Beats Studio Buds+ vs Sennheiser HD 660S2
The Verdict
These headphones serve completely different purposes, making direct comparison challenging. Beats Studio Buds+ are wireless in-ear monitors designed for active lifestyles, offering 6 hours of ANC playback and 36 hours total battery with the case. The 5-minute fast charging and seamless iOS/Android compatibility make them practical for everyday use, though the custom 9.5mm drivers deliver competent but not reference-grade audio. Sennheiser HD 660S2 are wired, open-back over-ear headphones built for serious listening with a 42mm dynamic transducer and demanding 300-ohm impedance requiring a dedicated amplifier. At 260 grams with handcrafted German construction, they offer superior audio fidelity and soundstage but demand a stationary setup and professional-grade equipment investment. If you need portable active noise cancellation for commuting or exercise, Beats Studio Buds+ provide excellent value and convenience. If you're an audiophile with a proper amplifier and stationary listening space, Sennheiser's open-back design rewards careful listening despite higher total system cost. These aren't competitors but rather tools for different audio philosophies.
Who Should Buy
Buy the Beats Studio Buds+ if…
- →Works equally well with iOS and Android — rare for Beats
- →Transparent case is a unique, eye-catching design
- →36 hours total battery with case is exceptional
Buy the Sennheiser HD 660S2 if…
- →Reference-grade sound with improved bass over the original HD 660S
- →Both 6.35mm and 4.4mm balanced cables included in the box
- →Open-back design creates a wide, natural soundstage
Category Scores
Pros & Cons
Beats Studio Buds+
Pros
- Works equally well with iOS and Android — rare for Beats
- Transparent case is a unique, eye-catching design
- 36 hours total battery with case is exceptional
- Improved ANC over original Studio Buds — blocks significantly more noise
- Lightweight at 5 g per bud with comfortable fit
Cons
- No Apple H2 or W1 chip — misses some Apple ecosystem features
- SBC/AAC only — no aptX or LDAC for audiophile Android users
- No multipoint Bluetooth connection
- Transparency mode still not as natural as AirPods Pro 2
Sennheiser HD 660S2
Pros
- Reference-grade sound with improved bass over the original HD 660S
- Both 6.35mm and 4.4mm balanced cables included in the box
- Open-back design creates a wide, natural soundstage
- Lightweight at 260 g for an audiophile over-ear
- Replaceable parts make it a long-term investment
Cons
- 300-ohm impedance requires a dedicated amp/DAC to drive properly
- Wired only — no Bluetooth option
- Open-back leaks significant sound — not for shared spaces
- $499 is steep for headphones that need additional equipment
Full Specifications
| Spec | Beats Studio Buds+ | Sennheiser HD 660S2 |
|---|---|---|
| Active Noise Cancelling | ||
| Type | in-ear | over-ear |
| Weight | 5 g (each) | 260 g |
| Battery | ||
| Battery life | 6 hrs ANC on (9 hrs off), 36 hrs total with case | N/A (wired) |
| Charging | USB-C, 5 min = 1 hr playback | N/A |
| Drivers | Custom 9.5mm dual-element driver | 42mm dynamic transducer, 300 ohm impedance |
| Features | Active Noise Cancellation, Transparency mode, Enhanced Apple and Android compatibility, One-touch pairing on both iOS and Android, Custom acoustic platform with dual-element driver, Find My (iOS) and Find My Device (Android), Spatial Audio with dynamic head tracking (Apple) | Open-back audiophile design, 300-ohm impedance for dedicated amp/DAC use, Balanced 4.4mm Pentaconn cable included, Replaceable ear pads and cables, Handmade in Germany |
| Connectivity | ||
| Wired option | ||
| Codecs | SBC, AAC | |
| Bluetooth | 5.3 | None (wired only) |
| Multipoint | ||
| Water Resistance | IPX4 | None |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in headphones, see all Beats products or all Sennheiser products. View full details for the Beats Studio Buds+ or the Sennheiser HD 660S2.