Symphonium Helios VS Aful Performer 5+2

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Positioned as a $1,100 4BA set with a proprietary “sub-woofer” armature, Helios promises consistency via FLAT (Filtered Linear Attenuation Tuning). In practice, the claimed impedance immunity proves fickle: desktop gear can skew the treble and dynamics, and tube amps are a no-go. Performance clicks on the right solid-state portable (e.g., a Violectric unit), where the presentation opens up with striking clarity, tactile microdetail, and pinpoint imaging. The stage doesn’t just spread left–right; there’s convincing presence—sounds pop in and around the head with tidy placement. Low end is tight and clean rather than head-rattling; it accommodates bass, it doesn’t chase it.

Ergonomics dampen the honeymoon. The shell is big and oddly shaped, the stock cable has poor ear retention, and the included tips feel thick and overdamp the voicing. Tip rolling (e.g., Xelastec, foam-hybrids, or Dunu SS) helps restore balance and bass grip, but fit remains fussy. Once settled, Helios delivers a smooth, near-tame signature that’s detailed without harshness—more refinement than fireworks. Verdict: a highly capable, clear and composed monitor for source- and tip-savvy listeners; brilliant when the chain is right, but the overall package—from fit to amp matching—can be annoying enough to test patience.

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Naming drama aside (P5+2? just call it Performer 7), this Aful packs a quirky driver party: 2DD for low end, 4 BA split across mids/treble, plus a tiny micro-planar for the highest sparkle, all marshaled by Aful’s neat miniature crossover. The shells are lightweight, comfy and prettier than they need to be; the cable feels “don’t bother swapping” nice, with 3.5 or 4.4 options. The box is loaded with silicone tips but no foam—a miss, because the right seal changes everything. Price target sits around $250, which sets expectations high but not ridiculous.

Stock silicone yields a surgical, respectful tuning with bass that skews neutral and controlled. Swap to well-sealing foam or hybrids and feed a juicy source (warm Class A or tubes) and the set wakes up—stage snaps into a cohesive scene right in front, imaging gets laser-etched, and that micro-planar adds a pinch-of-salt treble spice without turning harsh. It’s an up-close presentation—sometimes almost claustrophobically detailed—in the best way: think “men with trumpets in the head,” precise placement, and excellent extension up top. Not as rowdy as the Explorers; more like a surgeon in a Hawaiian shirt—technical, but with a wink.

Practical upside: the clarity and positioning make this great for gaming and even viable for mixing/mastering checks; just don’t crank it into pain territory. Bass stays tight and responsive, treble sails high, and coherence holds. Tip and source matter a lot: with foam + warm power, it sings; with plain silicone, it’s merely polite. Final tally: a confident 8.5/10—doing a lot right at its price, dinged half a point for making everyone do math on the name.

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Symphonium Helios hits the kilobuck arena with a 4-BA flagship co-developed with Subtonic, priced around $1,100. The unboxing is minimal: a waterproof, aluminum “hockey-puck” case (cool but gritty threading), assorted tips, and a standard 0.78 mm cable without ear guides. The shell is surprisingly large—reportedly to house bigger capacitors and wider tubing for the desired treble extension—and the wide nozzle plus stick-out fit will be the biggest hurdle for many ears. Comfort varies; demoing first is wise.

Sonically, Helios tracks Harman-ish through the lower mids, then diverges for a more relaxed ear-gain and a showpiece treble. Bass is sub-bass focused with near-zero mid-bass, staying impeccably clean of the mids; for BA, it slams impressively—competitive with U12t—though a touch light on texture. Mids read lean/clean (200 Hz dip), while the top end is remarkably linear with huge air; with AZLA SednaEarfit tips it can verge on abrasive, but the included silicone tips smooth things out to a class-leading treble at this price. Technicals are excellent: incisive imaging (even occasional “backwards” cues), strong macro & micro-dynamics, and lively transients; ultimate resolving edges still nod to sets like Annihilator and U12t. Taken as a whole, Helios stands as a top-tier kilobuck pick on sound quality—its fit is the make-or-break.

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Aful Performer 5+2 lands as a hybrid of the beloved Performer 5 and the punchier Explorer. The unboxing is the familiar P5 affair—same case, same style of tips—nothing flashy, but solid. The shell mirrors the P5 in size with a comfy little stabilizing wing that locks in well. No metal nozzle or front filter here, yet tip retention is secure and hassle-free. The flat 2-pin socket is straightforward, and the stock cable feels thick and supple with a reliable chin slider and handy red/blue channel markers. Overall: understated build, great ergonomics, daily-driver ready.

Sonically, this one aims neutral with a very distinct top end—clean, dynamic, incisive. Think switching from black-and-white to color; cymbals and overtones pop with a slightly crunchy/pristine edge that energizes detail without turning harsh on good recordings. Bass isn’t about sheer quantity; it’s about slam and dynamics—quick on the draw, well-controlled, and satisfying when called upon. Vocals sit a notch forward, microdetail is strong, and the overall presentation is coherent, clear, and technical with convincing stage, resolution, and imaging. Not a treble-shy or bass-bombed tuning—more a refined all-rounder for those who want clarity and bite.

