64 Audio U18T VS Canpur CP622B

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Positioned as a top-of-the-line “reference” set with 18 BAs and a ~$3,000 tag, the 64 Audio U18t brings a brighter tilt than its siblings. With the M15 APEX module, treble gains presence and vocals feel a touch more filled out than on U12t, but the upper range can push into fatigue—sibilant tracks (e.g., CHVRCHES “Graffiti”) come through a bit sharp. Bass emphasis skews mid-bass over sub-bass, adding body yet also a hint of bloat, so the overall balance reads more V/U-shaped than neutral-warm.

Technical ability is still strong—detail retrieval and extension impress without resorting to glare most of the time—but the tuning trade-offs blunt long-term comfort. Versus U12t, U18t is livelier up top yet less forgiving, and U12t’s cleaner, more dynamic low end feels better integrated. Build and fit are solid across the line; the stock cable, however, remains thin and tangle-prone.

End result: a premium, energetic take with sparkle and presence that will appeal to treble-tolerant listeners, but for many the combination of mid-bass thickness and occasional treble bite undercuts the value at this price—earning a moderate score compared with the smoother, more versatile U12t.

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Canpur CP622B makes a striking first impression with a premium case, tidy accessories, and a shimmering faceplate—but the shell is huge, bordering on chunky, and can push fit comfort limits over longer sessions. Sonically, it hits with authoritative sub-bass and impressive extension, yet the overall presentation skews dark; vocals sit a touch recessed, with a wish for more 1.5–3 kHz presence and a bit more upper-air sparkle. Out of the box it already thumps, but a light EQ lift to upper mids and bass can coax out more vibration and energy.

On graphs and in A/Bs, the CP622B comes off as a specialist: fantastic low-end texture (bass judged around 9.5 for level), solid resolution and stage, but imaging feels slightly constrained by the muted 3 kHz region. Compared with peers, FATfreq Grand Maestro reads like the safer “one-and-done” all-rounder with more flair up top; Aful Cantor delivers comparable presence at a fraction of the cost; Hisenior Mega5-EST Bass offers a friendlier fit and a tuning that can feel just a hair more balanced; and as a personal north star, Elysian Annihilator 2023 still sets the bar for extension and excitement. Net: a fantastically built, bass-thrilling CP622B that shines with hip-hop/R&B and cinematic lows, but reads as niche and pricey—a connoisseur’s piece for big collections rather than a first-pick endgame.

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Canpur CP622B is positioned as a true apex set among today’s ultra-high-end IEMs—think Storm, Grand Maestro, Pearl, Multiverse, RN6—where differences are subtle and taste-dependent, not about basic quality. The message is simple: once at the Money Trees level, most flagships are excellent; the CP622B stands out by pushing resolution and authenticity to the top of that pile while keeping music the focus.

Evaluation leans on a tight suite of reference cues: bass definition via Black Sabbath “Sweet Leaf” (2:36–3:10), midrange texture with Soundgarden “Spoonman” (spoons/vocals) and Neil Young “The Needle and the Damage Done,” and treble control from Aerosmith “No More No More” (recurring cymbal strikes). Micro-details and spatial tells include Michael Jackson’s beep, Violent Femmes finger snaps, the crowd-side triangulation in Lynyrd Skynyrd’s “Freebird,” Pink Floyd’s gate announcement in “On the Run,” Randy Rhoads’ finger slide in “Dee,” and the famous cough in “Wish You Were Here.” These checkpoints spotlight the CP622B’s clarity, attack/decay, and rare sense of depth for an in-ear.

Two practical notes seal it: level-matched A/B at 77 dB @ 440 Hz versus Subtonic Storm to ensure fair comparison, and a low-frequency test around ~42 Hz that makes the shells physically vibrate, delivering that body-felt slam prized in hip-hop and recognized in orchestral power. With a library spanning ACDC, Alice in Chains, Bob Marley, Dre, Kendrick, Metallica, Pink Floyd and more, CP622B reads as a top-tier all-rounder—immense detail at low volumes, potentially intense when cranked, and an easy recommendation for those chasing the very best.