Description
What the Koss Porta Pro Limited Edition Is
The Koss Porta Pro is one of the longest running headphone designs still in production, and this limited edition version puts it in a Rhythm Beige finish with an inline microphone, volume control and remote on the cable. The listing gives a 3.5 mm plug, wired connectivity, a dynamic driver, a frequency range of 15 Hz to 25,000 Hz, plastic construction and a protective hard case in the box. Koss Stereophones is listed as the manufacturer, the model number is 193053, and this edition first became available in December 2016.
The design itself dates to the 1980s and has barely changed, which is the point. A collapsible steel headband, foam pads, and a pair of small drivers sitting on the ear rather than around it. The audience is a listener who wants something light, foldable and characterful for casual use rather than something that seals out the world. Readers who like this approach and want to stay in the same family should compare the Koss KPH7 and the Koss KSC35, both of which share the brand’s minimal, open, lightweight philosophy.
On-Ear, Open Design and What That Means
The Porta Pro is a supra-aural design, meaning the pads rest on the outer ear rather than enclosing it, and the earcups are open at the back. Noise Control is listed as None, which is accurate and important. Sound passes freely in both directions: outside noise reaches the listener, and music leaks out to anyone nearby. On a quiet street or at a desk at home that is fine and arguably preferable, because it keeps the wearer aware of what is happening around them. On a train, in an open plan office or in a library it is a problem.
The open back has a genuine acoustic consequence too. Without a sealed chamber, low frequencies escape rather than pressurizing the ear, so an open on-ear design has a different bass character from a sealed one. What it gains is a less closed in presentation, since there is no small sealed volume creating reflections. Listeners who need isolation should look at a closed design instead, and the Califone 3068AV covers a rugged closed on-ear built for a different purpose entirely.
The Inline Remote and Practical Controls
The feature that separates this edition from the plain Porta Pro is the cable. Koss lists an inline microphone, a volume control and a remote, which turns a purely passive listening headphone into something usable for phone calls and video meetings. The Control Type field records remote control and volume control, and Controller Type is given as a wired remote control. On a headphone this light and this cheap, an inline remote is a meaningful upgrade in daily convenience.
Comfort adjustments are part of the original design rather than the limited edition. The Porta Pro uses a sliding headband with adjustable temporal pads that rest against the side of the head and set how firmly the earcups press. That system lets a wearer tune clamping force rather than accept whatever the manufacturer chose, which is unusual at any price. Buyers who want a wired earbud alternative in the same casual, low cost territory can look at the JVC Gumy.
Portability, Case and Durability
The headband folds flat and the earcups collapse inward, which is why this design has survived so long as a bag headphone. Koss includes a hard carry case in this edition, which matters for a folding headphone since the hinges are the part most likely to be damaged loose in a bag. Material is listed as plastic, though the headband on this design has traditionally been steel, and the listing does not break out the materials by part.
Koss has historically offered a long warranty on its headphone line, and the listing shows the product as not discontinued, which is a useful signal for a design this old. What the listing does not state is the impedance, the driver size or the cable length, all of which affect how the headphone behaves with a given source. The stated 15 Hz to 25,000 Hz range carries no tolerance figure, so it describes measurable output limits rather than tonal balance. Readers comparing across the wider on-ear headphones selection will find both sealed and open alternatives at a similar level.
Highlights
- Inline microphone, volume control and remote built into the cable.
- Collapsible headband design with a hard carry case included.
- Adjustable temporal pads let the wearer set clamping force.
- Listed frequency range of 15 Hz to 25,000 Hz.
- Limited edition Rhythm Beige colorway with a 3.5 mm plug.
- Carries a 4.4 star rating across 2,052 ratings on the source listing.
Things To Consider
Several fields in the specification block do not match the product. Earpiece Shape is listed as Over-ear cup, while this is an on-ear design and the listing title says so. Cable Feature is listed as Retractable, which the Porta Pro cable is not. Control Method is given as Touch, when the controls are physical buttons on an inline remote, and the same sheet correctly records a wired remote elsewhere. Item Weight is given as 15.5 ounces, which is far heavier than a headphone of this size could be and almost certainly describes the shipping package, consistent with the separate package dimensions of 7.36 x 6.3 x 3.03 inches. Carrying Case Color is recorded as Rhythm Beige, which is the color of the headphone rather than the case.
The real limitations are all consequences of the design rather than faults. There is no isolation, so this is a poor choice for commuting or a shared office, and the leakage means people nearby will hear the music. The foam pads wear out and need periodic replacement, which is normal for the design and cheap to do. On-ear pressure suits some heads and not others, and there is no way to know which without trying. The cable is not detachable, so a cable failure ends the headphone unless it is repaired. And with a design this old, buyers should be aware that comfort and sound both reflect 1980s priorities rather than current ones.
Who Should Buy It, and Who Should Not
This suits a listener who wants something light and packable for walking, home listening or a desk, who likes the look, and who values the inline remote for calls. It is also a sensible second headphone to keep in a bag where an expensive pair would be at risk.
It does not suit air travel, open offices, gyms or anywhere isolation matters, and it does not suit a listener who wants a detachable cable or a modern sealed fit. Buyers who need quiet should look at a closed or noise canceling model instead, and can start from the over-ear headphones category to compare.
