Hey, everyone! Effect Audio kindly gave me the opportunity to check out their new Signature Series II cables. These are my impressions of the three, which were graciously provided at Effect’s own expense. I hope you enjoy.

First off, these cables mark a notable departure from the Signature and Premium lines (aside from the Eros S) by adopting an 8-wire design by default. They’ve gone from the usual 4-wire, 24 AWG to 8-wire, 26 AWG. They’ve also incorporated the solid conductor core from the CODE line, as well as a few other metallurgical innovations like
Quantum Copper on the Ares and
TESC on the Eros, which you can read further about on Effect’s site or the full reviews of these cables, which I’m sure will arrive soon.
Another ergonomic change is the trimmed Y-split, which I’m glad to see. I’ve been getting more and more into Y-splits that are vanishing, yet stylish, and this is what Effect have achieved here. So, while the wire count has doubled, the smaller gauge and tighter braid have made them just as supple as their predecessors. I've always preferred 8-wire braids, because they’re far less likely to unwind, as the 2-wire twists on Effect’s 4-wire cables have been prone to. So, the Signature Series II will almost certainly be more durable and conductive with nearly no trade-offs in ergonomics or weight.
The one major complaint I have, though, is the plastic wrap on the ConX connectors. Not only have they used a thick, heat-shrunk plastic that glue themselves to the barrels and were impossible to tear, their attempts at giving the plastic pre-made cuts (to make removal easier) were also awfully inconsistent. Some had no cuts at all, while others had cuts so shallow that they didn't make a difference. In the end, I literally had to pick at the plastic with my nails until I had the slightest bit of a lip, then pulled on that lip slowly with tweezers, being careful not to scratch the finish on the connectors. It took me and my wife over half-an-hour (at least it felt like it) to get the plastic off all 6 ConX connectors, and it’s something I don’t want to experience ever again. I’d suggest a simple, loose wrapping of plastic next time, and I’d suggest Effect
test these things before they ship it on (potentially) thousands of cables. As they say, the devil is in the details.
Anyway, ‘rant out of the way, here’s how the cables sound.
ARES S II
Like the S before it, the Ares S II delivers a one-two punch of openness and warmth. This time, I’d say it leans more towards the former. While copper cables are generally known (some might say stereotyped) for adding lushness and body, I’d argue this is more of an auxiliary weapon in the Ares S II’s arsenal. The ace up its sleeve is the depth and dynamic range it offers over your average stock cable, owing to its 8-wire design. Musical passages that were once compressed suddenly have room to move; resonate and express. And, that space is darker and cleaner too. This is especially in the mids. Whether it’s vocals, horns, guitars - you name it - they’ll enter the mix from further back, and they’ll step further forward when called for, resulting in a more open, presentation that gives the track more life. The Ares S II imparts a slight lower-mid boost helping that along too.

Speaking of its warmth, it’s not the kind that just boosts bass and loses clarity. Rather, this Ares refines IEMs by shaving off tizz or glare to round them off without hurting technique. The Aroma Audio Fei Wan is a famously energetic IEM, particularly in the low- and mid-treble. On this Ares, those regions aren’t rolled-off or dipped. I’m hearing about as much presence and cut. But, the digital, prickly notes that were on the stock cable have been combed through and cut, resulting in a finer, easier-on-the-ear sound that preserves most (if not all) of the Fei Wan’s original tone. Bass-wise, I’m not hearing the S II change too much, which I find refreshing. The improvements there are more a result of the 8-wire design. The extra dynamic range gives the lows more room to hit and decay cleanly, and the added resolution helps it cut with more detail too.

