Planar Magnetic vs Dynamic Headphones: Which Should You Buy?
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This guide compares planar magnetic vs dynamic headphones to help you choose based on specs. Both the ASUS ROG Kithara and Sennheiser HD 650 are open-back wired models designed for high-fidelity audio. They share a similar open-back architecture for natural soundstages. The main difference lies in their driver technology. The ASUS uses planar magnetic drivers for ultra-wide range and low distortion. The Sennheiser relies on dynamic drivers with acoustic silk damping. Understanding these mechanical distinctions will help you decide which fits your listening needs.
Key differences
| Aspect | ASUS ROG Kithara Open-Back Headphones | Sennheiser HD 650 Open-Back Dynamic Headphones |
|---|---|---|
| Driver Type | Planar Magnetic | Dynamic |
| Driver Size | 100 mm | not listed |
| Connectivity | Wired, 4.4 mm, 3.5 mm, 6.3 mm, USB-C | 3.5 millimetre jack plug |
| Microphone | On-cable full-band MEMS boom microphone | not listed |
| Weight | 11.2 ounces | 9.12 ounces |
Which one should you choose?
Choose ASUS ROG Kithara Open-Back Headphones if
- You want versatile connectivity with multiple plug options including balanced 4.4 mm and USB-C
- You need a built-in microphone for gaming or communication
- You prefer larger 100 mm drivers for a specific tonal character
Choose Sennheiser HD 650 Open-Back Dynamic Headphones if
- You prioritize a lighter build at 9.12 ounces for extended comfort
- You seek a classic dynamic driver sound with acoustic silk damping
- You prefer a simpler wired connection via a standard 3.5 mm jack
Verdict: The ASUS ROG Kithara suits users who need versatile connectivity and an integrated microphone for gaming. The Sennheiser HD 650 is ideal for listeners who value a lighter weight and traditional dynamic driver tuning. Your choice depends on whether you prioritize feature versatility or lightweight simplicity.
Planar Magnetic vs Dynamic Specs
Driver Technology
The ASUS ROG Kithara uses 100mm HIFIMAN planar magnetic drivers. This design typically offers low distortion and fast transient response. The Sennheiser HD 650 relies on dynamic drivers with specially designed acoustic silk. This silk provides precision damping across the frequency range. The HD 650 achieves a THD of 0.05 percent. Planar magnetic drivers often provide more detail in complex tracks. Dynamic drivers like the HD 650 are known for warm, natural tonality. Your choice depends on whether you prefer analytical clarity or smooth warmth. The Kithara targets gaming and audiophile fidelity with its ROG-tuned setup.
Frequency Response
The ASUS ROG Kithara features an ultra-wide frequency range for vivid detail. The Sennheiser HD 650 specifies a response from 10 to 39,500 Hertz. This wide range supports Hi-Res Audio certification for the Sennheiser model. The Kithara does not list exact frequency limits in the provided data. However, its planar magnetic design suggests broad coverage. The HD 650 extends into the ultrasonic spectrum, which may affect treble extension. You should consider if extended highs are critical for your source material. The Kithara focuses on balanced fidelity across bass, mids, and treble. Both aim for high accuracy, but the Sennheiser has explicit Hi-Res specs.
Connectivity Options
The ASUS ROG Kithara offers extensive connectivity for modern users. It includes a 4.4mm balanced plug, 3.5mm, and 6.3mm single-ended plugs. A USB-C adapter is also included for DACs and mobile devices. This versatility allows seamless use with PCs, consoles, and amps. The Sennheiser HD 650 uses a standard 3.5mm jack plug. It lacks the multiple connector options found on the Kithara. You may need additional adapters for the Sennheiser if your gear requires balanced inputs. The Kithara’s inclusion of balanced audio support gives it an edge for high-end setups. The HD 650 remains simple but less flexible for diverse connections.
Microphone Quality
The ASUS ROG Kithara includes an on-cable full-band MEMS boom microphone. It offers a 20Hz–20kHz response and high SNR for clear voice pickup. This is ideal for gaming and communication during calls. The Sennheiser HD 650 does not list a microphone in its specifications. It is designed purely for audio listening without built-in communication tools. If you need to chat while gaming or working, the Kithara is the practical choice. The HD 650 requires a separate headset or external mic for voice transmission. The Kithara integrates audio and voice capabilities into one package.
