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Sennheiser HD 650 (HD650)

Premium Audiophile-Grade Hi-Fi Professional Stereo Headphones with Clear Open-Air/Open-Back Design

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List price $499.95

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Beyerdynamic T1 Tesla



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Sennheiser HD 650 (HD650)


Special Price $0 ($399.00 if purchased separately)

Sennheiser HD 650 (HD650)

Get a free pair of Sennheiser HD 650 w/ Purchase!

Get a free pair of Sennheiser HD 650 Premium Audiophile-Grade Hi-Fi Professional Stereo Headphones w/ Purchase!




Sennheiser HD 800 (HD800)



100% OFF

Sennheiser HD 650 (HD650)


Special Price $0 ($399.00 if purchased separately)

Sennheiser HD 650 (HD650)

(Offer 1 of 2)

Combined Total Price


You Save $399.00

Sennheiser Audio Store

Audiophile, Premium, Best In-Class, Sennheiser

The Sennheiser HD 650 Headphones Offer an Incredible Listening Experience

The Sennheiser HD 650 Hi-Fi Professional Stereo Headphones will put you right in the middle of your favorite artist's recording sessions. These premium audiophile-grade open-back headphones were carefully designed to provide you with truly natural sound image to make you feel like you're sitting in the same room as the music you are listening to. These superbly balanced headphones provide the classic Sennheiser sound quality you're accustomed to. Hand picked components, special acoustic materials and out-of-this-world engineering ensure the HD 650's provide you with the absolute best sound possible. The HD 650 will captivate your senses and offers total immersion into a sea of music; letting you completely disregard your surroundings and be taken away into your imagination. Life truly is too short not to treat yourself to the phenomenal listening experience of the HD 650.

The Sennheiser HD 650 Headphones Offer an Incredible Listening ExperienceLegendary Sennheiser Sound

The HD 650's feature such authentic, natural sound reproduction that you'll never want to take your headphones off. Innovative technology like a specially developed acoustic silk and hand selected drivers all but eliminates harmonic distortion while the lightweight aluminum voice coils provide a lightning fast transient response time. The open back design completes a truly immersive listening experience.

Comfort to Match the Sound QualityLuxurious Comfort

Immaculate Sennheiser workmanship created in the HD650's, some of the most comfortable headphones ever designed. The elliptically shaped earpads fully enclose the ear, providing both a natural, comfortable fit as well as outstanding noise isolation. With luxuriously padded earcups and an amazingly soft headband, you will be able to enjoy hours of absolute comfort while you get lost in your headphones.

OFC Quality SoundSpecially Designed OFC Cable

Sennheiser spared no detail when designing the HD 650's, including the cable. What's the point of having a premium pair of headphones if the cable isn't capable of keeping up? Sennhesier specially designed a high quality 100% Oxygen Free Copper (OFC) cable for the HD 650s to ensure your audio signal's are never distorted. This resilient detachable cable features a Kevlar fiber reinforcement for incredible durability.

I found the HD650s strike an incredible balance of presence, reality, resolution, and detail, all while still managing to be just plain fun to listen to.

- Justin Peacock,

Product Features:

  • Top-of-the-range open, dynamic hi-fi stereo headphones
  • Systems with narrow tolerances (+/- 1 dB), hand-picked in pairs
  • Titanium/silver finish
  • Acoustic silk for precise, uniform attenuation
  • Specially modulated connecting cable (detachable) made from highly conductive Kevlar-reinforced OFC copper
  • Very low handling noise, i.e. low structure-borne sound sensitivity
  • Lightweight aluminium voice coils ensure excellent transient response
  • Luxurious, Comfortably Padded Ear Cushions with Firm Foam Support Provide Platinum Grade Comfort
  • Sennheiser HH 10 Universal Holder (Mount) Available
  • Elliptical design adapted to the shape of the ears
  • Directly connect to hi-fi components such as SACD & DVD-A
  • Premium Grade 1/4 Inch Adapter with Flexible 6 Inch Cable
  • Primary Color Tone: Premium Quality Silver/Titanium Finish (Gray/Grey)
  • Manufacturer Part Number: 009969
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty


  • Cable Length: 9.8 ft. (3 m) detachable single-sided OFC copper cable, Model 092885
  • Contact pressure: 2.5 N
  • Ear Coupling: Around-the-ear
  • Frequency Response (headphones): 10-39,500 Hz
  • Jack Plug: 6.3 mm/3,5 mm Stereo
  • Nominal Impedance: 300 ohm*
  • Sound Pressure Level (SPL): 103 dB (1V RMS)
  • Total Harmonic Distortion (THD): ≤ 0.05%
  • Transducer Principle: Open-aire, dynamic
  • Weight (w/o cable): 9.2 oz. (260 g)

What's in the Box?

