Sure.
Before:
After:
General Comments:
I like how they look with the KSC-75 drivers, the grey/silver accents give the sportapro an additional layer of interesting contrasting colour. Aesthetic improvement there for sure.
Test Method:
Since the intended purpose of this test was to be a quick comparison, the KSC-75 drivers were compared to the KSC-35 drivers out of the iPhone 4S at a matched volume output (exactly the same).
The combinations tested are:
SportaPro Stock (KSC-35 drivers)
SportaPro with KSC-75 drivers
KSC-75 Stock
SportaPro Stock
Out of the box, they remind me of the Heir Audio 8.A. Mind you, the technical capability of the 8.A. is some orders of magnitude higher, such as detail retrieval and general speed. However the treble presentation is very similar. We have the "speakers behind you" approach where there is not enough treble sharpness and certain instruments do not sound natural and true to life (e.g. cymbals and the "ss" in voices). The KSC-35 drivers do however, shine with an upfront and live midrange and strong bass for the driver size. The bass quantity and low end attack are quite commendable, and moreso compared to the KSC-75 with sportapro headband and KSC-75 stock. However, the bass has got a bit of a flab to it (boom) and is not as tight and clean compared to the KSC-75.
KSC-75 Stock
I have owned the KSC-75 previously for over a decade until they decided to give up on me this year. So I had purchased another set for the love of my first real experience into high-"er" quality sound. The differences between the classic KSC-75 and the new one are mainly in the plug which has gone from being angled to a straight plug. The rest remains the same thankfully. In terms of the sound, its the good old KSC-75 sound we all love, bright, upfront mids, strong low end attack, clean bass quantity, sharp but relatively tame treble. As a classic, I don't need to review the sound in-depth, but the sound is enjoyable having bent the clips for a tighter fit.
SportaPro with KSC-75 Drivers
It definately sounds like a refined stock SportaPro. The key differences are the cleaner overall presentation. Tighter bass, with crisp treble are the defining attributes. I had also noted more natural tonality in voices. Compared to the stock KSC-75, the headband adds a magnitude higher (I can't quantify this with numbers lol) amount of bass quantity (still slightly less than KSC-35 drivers) and improves the attack transients. The additional pressure of the drivers to the ears appears to be responsible for this. In addition, there is an improved sense of ambience. Airyness remains very similar to the stock KSC-75. If I were to summarise, it can be considered as a KSC-75 with more bass without sacrificing the core and stock sound.
I might also like to add that you can actually bend the stock KSC-75 clips to get more bass, but comfort and fit suffer from this, and the clips loosen up over time (in my decade of experience or so lol)
The comfort of the sportapro headphone is higher than the stock clips that came with the KSC-75. A notable feature of the sportapro headband is its ability to transform into a "behind the head" form factor, so that it doesn't mess up your fancy hairstyle.
What I enjoyed most?
Definately the sportapro headband with KSC-75 drivers. The comfort of the headband and the cleaner presentation of the KSC-75 are a good combination. Whilst the KSC-35 drivers have more bass quantity at the expense of some overall clarity, I have found the stock sportapro to be enjoyable as well with certain genres of music.