Build and Weight
The ASUS ROG Kithara weighs 11.2 ounces and features a robust metal frame. It has an eight-level adjustable headband for durability and comfort. The Sennheiser HD 650 is lighter at 9.12 ounces. It uses a gray finish and over-ear design. The Kithara is heavier, which may affect long session comfort for some users. The HD 650’s lower weight could reduce fatigue during extended listening. Both use open-back designs for natural sound. The Kithara includes signature ROG elements for a gaming aesthetic. The HD 650 maintains a classic audiophile appearance. Weight and material choices influence how you wear them daily.
Choose Your Planar or Dynamic Headphones
Gamer seeking low latency and clear comms
The ASUS ROG Kithara features a MEMS boom microphone with a 20Hz–20kHz response. This ensures clean voice pickup for team chat. Its 100mm planar drivers provide vivid detail and exceptionally low distortion. The included 4.4mm balanced and USB-C plugs offer seamless compatibility with gaming PCs and consoles for immediate plug-and-play use.
Audiophile prioritizing ultra-low distortion and warmth
The Sennheiser HD 650 uses acoustic silk for precision damping, reducing total harmonic distortion to just 0.05 percent. Its dynamic drivers deliver a frequency response from 10 to 39,500 Hertz. This design emphasizes smooth, natural tonality. The high-efficiency neodymium magnets ensure consistent performance across your entire listening range for critical music evaluation.
Listener wanting versatile connectivity options
You get multiple connection choices with the ASUS ROG Kithara. It includes 4.4mm balanced, 3.5mm, and 6.3mm plugs, plus a USB-C adapter. This variety allows direct connection to DACs, amps, and mobile devices. The Sennheiser HD 650 only provides a standard 3.5mm jack, limiting your direct connection options without additional adapters.
User preferring lighter weight for long sessions
The Sennheiser HD 650 weighs 9.12 ounces, making it lighter than the ASUS ROG Kithara. The ASUS model weighs 11.2 ounces due to its metal frame and larger 100mm drivers. If you wear headphones for many hours, the lighter HD 650 may reduce fatigue. Both use open-back designs for breathability.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | ASUS ROG Kithara Open-Back Headphones | Gaming and audiophile wired listening | Check price of ASUS ROG Kithara Open-Back Headphones on Amazon |
| 2 | Sennheiser HD 650 Open-Back Dynamic Headphones | Audiophiles seeking dynamic driver clarity | Check price of Sennheiser HD 650 Open-Back Dynamic Headphones on Amazon |
The products compared
ASUS ROG Kithara Open-Back Headphones
Best for: Gaming and audiophile wired listening
- Driver Type
- Planar Magnetic (what this guide is about)
- Connectivity
- 4.4mm, 3.5mm, 6.3mm, USB-C
- Driver Size
- 100mm
- Form Factor
- Headband
- Recommended Use
- Gaming
- Microphone
- Microphone
View on Amazon: ASUS ROG Kithara Open-Back Headphones Affiliate link
The ASUS ROG Kithara uses 100 mm HIFIMAN planar magnetic drivers for audiophile-grade fidelity. Its open-back design creates a spacious soundstage with clear separation. You get a full-band MEMS boom mic with a 20Hz–20kHz response. The wired build includes 4.4mm, 3.5mm, and 6.3mm plugs. It weighs 11.2 ounces. This fits gamers and listeners who want vivid detail and low distortion.
Pros
- 100 mm HIFIMAN planar magnetic drivers
- Open-back architecture for natural soundstage
- Full-band MEMS boom microphone
- Multiple wired connection options
Cons
- Wired only; no wireless connectivity
- Heavy at 11.2 ounces
- Requires external DAC or amp for balanced 4.4mm use
Good fit if
- You want vivid detail and low distortion
- You prefer open-back spatial audio
- You need a high-quality wired gaming mic
Skip if
- You need wireless freedom
- You prefer lightweight gear under 10 ounces
- You want plug-and-play Bluetooth use
Verdict: ASUS ROG Kithara Planar Headphones deliver precise planar magnetic sound for gamers who value audio clarity. You should buy them if you prioritize driver fidelity and open-back immersion over wireless convenience.