Sennheiser HD 650 What's in the Box?
  1. Sennheiser HD 650 Professional Stereo Headphones
  2. Detachable 3 Meter Headphone Cable
  3. 1/4" to 1/8" Adapter (6.35-to-3.5mm)
  4. Protective Storage Case
  5. Owner's Manual

* Due to the high impedance rating, we at Sonic Electronix emphatically recommend that you purchase a headphone amplifier with these headphones in order to get the best results possible.

Headphone Design

Headphone Type

Headphone type refers to the construction of the headphones.

Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.

Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.

Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.

Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.

Over the Head
Earpiece Design

This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.

In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.

Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.

On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.

Specifically For
Some headphones can use an IR Transmitter in your vehicle, while some can be plugged into your media device and be used on the go or at home.

This is the lifestyle that the headphones are designed for. Each style has unique features that make it perfect for particular people.

Designed for those that are active. These headphones are made to stay in the ear during workouts. Whether you frequent the gym a lot or go running outside in the fresh air, these active style headphones will be your best friend.

For those that need the best in music quality. These audiophile headphones are engineered to produce high fidelity and accurate audio replication.

Disc Jockeys (DJs) require a special type of headphone that can meet their professional needs. These headphones are durable, loud, and will often allow for one ear listening.

Fashion Enthusiast:
For those that want to make a fashion statement with their headphones. Not only are these headphones designed with great sound quality in mind, but also great looks!

This lifestyle speaks for itself! If you love video games and want a pair of headphones that will deliver explosive sound and allow you to communicate with others, this is where you need to shop!

Music Lover:
These headphones are made to sound great. They are designed to produce rich, brilliant sounds that will play your music in a manner that the artists would appreciate. These headphones are for those that love music.

Musical Production / Recording Artists:
You're a music creator. Whether you're producing and mixing it down or in the studio recording yourself, you need a pair of headphones that will reproduce the music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Headphones need to be affordable and durable to keep up with the student lifestyle. A variety of styles can be considered a pair of student headphones.

Those that often find themselves on planes or on the road a lot. These headphones are compact, lightweight, and have a portable design. Some of the headphones in this lifestyle will feature noise cancellation technology that will help shut out outside noise.


General Features

Noise Reduction technology removes unwanted noise from a signal. Background or ambient noise can be removed to produce clearer speech and enhanced hearing. Typically these Active Noise Canceling (ANC) headphones are powered and use batteries to activate the noise canceling technology. Also referred to as Noise Reduction or Noise Cancellation.
Headphone Connection
This is how the headphones connect to the audio source.

Corded means that the headphones use a cord to transfer the audio signal.

Wireless means that the audio signal is transmitted wirelessly to the headphones.

1/4" Stereo Jack Adapter
Some headphones will come with a 1/4" stereo jack adapter to connect the usual 3.5mm jack to a 1/4" stereo plug.

1/4" Stereo jack is a larger audio jack that select electronics have.

Volume Adjustment
Volume Adjustment means that the headphone (independent of the source) can adjust the playback volume. Many headphones and ear buds have in-line volume control, which allows adjusting the audible volume from a switch on the headphones cord. Other headphones have a volume knob on the headphone can.
Built-In Microphone
This means that the headphones or earbuds have a built-in microphone. This can be a microphone on the cord, built into the headphone, or even a boom microphone. These mics can be used for music devices like iPods, for Smartphones to make and receive calls, or for gaming purposes.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
10 - 39,500 Hz
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
300 ohms
Primary Color
This is the main color of the item.

Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Los Angeles CA

HD 650

May 22, 2013

I was very pleased with the Sennheiser hd650 headphones. They are very spacious and present. These cans have some serious output impedance and need to be used with an amplifier to get their full potential. Over all I would say these are an incredible value.

