I/O Sogno VS Dunu Vulkan 2

I/O’s Sogno lands as a more Harman-esque, musical follow-up to the Vol with a punchy, dimensional bass that’s quick in attack and decay, slightly forward mids, and an upper end that can be nudged down with the right tips (stock tips run a touch brighter). Resolution is solid and the stage isn’t huge, but it never feels congested. The unboxing is class-leading for the $400 bracket: an all-resin shell with a beautiful faceplate, an interchangeable-termination cable, hard case with removable foam, pouch, and five full sets of tips. Fit is snug and lightweight, though the lower protrusion can cause minor irritation after ~4 hours.

For competitive gaming, tip choice is everything thanks to the “fish-mouth” nozzle. TW40 tips work well in Valorant, while third-party AZLA SednaEarfit ORIGIN tame the hot 2–4 kHz band in Apex and COD so gunfire doesn’t mask shuffles, climbs, and utility cues. With the ORIGIN tips, separation, verticality, and imaging lock in nicely; microdetail and depth read (front/back/over/under) still leave a little on the table, keeping Sogno at a strong B on the Wallhack-Certified tier list—on the cusp of B+ with perfect synergy. Footsteps and positional cues remain clear even while shooting, bass stays controlled, though aerial killstreaks in COD can sound a bit abrasive. Net: an excellent music-first IEM that crosses over well for ranked play if you roll the right tips.

Fresh Reviews original ranking

I/O Sogno aims for big “perceived value” at $400: a robust, watch-style carry case, an unusually rich ear-tip kit (multiple five styles neatly boxed, including foam and wide-bore variants), and a swappable-termination cable (3.5mm to 4.4mm) with tidy hardware and standard recessed 2-pin. The shell mirrors the Volare—medium-large with a longish nozzle—and the semi-custom shape sits securely enough but feels a bit wedge-like, not deeply locked behind the anti-tragus. Build and accessories are excellent for the price; comfort is fine, if a touch chunky.

Sonically it’s very Harman-compliant: a mostly sub-bass lift, leaner mids with forward vocals, and a treble that follows the target’s gentle roll-off. That tuning makes the Sogno sound dry and somewhat narrow/congested; cymbals and hi-hats lack shimmer (a slightly “plasticky” timbre), and staging isn’t especially open. Versus Volare, Sogno is less warm and less airy; versus Truthear Nova it hits a bit harder down low but remains similarly clinical; and value pressure comes from cheaper sets like the 7Hz Zero. In direct comparison, Moondrop × Crinacle Dusk (also below this price) feels miles ahead in technicalities and overall engagement. A solid, accessory-rich Harman option, but not quite the “dream” its name suggests—overall 3/5.

Super* Review original ranking

Opening the serious business packaging reveals the Dunu Vulkan 2 IEMs and a mountain of accessories, including the praised SS tips and the excellent gunmetal gray cable with its satisfying connection mechanism. The build quality screams premium, easily suggesting a price tag of $300-$400 minimum just on looks and feel. The shock comes when discovering these eight-driver hybrids (two dynamics, six BAs) actually cost only $359.99, a fraction of the expected $800-$900 based purely on the sonic experience.

Listening reveals something truly special. The Vulkan 2 delivers an unrestricted sound with a huge soundstage where instruments have ample space and separation, like moving from a cramped elevator to a vast freight elevator. Bass is unapologetically real, not boosted or artificial, while detail retrieval is exceptional across the board. Critically, they achieve this with remarkable sensitivity, sounding fantastic even at whisper-quiet volumes, unlike many complex multi-driver IEMs. They create an incredibly immersive and effortless listening experience, transporting you into the music itself. This performance immediately puts them in direct competition with the previously crowned best-of-year, the Kiwi Ears Astral, despite costing nearly $100 more.

