Amazon.com offers the Logitech Ultimate Ears SuperFi 4 Noise-Isolating Earphones, model no. IP-P4SSA0001-02, for $39.99. With free shipping, that’s $10 under our April mention and the lowest total price we’ve ever seen for these headphones. (It’s also a current price low by $45.) These headphones feature a frequency response of 20Hz to 15kHz, three sizes of silicone eartips, two pairs of memory foam eartips, 3.5mm plug, and more.
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