Monster Harmonic N20 ANC Over-Ear Headphones, Bluetooth 6.0, 40-Hour Playtime

When your listening routine shifts between focused work, calls and travel, headphones that offer both noise control and easy device pairing can be useful. The Monster Harmonic N20 combines active noise cancellation with Bluetooth 6.0, 40 mm dynamic drivers and an over-ear fit, giving you one headset for music, meetings and time on the move.

Its foldable design and included 3.5 mm audio cable also make it practical to switch between wireless listening and a wired connection. The blue finish adds a distinctive touch.

At a glance

Choose between Noise Cancelling, Transparency and Balanced modes to suit the setting. Noise Cancelling mode helps block distractions for more focused listening, Transparency mode lets outside sound in when you want greater awareness, and Balanced mode retains some ambient sound. Which mode suits the moment? A single tap lets you change the listening mode as your surroundings change.

The 40 mm drivers are designed for immersive stereo audio, while eight microphones support clearer calls. Buyers have highlighted the sound quality and expressed satisfaction with the headphones’ overall performance, adding positive feedback alongside the product’s practical mix of listening and call features.

Everyday use

For a workday, pair the N20 with a Bluetooth-enabled computer or cell phone for music and calls, then use a listening mode that fits your surroundings. On a trip, the over-ear design, foldable construction and wireless connection make it convenient to carry and use without managing a cable. The adjustable headband and soft protein-leather ear cushions are designed for extended wear, whether you are listening at home or settling in for a flight.

Up to 40 hours of playtime supports longer stretches between charges. When you would rather connect directly, use the included 3.5 mm AUX cable, USB-C is used for charging. Compared with a cable-first headset intended mainly for wired listening, the N20 offers Bluetooth use as well as a wired option, plus selectable noise control. That combination suits people who move between wireless listening and a direct connection during the week.

Usage tips

Pair the headphones with a Bluetooth-enabled phone, tablet, computer, MP3 player or TV. Use the controls on the headphones to change music modes, and choose Transparency when you want outside sound to come through. For wired listening, connect through the 3.5 mm headphone jack. The included package contains the Harmonic N20 headphones, a 3.5 mm AUX cable, a Type-C charging cable and a user manual.

Questions before you buy

Can I use the N20 with different devices? Yes. It connects wirelessly to Bluetooth-enabled devices, including computers, smartphones, tablets, MP3 players and TVs.

Can I listen without using Bluetooth? Yes. Connect the included 3.5 mm AUX cable to the headphones’ 3.5 mm jack for wired listening.

What listening modes can I choose? Noise Cancelling, Transparency and Balanced modes let you adjust how much of your surroundings you hear while listening.

Should you buy it?

Worth considering if you want over-ear headphones for music, travel and calls, with active noise cancellation, three listening modes and Bluetooth 6.0 in one foldable design. The wired option adds flexibility for direct connections, while the adjustable fit and up to 40 hours of playtime make the Harmonic N20 a practical choice for a routine that moves between focused listening and everyday use.