Versus the original P5, the 5+2 fixes the missing “air” and soft edges, trading them for crisper transients and better extension. Compared with Explorer (a value champ), the 5+2 brings superior upper-treble reach, detail, and vocal focus. Against Performer 8 and Cantor, it feels more visceral—the P8 is smoother and more relaxed, while Cantor pulls finer microdetail but with less bass slam. Sets like Dino Quattro or J’s Estrella bring bigger fun or treble theatrics, yet the 5+2’s balance and everyday versatility win more often. Net take: a neutral-leaning, highly technical upgrade that stands tall in its bracket—easy to recommend to anyone chasing clarity, speed, and controlled impact over pure warmth or excess bass.

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The AFUL Performer 5+2 (Performer 7 / P7) takes the P5 recipe and adds a second 6 mm dynamic for the lows and a micro-planar for the highs, nudging MSRP to $240. Unboxing mirrors the P5: nine pairs of tips and a decent case, but the accessories feel bare-bones at this price—no foam tips and a non-modular cable, even though the included 8-wire is supple and well-behaved. Build is classic AFUL: 3D-printed resin, blended nozzle (no mesh or lip—watch tip retention), single rear vent, and striking blue-green mosaic shells inspired by Suzhou gardens—cool-wall approved with four compliments to one “meh.” Fit is semi-custom and a touch chunkier than P5; comfortable for most, a conditional pass for small ears. Note a sporadic batch quirk: some units have over-tight 2-pin sockets; exchanges fixed it for affected buyers.

Tuning sits in warm-leaning neutral territory. The dual dynamics deliver punchy, textured bass that rumbles without bloating; guitars and drums carry convincing weight. Mids are the star—rich, full-bodied, vocal-forward without shout, with clean separation and natural tone. Treble from the micro-planar is smooth yet energetic: cymbals and vocal harmonics sparkle, special effects have bite and body, and only treble-sensitives may find hot mixes a bit lively. Technicalities impress for the money—detail retrieval and nuance feel a class up—while stage and imaging are solid rather than showy.

Against peers: the Tangzu x HBB budget pick mirrors the overall tonality but P7 offers higher resolution and more treble finesse; the planar “Heyday” alternative is brighter/faster with leaner bass; versus Performer 5, P7 brings tighter low-end, smoother treble, and better extremes detail; the Fresh-collab competitor pushes vocals further forward with bigger stage but leaner lower mids. Verdict: a versatile all-rounder that suits broad libraries and even content creation thanks to its balanced tonality and detail. Not for bassheads, trebleheads, or strict Harman-lean seekers, and the accessory pack/cable quirk holds it back from a slam-dunk. For roughly $240, though, it’s a brilliant, resolving upgrade in the AFUL line.

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Aful’s Performer 5+2 upgrades the original hybrid with 2DD + 4BA + 1 micro-planar tweeter and lands around $240–$250. The unboxing is practical: three sets of silicone tips, a pocketable puck case, and a soft, nicely draping cable (available in 4.4 or 3.5), though the braid can look a bit loose and the pre-formed hooks run large. The resin shells shift between blue and green under different light; fit is medium-large, very stable, and comfortable once the right tips are found. Note the narrow nozzle without a retaining lip and partially exposed bores/filters—tip grip is key and a little care prevents ear-gunk ingress.

Tonally this leans mild V-shaped: a clean midrange with a confident bass boost, a touch of lower-treble presence for bite, and well-extended air up top. The result is more incisive and punchy than the original P5, with clearer on/off transients that aid separation and layering. Trade-offs show as a hint of gritty/plasticky treble texture on cymbals and brushes—not harsh, but less natural than ideal—while the bass stays tight and exciting.

Against Aful’s Explorer, this sounds brighter, more spacious, and more technical; Explorer plays warmer/denser with smoother treble but less openness. Versus the pricier Thieaudio Oracle MK3, tuning is broadly similar: Oracle is smoother and deeper with a softer attack, while the Performer 5+2 brings more snap and engagement for less money. As a modern mid-tier hybrid, it absolutely still has a place—energetic, spacious, and well-executed—earning a solid four stars.

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Performer 7 lands with a neutral-balanced, laid-back tuning and good treble reach. The presentation is clean and generally safe, though there’s a touch of sizzly “planar-ish” timbre up top. Technicals are solid for ~$200—slightly behind sets like Quintet and Super Mix 4, about on par with Nova. Bass from the dual 6 mm DDs is tight, controlled, and free of bleed, but lacks the slam and rumble of competitors using larger drivers; mids are well separated with decent layering.

The weak spot is vocal extension: a push around 1.5 kHz tries to bring them forward, but a dip through 3–6 kHz keeps them from opening up. Tamer upper-mids help avoid fatigue for rock/metal, yet the modest low-end impact leaves drums and basslines feeling uneventful. It’s a mid-volume set that doesn’t scale well—turning it up accentuates the 1.5 kHz emphasis and treble sizzle. Treble isn’t peaky, just a bit glassy at times; for K-pop the smoother mids can work if less extended vocals are acceptable.

As a value play, there are stronger options: Nova, Chopan, and Super Mix 4 offer better bang-for-buck; for a similar clean/neutral target, Tanchjim Origin sounds more natural with better bass texture and vocal reach, and DynaQuattro adds sub-bass and fuller vocals—none with the planar-ish timbre. Even AFUL’s own P5 is cheaper and more fun, while the Explorer undercuts the price and scales impressively. In today’s crowded market, P7 is a competent all-rounder but not distinctive enough to stand out.