Sennheiser HD 650 Open-Back Dynamic Headphones
Best for: Audiophiles seeking dynamic driver clarity
- Driver Type
- Dynamic (what this guide is about)
- Form Factor
- Over ear - Open Back
- Connectivity
- 3.5 millimetre jack plug
- Audio Features
- Hi-Res Audio
- Dimensions
- 12.4 × 10 × 4.33 inches
- Weight
- 9.12 ounces
View on Amazon: Sennheiser HD 650 Open-Back Dynamic Headphones Affiliate link
The Sennheiser HD 650 uses dynamic drivers with a frequency response of 10 to 41,000 Hz. Acoustic silk damping reduces total harmonic distortion to 0.05 percent. The open-back design offers a natural soundstage. You get a 3.5 millimetre jack plug for wired connectivity. This model suits listeners who prefer dynamic driver characteristics and high-resolution audio reproduction.
Pros
- Dynamic driver type for familiar sound signature
- Frequency response extends to 41,000 Hz
- Low 0.05 percent total harmonic distortion
- Hi-Res Audio certification
Cons
- Requires separate amplifier for optimal performance
- Open-back design leaks sound and lacks isolation
- Only includes a 3.5 millimetre jack plug
Good fit if
- You want a dynamic driver headphone for critical listening
- You have a dedicated headphone amplifier
- You prefer open-back acoustics for spaciousness
Skip if
- You need wireless Bluetooth connectivity
- You require noise isolation for noisy environments
- You want a lightweight travel headphone
Verdict: Sennheiser HD 650 Open-Back Dynamic Headphones delivers precise dynamic driver performance with low distortion. It fits audiophiles who value open-back acoustics and have the necessary amplification gear.
Specifications side by side
| Spec | ASUS ROG Kithara Open-Back Headphones | Sennheiser HD 650 Open-Back Dynamic Headphones |
|---|---|---|
| Form Factor | not stated | Over ear - Open Back |
| Connectivity | 4.4mm, 3.5mm, 6.3mm, USB-C | 3.5 millimetre jack plug |
| Driver Size | 100mm | not stated |
| Audio Features | not stated | Hi-Res Audio |
| Recommended Use | Gaming | not stated |
| Acoustic Design | not stated | Open-Back |
| Microphone | Microphone | not stated |
| Driver Type | Planar Magnetic | Dynamic |
| Color | Black | Gray |
| Dimensions | 6.7 × 10.2 × 4.3 inches | 12.4 × 10 × 4.33 inches |
| Weight | 11.2 ounces | 9.12 ounces |
| Model | A702 ROG KITHARA/BLK | 508825 |
| Size | not stated | Over ear - Open Back |
Frequently asked questions
Do planar magnetic headphones require more power?
They often need more power to reach high volumes. The ASUS ROG Kithara uses planar magnetic drivers that benefit from strong amplification. This ensures you get the full dynamic range without distortion. If your source device lacks power, the sound may feel weak. Check your amplifier's output before buying.
Are dynamic drivers better for bass response?
Dynamic drivers often produce deeper bass with less effort. The Sennheiser HD 650 uses dynamic drivers with acoustic silk for precision damping. This design typically offers a warm, natural low end. Planar drivers focus more on speed and detail. You should choose dynamic if you prioritize heavy bass impact over ultra-fast transients.
Which type is lighter for long sessions?
Dynamic headphones are generally lighter than planar models. The Sennheiser HD 650 weighs 9.12 ounces, making it comfortable for long listening. The ASUS ROG Kithara weighs 11.2 ounces due to its planar magnetic construction. Heavier cans can cause fatigue during extended gaming or mixing sessions. Weight matters if you wear headphones for hours daily.
Do open-back designs leak sound?
Yes, open-back designs allow sound to escape. Both the ASUS ROG Kithara and Sennheiser HD 650 feature open-back acoustics. This provides a wide, natural soundstage but lets noise out. You should not use these in public or shared spaces. Closed-back models are better for privacy and noise isolation in noisy environments.
Are planar magnetic headphones durable?
Planar drivers have thin diaphragms that require careful handling. The ASUS ROG Kithara uses 100mm HIFIMAN drivers that need protection from moisture and impact. Dynamic drivers like those in the Sennheiser HD 650 are often more robust. They can handle rougher treatment better. Planar models demand more respect to maintain their precise audio performance over time.
Can I use these for gaming chat?
Yes, if they include a microphone. The ASUS ROG Kithara features a MEMS boom microphone with a 20Hz–20kHz response. This ensures clean voice pickup for team communication. The Sennheiser HD 650 does not list a built-in microphone in its specs. You would need an external mic for clear chat while using the Sennheiser model.