Choosing audiophile over-ear headphones often comes down to one practical trade-off: do you want an open presentation aimed at clarity and detail, or a more contained listening experience? The Drop + HIFIMAN HE-5XX Open Back Planar Magnetic Headphones - Used With Box makes a clear case for the former, with a USD 75.00 price, 3.5mm jack connectivity, and a design positioned for audiophile and studio-monitoring use.
Quick verdict
The HE-5XX is a sensible fit for listeners who specifically want open-back planar magnetic headphones and can use them in an environment where sound reaches the room. Its strongest appeal is the combination of the open-back format, planar magnetic design, and straightforward 3.5mm connection. The main limitation is equally clear: the used condition and open design make it less suited to shoppers seeking a private, sealed-off listening setup.
Drop + HIFIMAN HE-5XX Open Back Planar Magnetic Headphones - Used With Box

The reason to choose this set is its focused feature combination. The title identifies both open-back construction and planar magnetic headphones, while the description emphasizes sound clarity and detail for audio professionals and audiophiles. The 3.5mm jack also gives it a familiar connection format for compatible listening equipment, and the black headband design keeps the presentation visually simple.
The limitation is the listening environment it implies. Because the open-back design provides sound to both the listener and the environment, it is not the natural choice for quiet shared spaces or anyone who wants sound kept close to the ears. The used condition is another concrete consideration, even though the product is described as coming with its box.
Who it suits
This model makes the most sense for an audiophile who wants an open-back listening experience for music or studio monitoring. The planar magnetic label and focus on clarity and detail point toward a shopper prioritizing the character of the headphone design over isolation. The 3.5mm jack suits a setup built around that connection, including the wide range of devices referenced in the product description.
It is less compelling for commuting, office use, or shared-room listening where sound carried into the environment could be disruptive. That is not a defect in the format; it is the central decision attached to choosing open-back headphones.
What stands out
The HE-5XX keeps its proposition specific rather than adding a long list of extras: open-back construction, planar magnetic drivers, double earpieces, a headband form factor, and studio-monitoring suitability. That combination gives the set a clear identity for listeners who want an audiophile-oriented headphone rather than a general-purpose sealed model.
The USD 75.00 price also gives the decision a defined starting point, but the used condition should remain part of the purchase calculation. The included box adds a concrete accessory detail without changing the central trade-off between open sound and environmental leakage.
Bottom line
Choose the Drop + HIFIMAN HE-5XX if open-back planar magnetic headphones, 3.5mm connectivity, and a studio-monitoring focus match your listening setup. Pass on it if you need isolation or prefer a new-condition purchase. For the right quiet-room use case, its listed features are unusually focused for a USD 75.00 headphone set.