volume_upBoosts volume on weak sourcesNotableexpand_more0 mentions
Users say the E5 substantially raises volume on low-output devices, especially EU volume-restricted iPods. One user confirmed the jump using an A/B test with a quiet video, and another says the volume increase alone is great even if unsure about other qualities.
Strongly positive
headphonesWorks well with easy-to-drive/low-impedance headphonesNotableexpand_more0 mentions
Commenters had good results pairing the E5 with Grado SR60i, AKG headphones, and 80ohm beyerdynamic DT770s, and note it works best with single IEM buds.
Widely praised
graphic_eqImproves clarity of mids and highsexpand_more0 mentions
At least one user reports the amp significantly increases clarity of mid and high frequencies, and another notes it bypasses the iPod's internal amp for a clearer, crisper sound.
Widely praised
attach_moneyCheap and portableexpand_more0 mentions
Buyers highlight the low cost, around $10 or £20, and its small size that makes it easy to carry around.
Widely praised
cableL3 cable pairing enhances the effectexpand_more0 mentions
One user found pairing the E5 with FiiO's L3 line-out cable had a massive positive effect, bypassing the iPod's crappy headphone output and reducing hiss.
Widely praised