Aful Cantor VS Softears RSV MK II

Youtube Video Summary

The AFUL Cantor delivers a balanced and neutral sound signature, praised for its exceptional upper air, treble extension, and pristine clarity. While the bass offers sufficient dynamics without being thunderous, and female vocals sound natural, some listeners might desire a touch more punch in the upper mids (around 2-3kHz) and find a slight peak in the 4-6kHz region occasionally noticeable. The premium build quality stands out, featuring a unique and stunning "star night" face plate, a thick but comfortable shell with a slender nozzle, and excellent accessories. These include a slightly microphonic but otherwise nice-looking flat two-pin cable and an exceptionally plush case typically found on far more expensive IEMs.

Graph comparisons reveal the Cantor's tuning shares similarities with models like the Moondrop Blessing 2: Dusk and the AFUL Explorer, but it distinguishes itself with superior detail retrieval and dynamics. It competes impressively against significantly pricier offerings like the Elysian Annihilator in technical performance, offering a smoother presentation with slightly less sub-bass focus. The overall sonic presentation is described as sophisticated, refined, and highly engaging, creating a sense of music surrounding the listener. Minor tuning preferences aside – wishing for a bit more upper mid presence and slightly less energy around 4-6kHz and 8kHz – the core sound quality is highly regarded.

Representing strong sonic value despite its price point, the Cantor earns a high ranking for its unique and beautiful design, premium feel, and exceptional technical performance. While acknowledging excellent cheaper options like the AFUL Explorer exist, the Cantor justifies its cost with its detailed, airy presentation and overall package. It's highly recommended for those seeking a neutral, high-performing IEM, though a demo is advised given the investment. Ultimately, the AFUL Cantor is considered a treasure, fulfilling over a year of anticipation with its beautiful aesthetics and uniquely engaging sound.

Youtube Video Summary

Softears RSV MK2 takes the original’s idea and pushes it into a bolder, bass-centric direction. The compact shell is comfortably contoured, isolates well, and uses a slightly recessed 2-pin; the angular faceplate gives off an “evil Voltron” vibe in the best way. Packaging and accessories feel premium—a silky cable terminated in 4.4 mm with a matching 3.5 mm adapter, tip selection, cleaning tools—though the bundled case looks nice while feeling a bit faux-leather and questionable for durability. Under the hood is a 5-BA array around the ~$700 mark, presented with the fit and finish expected at this tier.

The tuning is unabashedly bass-heavy with a warmer rise through ~150–200 Hz and a slightly dark-leaning top end; not super airy, but undeniably full, rich, and musical. That weight can introduce occasional roughness/sibilance in certain vocals and can muddy spoken-word content, so this isn’t for everyone. Within Softears’ catalog it stands out: far more low-end than RSV (OG), Volume S, Twilight or Studio 4, and a different philosophy than Enigma’s vivid upper-mids. Versus sets like Monarch MK4, this goes for a deeper, thumpier shelf with a gentler upper air—trading a bit of “technical” sheen for tonal density and groove.

As a “tactfully executed bass-head” Softears, RSV MK2 delivers: impactful low end, natural mids, comfortable build, and a coherent, down-sloping balance that suits modern music exceptionally well. It isn’t flawless—moments of aggressiveness, plus a case that feels more pretty than tough—but the overall package is compelling. In the $400–$900 bracket it scores a 9.4 on this scale, while strong lower-priced options (e.g., bass-shelf specialists like Punch-tuned sets) may satisfy similar cravings if budget leads. For listeners craving a plush, powerful low end done with intent, this is a distinctive and deeply enjoyable take from Softears.

Youtube Video Summary

The Aful Cantor presents a complex and frustrating case, offering what might be some of the most detailed and resolving performance under $1,000. The clarity, separation, and sheer resolution are described as "pretty nuts," positioning the Cantor as a potential benchmark for technical ability. It delivers a clean, smooth, light, and airy sound signature with a bass that is very fast, lean, and features a tight sub-bass rumble. At lower volumes, this presentation is highly enjoyable and non-fatiguing, making it exceptionally good for critical, quiet listening sessions where its technical prowess can shine without drawback.

However, this technical marvel comes with a significant and unusual caveat: it is physically fatiguing to the point of causing headaches and a ringing sensation in the temples after only 15-30 minutes of listening at moderate volumes (around 70-80 dB). This is not a fit or nozzle issue, but rather an inherent property of the IEM itself. The problem manifests as a shrill and overly intense quality in the treble at higher volumes, accompanied by a metallic timbre on tracks with lots of cymbals, making it unsuitable for energetic genres like K-pop, J-pop, or EDM. This shrillness is not fully solved by EQ and is believed to be related to the driver design, nozzle, or venting rather than just the tuning.

