Frequency response of the 7Hz Timeless. Measurement taken with an IEC-711 clone microphone. Comparisons can only be made to other measurements taken by this specific microphone. A peak at about 8 – 10 kHz is likely an artifact of the microphone. It likely does not actually exist as depicted here. The 7Hz Timeless has a light V-shaped but still, fairly balanced sound signature. Bass and treble are moderately boosted with the midrange just a touch recessed. It has a pleasing tonal balance where the amount of bass and treble feels about right. The detail retrieval and the separation are above average. Even though they don’t compete with the All BA IEM’S being a single planar, these sound really good with enough detail retrieval.

The midbass region of the 7HZ Timeless AE is nicely textured, tight and impactful along with a good level of clarity, speed and authority when I do listen to songs like Charly Antolini’s “Duwadjuwandadu” or Gogo Penguin’s “Murmuration”. Instruments like toms, snare drums and bass guitars are produced with an excellent grade of roundness and fullness. While there are no protruding or awkward edges, the S12 Pro’s nozzles are pretty short. Thus, those with bigger ears may encounter the shell pressing on the concha, leading to slight discomfort, especially when it comes to longer listening sessions. YMMV. InternalsThe T01 module has better pairing overall, expands the stage, adds more details and the treble peaks are more controlled.

The Timeless itself is a 14.2mm planar driver within the round disc-like aluminum shell. The driver size puts it smaller than my very own Unique Melody ME1, and the Audeze series of iSine/LCD-i4 and i3/Euclid, but however, it is larger than the RHA CL2, and the various Tin P1, P2, and other recent chi-fi planar iems. Basically the timeless just outright beat the M50's I know the community likes to make fun of people who buy this headphone but when I got it it was my first "audiophile" quality headphone and thought it was great but compared to this it's just not even a question it beats them in details and imaging too but not surprising it is cheaper right? I must say, I was not expecting such a deep low end from it. So I was quite pleasantly surprised to say the least. The bass goes deep and has a considerable emphasis. Juicy and full bodied with enough texture - this is how I would describe the low end. However, in spite of the abundance of emphasis on the low end, the marvel lies in the fact that it absolutely does not obscure the rest of the spectrum, which, although, has been a pretty regular feature in the recent iems with at least decent competence.Closing​The 7Hz Timeless are not perfect. The treble tuning could definitely use some work, the sub-bass could do with more physicality, and the upper-mids and lower-treble need adjustment. Imaging and microdynamics are two other weak points. The shape of the Timeless is quite original also, definitely a break from the norm. They are a large circle shape that fits just outside the ear, with a nozzle that is quite long but makes them quite comfortable. Personally I find the S12 more comfortable but the Timeless are not bad in this regard either.

The first item that pops out is not the iem, but the solid aluminium chunk of a box. It is shiny, it is heavy, and it assures protection like no other. Honestly, the box alone should cost a premium. The Timeless performs excellently and fulfils its niche as a planar IEM extremely well. It plays to its strengths perfectly. That said, the Timeless still has its “flaws” or certain caveats that not everyone would be a fan of, like the fit, and tuning, which at the end of the day, is a personal preference. From my perspective, the Timeless suits my tastes and library very well and I absolutely don’t regret a single cent I spent on it.Fit wise there is no need to be afraid looking at the huge size of disk, as per my opinion its more of an aesthetic thing that remains outside the ear, the insides of IEM are neatly designed for the comfortable fit and get support from the ear canal. The earpieces are quite light weight and does not cause any fatigue even for long listening sessions. My first encounter with the 7Hz brand was through their i99 IEMs which had a very unique shell design that immediately caught my attention. Unfortunately, the sound quality of the i99 did not match their design prowess. I had a doubt given the odd shape of the shell whether these will fit me. But surprisingly, in spite of the large circular faceplate, the fit was super comfortable for me - the faceplate did not prove to be an inconvenience. The low end of the Timeless is Just sublime. In one word, it's “FANTASTICO!” Both the sub and the mid bass have nice impact and the technicalities. The planar type of bass is very addictive and their presence is very authoritative.