Fi had problems "getting a decent fit." However, once the right fit is you can enjoy the sound isolation that TrustedReviews says "isn't fantastic, but can handle most public transport."
More than the design, performance is an important part of the Fidelio branding and in that aspect, the S2 headphones don't disappoint. Inner Fidelity says they "sound clear and accurate" and have "just the right about amount of bass kick," which a lot of headphones seem to miss, and TrustedReviews says they offer "excellent sound tuning." But to get what Expert Reviews calls "superb audio," finding the right fit is key.
For its first Fidelio-branded in-ear headphones, Philips ticks the right boxes and keeps the critics happy. The S2 headphones aren't the best of the bunch, but they still have a lot to offer. You just need to find them at the right price.