When compared to peers, the Cantor is more resolving than the warmer, fuller, and smoother Letshuoer Supernova but falls short of its natural timbre. It also can't match the Monarch MK3 as an all-rounder, which offers a more impactful bass, better vocals, and a smoother, more engaging experience. The Cantor's vocals are also a weak point, being recessed, light, and borderline thin. The final recommendation is to definitely demo these first; they are only easy to recommend for those who listen at very low volumes (under 60 dB) and are not sensitive to treble intensity, as its scaling at normal listening levels is poor.

Youtube Video Summary

Softears RSV MK2 shifts from the OG’s vocal-centric tilt into a bass-forward all-rounder. The sub-bass and mid-bass hit with real slam and weight, giving drums and bass guitars a satisfying, dynamic punch. Upper mids (3–6 kHz) are tamed to avoid shout, while a gentle 1–2 kHz rise keeps vocals open and natural—slightly less pushed than the original but still clear. Treble is smooth with decent air; not super sparkly and there’s no EST “sauce,” but it stays clean and non-fatiguing.

As a package, MK2’s standout is the low-end texture—thunderous yet controlled—making it one of the more engaging bassy sets under four figures. Technical performance is solid for the tier, though some rivals at lower prices bring more raw detail and EST extension. Build and accessories get a tasteful, modern refresh. For best balance, the stock tips work well; bass-boosting or treble-opening tips can shift it toward a more V-shape at the expense of overall smoothness.

On genre fit, MK2 shines with hip-hop, pop, EDM, and R&B, where its punch and warmth bring rhythms to life; for orchestral or leaner acoustic picks, the bass can edge forward depending on the mix. It scales to mid–high volumes nicely (around the 70–80 dB zone) without turning sharp. Compared with the OG RSV—now likely affected by a silent retune in recent units—the MK2 is the safer buy: less shout, more authority down low, and a broader all-rounder appeal. Recommended, especially if found below full MSRP, for listeners craving tasteful bass with natural mids and relaxed, smooth treble.

Youtube Video Summary

The AFUL Cantor lands as a flagship all-BA set with 14 balanced armatures at $800, packaged with a great-handling nylon cable and a handsome shell. The catch is fit: a very long nozzle with a metal insert demands a deep insertion, and comfort varies widely; AFUL’s stock tips are essentially required to keep that nozzle from poking and to restore some flex. Build and presentation impress, but the ear-fit can be fussy and the shells tend to stick out.

Tuning trends U-shaped: a lower-mid dip into a hefty sub-bass boost, relaxed upper mids, and noticeable upper-treble energy. When seated correctly, the set delivers crisp transients with a touch of “planar-like” pluck, good imaging, and clean BA bass that favors electronic thump over kick-drum slam; with the wrong tip or depth it swings to brittle/bright or muted. The midrange can read a bit thin, so the contrast comes more from bass/treble edges than from vocal saturation.

Compared with Symphonium Helios, both are all-BA and graph-adjacent, but Helios leans vocal-forward and smooth while Cantor is the more contrasty, fun listen that trades mid presence for excitement. Net: technically capable and competitive when dialed in, yet compromised by comfort and tip dependence. Final verdict: 3/5 stars—a better match for listeners with deep pockets and deep ears.

Youtube Video Summary

Softears RSV MK II brings back the all-BA ethos at $700 with five armatures and a promise of “re-engineered BA bass.” Build and accessories feel premium (sleek shells, plush case), while the cable choice is quirky—4.4 mm only with a 3.5 mm pigtail. Fit is outstandingly secure and custom-like but on the larger side with a longer nozzle, so comfort depends on ear size. Softears’ Ultra Clear tips work well; the new metal-ring variant adds little beyond novelty.

On the graph, bass looks like gigabass, yet in ear it settles into a warm, weighty foundation without steamrolling the mids. The midrange follows a “new-meta neutral” tilt—fuller than Harman with forward upper-mids—while treble lands clean and sparkly without fatigue. Imaging is tidy rather than cavernous; separation and delineation are convincing, with the top end executed better than the bottom. BA bass here is among the more physical and satisfying of its kind, though tactility can be track-dependent and turn a bit tubby on very bass-heavy mixes.

Against peers, Symphonium Meteor sounds warmer and more “special” but less all-round; DUNU SA6 MK2 is more colored with janglier treble and the least convincing bass; 7th Acoustics Supernova trades warmth for vivid, bright-tilted imaging; Softears Studio 4 is lighter on bass and airier; and the old Moondrop S8 stays the lively, vocal-centric counterpoint. Net take: a supremely competent, character-light all-rounder that favors bass weight over panoramic staging. Verdict: 4/5 stars—a welcome throwback done right, and notably cheaper than the original RSV launch price.