These are declared god tier IEMs. They sound phenomenal regardless of source gear, performing brilliantly on both high-end stacks and budget $200 DAC/amp combos. The Vulkan 2 is deemed absolutely worth $700-$800 in sound quality alone, making its sub-$400 price an incredible value proposition. They are so good they instantly become the pair pulled out to show people what a good IEM sounds like. For anyone saving their pennies for a top-tier in-ear experience, the Dunu Vulkan 2 is presented as an essential, nutty purchase.

Z-Reviews original ranking

The Dunu Vulkan 2 boasts exceptional build quality and comfort. Its shell design is praised as extremely nice at any price, fitting securely with a flat two-pin connector, metal nozzle, and helpful anti-tragus catch. The comprehensive accessory package is a major plus, including a pocketable case, 6.3mm and 3.5mm connectors, a cleaning brush, IEM booties, two sets of tips, and a particularly supple cable featuring a screw-lock termination for easy swapping. Everything about the physical presentation feels solid and well-executed.

Sonically, the Vulkan 2 represents an improvement over the original, offering a presentation focused on detail retrieval and a well-done upper mid-range and treble. The overall signature is slightly bright and energetic, leaning towards a treble-focused tonality while still providing sufficient bass to feel rich and supported, though it lacks a thunderous low-end impact. This results in a slightly lean sound that some might find a touch brittle, but the tactful tuning delivers great detail, nice mids, and a presence region comparable to sets like the Moondrop Meteor. Comparisons reveal it has less bass than the DUNU Brain Dance (especially with an impedance adapter) or the Kiwi Ears Astral, but its mid-range and treble presentation are standout strengths.

Despite the slightly lean bass response, the Vulkan 2 emerges as a strong package at its price point. The combination of its superb build, comfort, excellent accessory set, and a detailed, engaging sound signature focused on mids and treble makes it highly compelling. It's recommended for listeners seeking a studio-monitor style presentation rather than a bass-heavy experience. While not a perfect one-and-done for everyone, and a bass adjustment feature like a rumble switch or impedance adapter would be welcome, it stands as a near-endgame option offering great value and quality within the $300-$400 range.

Jaytiss original ranking

Initial skepticism about the Dunu Vulkan 2's significant scoop in the 150-200Hz range quickly faded upon listening. This scoop typically kills rhythmic intensity, slam, and weight, making genres like hip-hop or EDM sound anemic. However, the Vulkan 2 makes it work through a tamer upper midrange compared to Harman targets and a filled-in lower midrange past 200Hz. This creates a smaller contrast (around 7dB difference between peak and mid-bass) than expected, preventing the sound from becoming overly thin or shouty. The result is a surprisingly balanced, neutral, and vocal-centric tonality that excels with artists like SZA, Frank Ocean, or Lana Del Rey on genres such as indie rock, ballads, and acoustic tracks.

This tuning comes with clear trade-offs. The lack of sub-bass is the most significant limitation, making the Vulkan 2 unsuitable for hip-hop, EDM, rap, or movies where rumble and slam are essential. Boosting the sub-bass wasn't feasible without creating an even bigger scoop or ruining the intended neutral, clean vocal focus. Technically, it offers good layering, separation, and a slight bite in transients, with detail and resolution comparable to sets like the Dusk, though not class-leading for its price. It scales well with volume on its preferred genres (around 75-80dB), sounding clearer and more engaging, but falls flat at lower volumes or on energetic pop/EDM where the missing low end hurts balance.

Compared to other neutral/vocal sets like the P50 or Studio 4, the Vulkan 2 is less all-rounded due to its bass deficiency, though it offers slightly better scaling and vocal focus. Bass-centric IEMs like the Odyssey are far superior for low-end engagement. While the vocal presentation is clean and enjoyable within its niche, the $360 retail price is hard to justify. Alternatives like the Volume S (for male vocals) or the Arcanis (for a more immersive, special vocal experience) are better all-rounders that also excel with vocals. The Vulkan 2 becomes a more interesting proposition only if found significantly discounted around $200 as a specialty set for vocal-forward, less bass-dependent genres.

Jays Audio original ranking