1more SonoFlow PRO HQ51 Brown Wireless On-ear headphones

Hi-Res Wireless Over-Ear Headphones with QuietMax ANC

The SonoFlow PRO HQ51 Brown over-ear headphones bring studio-grade audio to everyday listening. Built around 40mm diamond-like carbon drivers and dual Hi-Res gold certification, this model streams LDAC-encoded audio at up to 990 kbps — roughly three times the data rate of standard Bluetooth codecs. QuietMax dual-feed active noise cancellation reduces external noise by up to 45 dB, making the HQ51 a strong match for commuters, remote workers, and frequent flyers who want a quieter listening environment without paying flagship prices.

What Makes the SonoFlow PRO HQ51 Stand Out

Two design choices separate this model from typical budget ANC headphones. First, the 40mm drivers use a diamond-like carbon (DLC) coating — a material usually reserved for higher-end models — which extends the frequency response up to 40kHz and keeps distortion low across the range. Second, the sound signature is tuned by Grammy-winning engineer Luca Bignardi, giving the HQ51 a balanced, natural presentation rather than the bass-heavy tuning common in this price tier.

Technical Specifications

The spec sheet covers the essentials a buyer needs to compare this model against competitors in the under-€100 ANC category. Driver size, ANC depth, battery endurance, and codec support are the four numbers that matter most for daily use.

• Driver Size: 40mm diamond-like carbon dynamic drivers — frequency response extends up to 40kHz
• ANC Depth: QuietMax dual-feed, up to 45 dB noise reduction — with adjustable modes via the 1MORE app
• Battery Life: 100 hours (ANC off) / 65 hours (ANC on) — 5-minute quick charge delivers 10 extra hours
• Bluetooth Version: 5.4 with LDAC and AAC codec support — 10m wireless range, multipoint pairing
• Weight: 246 g — soft protein leather ear cushions, foldable design with hard carrying case included

Who the SonoFlow PRO HQ51 Is For

The SonoFlow PRO HQ51 Brown is the right choice for budget-conscious listeners who want LDAC Hi-Res streaming and effective ANC without stepping up to flagship pricing. Android users benefit most from the LDAC codec for high-resolution streaming from services like Tidal, Amazon Music Unlimited, and Apple Music on Android. iPhone users get reliable AAC playback and the same ANC and battery performance. Frequent travelers will appreciate the 100-hour battery endurance, the included hard carrying case, and the 3.5mm wired fallback for in-flight entertainment systems.

1MORE and the SonoFlow Line

1MORE has built its reputation on delivering multi-driver in-ear monitors and over-ear headphones tuned by award-winning engineers, with a focus on Hi-Res audio certification at accessible price points. The SonoFlow PRO HQ51 represents the brand's flagship over-ear wireless model, combining LDAC support, diamond-like carbon drivers, and Grammy-level tuning in a package aimed squarely at the budget ANC segment.