How We Research
Updated: 2026-10-04 · 6 min read · Independent comparison
If you want the longest battery life and the most listening flexibility for work and travel, choose Monster Harmonic N22; if you need a lighter, faster-charging set with a wired backup and a gaming mode, choose Ivrydas Headphones.
• Monster Harmonic N22 — biggest strength: up to 110 hours of playback with ANC off, plus three listening modes (ANC, transparency, standard) and 40mm drivers tuned for thick bass.
• Monster Harmonic N22 — biggest trade-off: no headphone jack, so it's wireless-only, and the foldable design leans bulky for pocket carry.
• Ivrydas Headphones — biggest strength: a 3.5mm AUX input, a low-latency game mode, and a battery that charges fully in about 1.5 hours.
• Ivrydas Headphones — biggest trade-off: shorter rated battery life (66H) and a plastic ABS/PC build that feels less premium than the Monster's memory-foam cushioning.
• Who each pick is for: Monster Harmonic N22 → long-haul travelers, remote workers, and bass-first listeners; Ivrydas Headphones → gamers, wired-listening holdouts, and anyone who wants quick top-ups.
The Harmonic N22 is the endurance pick of this pair. Monster rates it at up to 110 hours of listening in ANC-off mode, and the battery spec sheet lists a 60-hour average life with a 2-hour charge time. Fast charging is the practical hook here: 10 minutes of charging is rated for 5 hours of playback, which matters when you're packing for a trip and realize you forgot to plug in.
Sound is where the Monster leans hard into its identity. It uses 40mm dynamic drivers and Monster's own "Pure Monster Sound" tuning, which the brand describes as a full-spectrum profile with heavy, impactful bass and crisp mids and highs. If you mostly listen to hip-hop, EDM, or action-heavy soundtracks, that signature is the point. The three modes — active noise cancellation, transparency, and standard — let you block out a plane cabin, hear a boarding announcement without removing the headphones, or drop into a neutral sound for casual listening.
Comfort and connectivity round it out. The ear cushions are thickened slow-rebound memory foam, the headband adjusts freely, and the whole thing folds. Bluetooth 6.0 handles pairing, and the spec lists dual-device connection plus hands-free calling. Note the connectivity details: there's no headphone jack, so this is a wireless-only headphone. Bluetooth range is listed at 33 feet.
Buy it if: you want maximum playtime, deep bass, and a transparency mode you'll actually use on commutes. Skip it if: you need a wired fallback, you want a low-latency gaming mode, or you prefer a lighter, less bass-forward sound.
The Ivrydas set, model J28, is the more versatile tool in this comparison — less about marathon battery and more about covering every situation. Its noise cancellation is rated at up to -35dB, with a transparency mode for hearing your surroundings and a normal mode for everyday listening. That's a straightforward three-mode setup, and the transparency toggle means you don't have to pull the headphones off to talk to someone.
Battery is rated at 66 hours of playtime, 50 hours of talk time, and roughly 70 hours of standby from a 750mAh cell. The charge time is the standout number: about 1.5 hours via Type-C, which is meaningfully quicker than the Monster's 2-hour rating. If you're the type who charges in short bursts between meetings, that gap adds up.
The feature that separates it most is the 3.5mm AUX jack. The Ivrydas works wirelessly over Bluetooth 6.0 with dual-device pairing and auto reconnection, but you can also plug in the included cable — useful on a plane's seatback screen, on a desktop without Bluetooth, or when the battery is flat. There's also a Low Latency Game Mode aimed at syncing audio with games, videos, and movies.
Audio specs list 40mm dynamic drivers, a 20Hz–20kHz frequency range, 16-ohm impedance, and SBC/AAC decoding. Bluetooth range is listed at 15 meters, and the microphone is rated at -32±1dB for calls. The build is ABS and polycarbonate, and the warranty runs a full year.
Buy it if: you game, you want a wired option, or you want the fastest recharge in this pair. Skip it if: you need the absolute longest rated battery life or you're chasing a bass-heavy, branded sound signature.
Side-by-Side: Which Should You Choose?
• Best for fast recharging → Ivrydas Headphones (about 1.5H to full vs. 2H on the Monster).
• Best for gaming and video sync → Ivrydas Headphones (dedicated Low Latency Game Mode).
• Best for wired listening → Ivrydas Headphones (3.5mm AUX input; the Monster has no jack at all).
• Best for bass-forward music → Monster Harmonic N22 (40mm drivers with Pure Monster Sound tuning).
• Best for longer Bluetooth reach → Ivrydas Headphones (15m rated vs. 33 ft / ~10m on the Monster).
• Best for all-day comfort on long flights → Monster Harmonic N22 (slow-rebound memory foam cushions and a foldable frame).
• Best for warranty peace of mind → Ivrydas Headphones (1-year manufacturer warranty vs. 180 days).
If I were buying one, I'd take the Monster Harmonic N22. The rated battery life is nearly double, the transparency mode covers the commute and travel scenarios I care about most, and the memory-foam cushions plus bass-forward tuning make it the better everyday listening headphone for music and long work sessions. The Ivrydas is genuinely the smarter pick for gamers and anyone who wants a wired backup — its 1.5-hour charge and AUX jack are real advantages. But as a single do-everything wireless headphone, the Monster's endurance wins for me.
which airpods have transparency mode
That question is about Apple's earbuds, but the same idea applies here: both headphones in this comparison have a transparency mode. The Monster Harmonic N22 lists it as one of three modes alongside ANC and standard sound, and the Ivrydas lets you switch to Transparency Mode without removing the headphones. Check the specific model's spec sheet if you're shopping Apple products, since not every generation includes it.
how to turn airpods to transparency mode
On Apple earbuds you typically toggle it through the control center or by pressing and holding the stem. On the Ivrydas Headphones here, transparency is one of the push-button modes alongside ANC and normal listening, so you cycle through it with the on-ear controls. On the Monster Harmonic N22, the same three-mode setup is controlled with its push buttons and voice control.
do all airpods have transparency mode
No — transparency mode isn't universal across every AirPods generation. If that feature matters to you, it's worth knowing that both headphones compared here include it: the Monster Harmonic N22 lists a practical transparency mode for commutes and outdoor travel, and the Ivrydas includes a Transparency Mode toggle next to its -35dB ANC.
how to turn on transparency mode airpods
For Apple earbuds it's usually a press-and-hold on the stem or a swipe in the control center. For the two headphones here, you press the on-ear button to cycle from ANC into transparency mode — the Ivrydas calls this out explicitly, and the Monster's three-mode control works the same way. If you'd rather not fiddle with menus, button controls are the simpler path.
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