As far as weaknesses go, the Ares S II isn’t the best enabler for width. The funny thing is that it has a clean, black backdrop in all directions, but sounds on the x-axis just seem to bunch up a tad. It’s like a band playing on a big stage, but choose to stay close together anyway. Also, I do hear a low-treble bias in the top-end, tapering off in the highest registers. While it’s smooth and refined, I wouldn’t pair it with an IEM that’s already articulate there, simply for color and balance. That aside, though, I think the Ares S II sets a high bar for the entry level market. As long as you don’t mind the feel of its 8-wire config, the benefits you’ll reap from the design’s dynamic range, background blackness and air are invaluable.
CADMUS II
The Cadmus II thankfully improves on the weakness of the OG. I found the original specifically coloured and, therefore, limited as far as IEM and genre pairings go. This Cadmus eases up on that, resulting in a more versatile cable. I’d call it ever-so-slightly U-shaped, with additions in the sub-bass and high-highs. Versus the Ares S II, there’s a cleaner, flatter, more plain timbre to its midrange. Instruments don’t have the extra girth the copper cable gives them. Fortunately, they aren’t thinned out either. There’s still a hint of wetness that keeps them life-like and semi-analog. The same goes for the treble, which hasn’t been pumped up for clarity’s sake. If anything, I think it’s a bit more linear (or even) versus the Ares’s lower-treble bias. It’s a refined, clean, airy treble that doesn’t indulge in articulation, and imparts its clarity subtly.

While the Cadmus lacks the Ares’s boldness, it easily makes up for that in vibrance, expansion and note size. The light shimmer (or brilliance) it imparts onto an IEM’s treble highlights chimes, cymbals, splashes and hi-hats. They pop more than they do on the Ares, which adds an exciting contrast when the percussionist strikes them. The same goes for the upper-mids. There’s more here than the Ares S II, heightening horn stabs, snare hits and vocal belts. Then, the Cadmus’s notes are further spread out. It doesn’t have the Ares’s width issues, and it sounds notably more out-of-head. Aside from being spread further apart, these notes grow larger too. So, again, while the Ares injected life through expressive, resonant mids, the Cadmus does so with light pops of zingy energy spread throughout the stage.

Now, the Cadmus II isn’t a cable I’d get for IEMs that need intimacy or body. And, despite the improvements over its predecessor, it also isn’t a cable that’s perpetually exciting. Eventually, there will be a point in your listening session where its little pops of energy even out, and you may find the cable a smidge dull. But, that’s inevitable with 99% of cables with this sound. Either way, I commend the efforts Effect have made in improving their SPC cable. Like the Ares S II, I think it’s stellar for the money, and I can easily see it giving sleepier IEMs a spring in their step.
EROS S II
The Eros S II surprised me with a sound that’s - seemingly - drier than the Cadmus II’s. It has a tighter, crisper, cleaner attack to it. But, eventually, I realized it wasn’t because of colourations in the low-mids, mid-bass or anywhere in the FR. It’s because of the Eros’s cleaner, more pristine, more distant background, its stronger separation and faster PRaT. Notes themselves remained intact - in fact, I found them weightier and 3D-er than the Cadmus II’s - but the spaces between them were far quieter. It’s like how cutting noise in a photo automatically increases contrast. So, the Eros S II isn’t nearly as coloured as I first thought. Rather, it’s its technique that gives it this snappy, now-you-see-it-now-you-don’t sorta presentation.

The other notable advantage it has over its siblings is space. The Eros images far wider than the Ares, and marginally so over the Cadmus. Where it leaps over the latter is height. Notes on the Eros spanned a bit further upwards and downwards, and that’s a good chunk of the reason why I found its notes more 3D. It maintained tangibility more consistently too; resolving sounds with equal weight and impact all around the head. Whereas, the Cadmus II was most resolving at the center, far-right and far-left. Keep in mind, these are very minor differences I picked up in successive A/B tests. But, these discrepancies do add up towards the Eros S II’s, again, more dynamic, dense and engaging sound.

Tonally, I don’t get a lot of colouration from the Eros S II. Its primary augmentations are clarity, expansion, precision and speed. If I am to pinpoint anything, I’d say it has a similar neutrality (or nonchalance) to its lower-mids to the Cadmus, and it has a slight low-treble bite like the Ares. But, they’re quite minor, and I don’t think they’d impede the Eros from matching well with most IEMs. Just keep in mind that, again, this is a cable that adds technique more than emotion (or warmth, or resonance). So, if your IEM is already adept, and what you’re looking for is a bit of organicity or soul, then I’d suggest looking elsewhere. But, if your IEM is in need of ability, or if clarity and space are where you draw your enjoyment from, then the Eros S II is a great option, especially, like the two cables before it, for the price.