Youtube Video Summary

AFUL Cantor is a 14-BA, ~$800 set that looks premium and shows off its acoustic maze tubing through a semi-transparent shell, with faceplates in Star Knight or Marine Echo. The fit can be tricky: a long metal nozzle wants a deep insertion, and short tips won’t seal; longer tips like SoftEars Ultra Clear or Dunu S&S keep the nozzle covered and the tonality stable. The stock nylon cable feels nice but is very microphonic, making a swap advisable. Measurement quirks from shallow insertion are misleading—proper deep fit removes the apparent treble spike and reflects what’s actually heard.

Tuning follows the AFUL house sound: a mild U-shape, fairly neutral with a brightish tilt. The maze tech gives BA bass surprising decay and texture, with neutral mid-bass and a touch more sub-bass focus—close to a DD feel, if not identical. Mids sit clean; female vocals sound natural and sweetened by the steady rise through the upper-mids, while a gentle ~300 Hz dip makes male vocals and lower-octave instruments a bit lean. Treble is smooth yet energetic, with standout extension (impressively achieved without ESTs); it hovers near the upper tolerance for brightness but remains controlled with the right tips.

Technical performance is where Cantor shines: top-tier resolution, precise imaging, and a notably wide soundstage—great for detail retrieval and gaming, where positional cues pop (think footstep clarity in FPS titles). Versus Performer 7, Cantor trades P7’s fuller low-mids and better male vocals for cleaner female vocals and a more even treble. Against 64 Audio U12t, Cantor’s bass quality impresses, its mids differ (U12t’s 3 kHz dip adds sweetness but can feel odd), and Cantor’s treble sounds smoother; both resolve at a very high level, with Cantor edging imaging and stage width. Overall: an excellent but not universal pick—cable microphonics, deep-fit demands, and slightly thin lower mids mean careful matching to preferences. For detail lovers with female-vocal libraries who tolerate a brighter treble, it earns a one-star recommendation; others may prefer alternatives in this bracket.

Youtube Video Summary

The AFUL Cantor comes across as a true flagship, with a large but well sculpted shell, long nozzles and stock blue tips that reward a deep, secure fit when installed as recommended. Despite the size, the angles and shapes are dialed in so the result can be surprisingly comfortable, while the build and finish are stunning, whether in the Star KN edition or the iridescent blue version. The matching nylon sleeved cable, chrome hardware and roomy, well made case make the whole package feel like a very polished high end IEM.

On the tuning side, Cantor follows the familiar AFUL U shaped approach with a sub bass focused low end, slightly relaxed upper mids and energetic but refined treble. The bass has more rumble and depth than punch, with very impressive BA bass dynamics, a clean transition into the mids and essentially zero bleed, giving plenty of detail and texture without bloat. The midrange stays natural and resolving with vocals and instruments held clearly in the center, though some listeners may wish for a touch more low mid warmth and weight on certain male vocals, while female vocals pick up a slightly more magical spotlight.

For top end and technical performance the Cantor steps firmly into kilobuck territory. The treble carries real energy yet keeps an uncommon mix of smoothness, refinement and natural timbre, delivering strong detail, micro nuance, extension, air and shimmer without sounding sharp when the fit is correct. Soundstage width, imaging, separation and depth are all excellent for the price, and in direct comparisons it edges out several other favorites around 500 to 800 dollars in sheer detail. Taken together with the tuning, design and overall execution, this feels like an underpriced sub 1000 dollar benchmark that raises the bar and becomes the IEM to beat under 1000 dollars for anyone who values clean sub bass, resolving mids and energetic yet controlled treble.

Youtube Video Summary

This is AFUL’s flagship science project: the Cantor packs 14 BAs per side (28 total) and a heap of buzzword tech—Dual-Channel Acoustic Maze for sub-bass, non-destructive direct-drive topology, and multi-dimensional crossover trickery that reads like Star Trek schematics. The housing even extends a stainless-steel nozzle to the tip’s end to bypass tip coloration—smart for consistency, dicey for ears with wide-bore silicones. Stick to the stock silicones or better yet foams to calm treble and avoid any scrape-risk.

Sonically it’s a hyper-resolving analyzer: every band is so present that volume tends to go down, not up, and mediocre recordings get roasted on the spot. Imaging is precise but a bit less cohesive than simpler sets; stage stays as the track dictates, while separation feels like a mixing desk with 14 faders. The sub-bass dives shockingly deep for an all-BA—think whisper-low “whoomp”—yet it isn’t a bass-monster; overall balance leans revealing rather than lush.

