The audiophile world seems to always have a love/hate relationship with V-shaped tunings. While on the one hand, much of being an audiophile is the pursuit of the purest replication of the original sound, on the other hand, it’s also very much about finding the gear that delivers the highest level of musical enjoyment for your ears. Effect Audio Perseus lands right at the crossroads of these two ideas – attempting to balance fun and engagement with pure detail on the knife’s edge.
Build and Design
Perseus comes in a flagship-worthy package, with a premium box including the case, cable, and a selection of eartips. The case is a simple round, leather wrapped box, with compartments for your eartips under the main IEM space. The cable is the specially designed Effect Audio ORDINIS, which includes gold, silver, and bronze litz inside. I was a big fan of the Effect Audio Dionysus cable, and ORIDINIS has a similar look, feel, and construction, which I also like. For eartips you get Arc Oval silicone tips, and Symbio F foam tips, both of which make for an excellent pairing with Perseus: Symbio being a little smoother and more rolled off in the treble, and the Arc Oval offering a fuller extension and more detail.
In terms of the actual IEMs, the shell is aluminum, with a faceplate inspired by Greek Mythology. They certainly look cool, and feel expensive. Internally you get 9 drivers, with 2 DD, 2 BA, 4 Planars, and 1 BC – with the BC being configured for spatial enhancement rather than subbass. In terms of comfort, Perseus has a nice fit for a high-driver count quadbrid, and is reasonably comfortable – if not exceptionally so. I didn’t personally have any issues with physical fatigue in long listening sessions. But would you want to listen to it for hours on end?
Sound
Perseus smacks you right away with a powerful, in your face, bass heavy sound, but it doesn’t neglect the rest of the frequency spectrum. Perseus’s elevation from the upper mids through treble comes close to matching the bass in emphasis. In the end you get something that’s in between a true “v-shape” and a bass-boosted Harman Signature. What Perseus achieves that many similarly tuned IEMs don’t though, is a sense of refinement and texture that doesn’t lack for fun, engagement, resolution or detail.
In the bass, there’s a combination of deep, rumbly extension, with hard-hitting midbass, and rich texture. Tracks from bass-heavy genres like EDM and hip hop hit with energy, dynamics, and power, but the bass doesn’t have significant bleed up or interference with the midrange.
The midrange is noticeable scooped, but Perseus brings it back up in the upper mids, offering a nice sense of separation and clarity that highlights vocal performances in rock and pop. The timbre is also good, with the mids never receiving too much color or feeling overpowered.
At the top, the treble delivers energy and extension through the top, with a sense of clean definition and resolution. The upper end of guitars and violins is beautifully rendered, as well as the sense of air and space around them.
Perseus’s soundstage is impressive, largely thanks to the bone conduction implementation, offering a strong sense of space around the listener. Imaging is also strong, with a nice sense of placement and separation in the space. Perseus doesn’t have the massive soundstage associated with the ultra-flagship crowd, but it is a particularly strong showing for the price.
Effect Audio’s intent with the design is that the complete package from the IEMs to the tips and cable are perfectly matched to deliver a complete experience. I can’t necessarily say that this is the case more than with any other set of high-end IEMs, but the eartip selection and cable pair nicely with Perseus, leaving you with a set that you can run with anything. Perseus is reasonably sensitive as well, and not particularly source dependent. You can run it with your Apple Dongle or on a tube amp without too many considerations.
Perseus demonstrates its refinement and restraint on “Nardis” by Bill Evans Trio. Each delicate chord from the piano is crystal clear, with the cymbals ring out crystal clear keeping time behind it. The bass is nicely texture with good detail and pluck, and the low notes deliver just a little extra resonance and physicality. Each instrument is nicely separated into its space, and even when the bass feels a little elevated, it doesn’t step on anything else in the mix.
On “Of Matter - Resist” by TesseracT, Perseus is right at home, opening with a spacious, ethereal wave, that the vocals soar over, the song quickly builds as multiple vocal parts weave in and out, and when the full band comes in, the drums and bass hit hard, while the guitars feel like they’re going to set your ears on fire. Perseus deftly handles the layers of vocals, guitar, and synth, powered by pounding drums, and makes you reach for the replace button to hear it all again.
The opening to “All the Stars” gives Perseus a nice subbass test – which it passes with flying colors – and when SZA’s vocal comes in, you catch both the excellent vocal delivery and the strong layering underneath it. In between Kendrick’s bars, you might have a moment to appreciate the space and ambience Perseus is creating around the listener along with the clarity each element is delivered with, but then you’re right back in the chorus with the vocals taking center stage. Perseus delivers every moment of the track with the exact right sort of balance between vocals, bass, and all the layers in between.
Comparisons: Campfire Grand Luna, Thieaudio Monarch MKIV
If you’re looking for a bassy IEM in the $1000 range, you do have a number of options besides Perseus, but they don’t all necessarily have the same magic or formula that Perseus does. For comparison, we’ll look at the Campfire Audio Grand Luna as a more heavily bass-focused option, and one of the best selling IEMs in this range: Thieaudio Monarch MKIV.
In terms of the build and design elements, Perseus has the strongest combination of materials and design. Grand Luna comes in second, with its unique look and the usual strong Campfire Audio package, but Perseus is a clear stand out here, and looks competitive next to much more expensive options.
In terms of sound, where Perseus and Monarch MKIV maintain strong versatility and balance, Grand Luna goes all in on a thick, bassy sound that sacrifices vocals and clarity in the process. But if all you want is the biggest bass, Grand Luna still offers strong texture and technical characteristics. Monarch MKIV’s standout here is that it offers two different tunings with the switch, but in either case, there’s a stronger upper treble emphasis on Monarch MKIV that makes it brighter and airier than Perseus.
Of the three, Monarch MKIV offers the greatest versatility, but I prefer Perseus’s tuning balance, specifically because it rolls off a little bit of the treble, without losing any fundamental sonic characteristics. If you’re looking for balance that leans towards bass, Perseus is the pick here.
The Bottom Line
Perseus might not be the most accurate IEM in your collection, but its strong technical performance combined with a well balanced take on a v-shaped tuning offers engaging, dynamic fun on one side and detailed refinement on the other. Perseus is a strong contender in the $1000 price range, and should be on every IEM enthusiast’s radar.
