Closer Examination

The cable that ships with the 7Hz Timeless depends on the termination you picked at the time of order. There is no modular plug connectivity system, so you need to choose between 3.5 mm single-ended TRS, 2.5 mm balanced TRRS, or 4.4 mm balanced TRRS. I have the 3.5 mm version here, as evidenced by the gold-plated connector seen above. I do like the black and red aesthetic used for the connector housings throughout, with the 7Hz logo here and on the splitter itself. The cable is more than decent with a conductor that is a mix of pure copper and silver-plated copper, both of which get a silver foil sheathing that is co-axially shielded. There are two strands thus, one per channel, which look to be silver throughout. The transparent plastic section on top at the other end adds to the memory wire formation for when you hook the cable over and behind the ears, and the MMCX connector lead from a slightly angled housing helps this process. The channels are marked "L" and "R" on the housing, although it's not immediately obvious unless looking for it. It could do better when it comes to microphonics, however, so I can definitely see an upgrade cable coming in handy here, especially if you go with something that has modular connectors, such as the Kinera Leyding we saw recently.


I thought of Starship Enterprise when I first saw the 7Hz Timeless in photos online, and seeing them in person still has me draw that comparison. As typical for IEMs, we see a two-piece shell design, and both are CNC-machined aluminium treated for the durable black finish seen above. The face plate, if you will, is part of the shell top thus, and the purposely left-over machining marks allow light to reflect off in cones. You can feel the machining marks by moving your nail across them, but the laser-etched "7Hertz Timeless" marking is more obvious. Don't ask me why it is "7Hertz" here rather than "7Hz" or "Seven Hertz," though; the company needs to get a better grasp on its brand identity.


The form factor of the 7Hz Timeless may seem weird, and it is, but it isn't necessarily larger when it comes to the actual fit because the circular fascia extends past the body of the shells, which is sculpted more with ergonomics and the shape of the ear concha in mind. This extension also acts as a roof of sorts over the MMCX connector, and the inner side has quite a lot of ventilation for IEMs—a total of four vents for airflow and pressure equalization. Three holes are grouped further down, with the fourth placed separately above, which puts it more inside the ear to be the outlet itself. The L/R channels are also marked for those who need it, and the pre-installed ear tips are again different from the other three sets we saw before. Removing them, we notice a relatively narrow and stubby nozzle, which may affect fit further, although it has a notch to help keep the ear tips in place once installed. There is also a metal grille, but this is where I should point out that there are at least two iterations of the nozzle filter, with earlier production batches having a foam insert below the larger grille. This newer production run goes with a finer mesh screen underneath, and the replacement filters provided in the box are just the larger grille without the finer mesh attached.


Fitting the different ear tips is trivial with that notch on the spout further holding them in place, and seen above are the other silicone tips that come with the 7Hz Timeless, all in size M, installed on these IEMs. Just make sure you go around the tips to ensure they are not in at an angle. Note that the widest point is ~6.3 mm at the notch, so you may well have to stretch the ear-tip bore to go around the notch. Regardless of the tips you go with, the next step is to re-connect the cable by carefully pushing the MMCX connectors back in place. I would have liked to see a 2-pin connector, or at least the inclusion of an MMCX extraction tool since it can be a bother to remove the cable for any storage or cable rolling. Be sure to match the channels correctly before connecting the connector of your choice to the source. I know there are many who prefer using IEMs throughout, but I like to use over-ear headphones when sitting down and IEMs/TWS earbuds on the go. I've paired the 7Hz Timeless with all the tested portable DAC/amps thus and personally liked the cleaner profile and handy EQ options of the Qudelix-5K as the source, paired to my phone or laptop.