Pairing matters: clinical amps make it razor-edged, while warmer sources (R2R, iFi, RME-ish) and foam tips smooth it into addictive detail. At $800 it isn’t the one IEM to rule them all; it’s the specialist tool for listeners who want to dissect space, mic technique, and mix decisions—more control room than mosh pit. Cable and case are solid (4.4 mm balanced), and a tuning switch would have been nice, but for the right kind of nerd this thing lets you become the squig.

Youtube Video Summary

AFUL Cantor presents as a premium 14 balanced armature set with solid build quality and a distinctive elongated nozzle, but that nozzle makes fit unusually finicky for an 800 dollar IEM. Finding the midpoint between shallow and deep insertion is critical, as too shallow makes the treble peaky while too deep collapses the stage and dulls extension. The whole experience of tip selection and insertion feels overly complicated at this price, with questionable payoff for the effort.

The tuning follows a very U shaped profile where sub bass and upper treble act as the tent poles and the entire midrange sits relatively flat and lean. Bass is tight and textured but heavily sub bass focused, with very little mid bass weight, leading to a clean yet somewhat sterile presentation that leaves lower mids thin and lacking body. Mids themselves are clean and reasonably natural thanks to a restrained ear gain region, but the combination of reduced mid bass and elevated upper treble pushes the overall balance toward a cool, unengaging character rather than a rich, everyday listen.

Where Cantor excels is in technical performance: resolution, micro detail and treble clarity are strong, and the BA timbre is impressively well controlled, giving the set a crisp, analytical edge. However, the reliance on upper treble energy to restore presence can become fatiguing on bright material, and the otherwise good stage is highly dependent on nailing the exact fit, making the presentation inconsistent from listener to listener. Taken together, Cantor feels more like a high priced specialist tool for those who prioritize technicalities over warmth and musicality than a balanced, broadly appealing flagship all rounder.

Youtube Video Summary

AFUL’s $800 flagship pushes hard on engineering: 14 balanced armatures, a five-way network, 3D-printed shells, and the brand’s acoustic maze that coaxes unusually textured, dynamic-driver-like bass out of an all-BA setup. Packaging is “classic AFUL”—nice case, multiple tip sets, cleaning brush—but light for the price, and the cloth-sheathed cable, while beautifully machined and very low resistance, is highly microphonic. The big talking point is the metal nozzle extension: tips must be pushed down to the rim for a deep fit, which optimizes tonality and treble smoothness. Comfort varies wildly by ear; some report irritation, and the long nozzle feels fragile if dropped.

Sonically, this is AFUL’s house sound elevated: a slightly warm-neutral balance with clean, meaty lows, natural mids, and an upper-mid/treble that sits right on the edge—silky and detailed with a deep fit, but bright and fatiguing if worn shallow or with the wrong tips. It is extremely revealing of mastering quality, rewarding good recordings with elite microdetail, imaging, and a huge, tall stage that can hang with far pricier sets. A mild impedance adapter (or higher-Z source) can warm the tone and shave some air, though at a small cost to sparkle and openness.

Against AFUL’s own lineup, the closest kin is the Performer 7: similar flavor, less resolution and scale, but a far better value. Cantor is the brand’s “thesis statement”—the most complete execution of its tuning—with true summit-fi technicals at a mid-summit price. Still, it carries caveats: fit sensitivity, that microphonic cable, and accessory stinginess. Recommended only if the budget is comfortable, a deep, stable fit is achievable and comfortable for long sessions, and AFUL’s warm-neutral house sound already hits the spot; for everyone else, the P7 or Explorer make safer picks.

Youtube Video Summary

The Softears RSV MK II is a 5BA set at $699 with a sleek, performance-driven look—carbon-fiber “V” and RS badge on the faceplate—paired to an ergonomic shell and fish-mouth nozzle that stays light and exceptionally comfortable over long sessions. The package is solid: a braided 4.4 cable (plus a 3.5 mm dongle), cleaning cloth, two pouches, and two sets of silicone tips; the only nitpick is wishing for a more premium carrying case at this price.

What sets RSV MK II apart is how a generous bass boost/extension coexists with top-tier imaging, separation, and layering. In Valorant, footsteps hit with extra energy and impact yet subtle cues—water steps, micro-movements—cut through even during Vandal spam and 5v5 ability chaos. In Battlefield the set is a standout for immersion (planes, tanks) while preserving precise gunfire placement and the light “clinks” that win fights. The latest mix in Apex plays to its strengths: thermites don’t mask light taps, elevation cues remain clear, slides and shield pops are easy to track; and in Call of Duty, airstrikes and mortar fire don’t swamp critical information. It’s scored as the lowest-priced S-tier on the WallHack-certified list—note the tonality skews a touch dark, so strict reference seekers may prefer something lighter, but for impactful low-end plus elite competitive clarity, RSV MK II is a killer pick.