10 of 17 found this helpful

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New York


January 11, 2015

This is one of the most easily recognized and well regarded high end headphones in the past 20 years. I've read a lot of reviews on this, but after purchasing it for myself, the sound that came through was very full and warm, with a mid-range soundstage and a substantial but not punchy mid-bass. I think I hear the "veil" that a lot of audiophiles talk about, which comes through as a slightly dark treble and mids. However, this seems to affect vocals very little. Some may be bothered by this, but I'm definitely not.

Anyways, Sonic Electronix offered a great price for these, and I'm quite satisfied with the product, the value, and the service.

7 of 15 found this helpful

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Durham, NC

Great audiophile headphone at a reasonable price

May 18, 2014

I bought the HD 650 while on promotion at Sonic Electronix. Though I expected this to be a quality product, it was still very impressive when I first opened the box. The headphone is well designed and looks high-end.
Compared to my Grado SR 60i and Audio-Technica ATH-M50, the HD 650 has much richer and more precise sound. It is more comfortable to wear than the 60i and comparable to the M50.
At 103 dB, it is a highly efficient headphone. I can hear a lot of details in the music than with the other two headphones. With 300 ohms, it means low distortion but also means it is better to be driven by a dedicated headphone amplifier. I am now using a CEntrance DACport to drive it. The sound is acceptable, though I suspect it would sound more louder and better if I had a more powerful amplifier. But for now, I am satisfied with the performance. Overall, I am happy with this purchase. For new users who don't have a dedicated amplifier, make sure you maximize the volume bar on the music player on your computer; otherwise you might think the HD 650 is too hard to drive. I did not realize this problem when I used the HD 650 for the first night, my heart sunk when the sound from the headphone was so low. Previously, it was not much an issue with my M50 as that one is much easier to drive and it is loud enough even the player on my computer is set at the medium volumes. Not the case for the HD 650.
I am also pleased with the purchase experience with Sonic Electronix.

6 of 14 found this helpful

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Mr. Ugly Man

Palo Alto, CA

Pretty Amazing

May 22, 2013

Things I like:
Snug fit but comfortable
Sexy looking headphones (like me, lol)
well balanced, crisp clear sound and open sound makes echos from instruments sound amazing.
good for jazz, oldies, and vocals (sounds amazing on Hide & Seek by Imogen Heap)

They don't sound bad but not my favorite when I was listening to hip hop, dubstep or other music with heavy bass. They don't have that impact you would expect when listening to those types of music. I prefer my Beyerdynamic DT990s for that. With that being said I would choose the HD650 for every other type of music. I really went back and forth between the two but really couldn't choose one over the other so I just went ahead and got these as well. That may seem like a lot of money but when you listen to music all day it's definitely worth the investment. It's nice to treat yourself well every now and then.

5 of 12 found this helpful

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Media, PA

Step up to the HD 650

September 19, 2014

After two years with the HD 598, the HD 650 is a step up headphone for me. The HD 598 is very good but I was curious about taking my listening to the next level. I had been endlessly reading and watching reviews. Finally, after an opportunity to listen to the HD 650 as well as some other contenders, I made my move. This is a terrific headphone: smooth, detailed, non-fatiguing, with deep, warm bass response. The clamping pressure is somewhat tight but by no means uncomfortable. The HD 650 sounds excellent out of my AV receiver and Fiio X3 on high gain setting. It sounds even better with a dedicated headphone amplifier.
I'm very happy with my choice. Sonic Electronix offered a great sale price and fast shipping.

6 of 15 found this helpful

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Hazlet, NJ

Great Headphones

May 18, 2014

I'm not an audiophile and I haven't owned many headphones, so I can't really be technical about this. All I know is the HD 650 sounds very good with the built-in amp in my sound card. It is comfortable to wear in long periods and the build quality is pretty good.

7 of 17 found this helpful

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Accessory Tools and Products

Accessories added

FiiO E7

USB Rechargeable Portable Headphone Amplifier and DAC with Two 1/8" (3.5mm) Output Jacks for Two Headphones

Your Price $79.00

StreetWires ZN5XF35

ZeroNoise 5 Series 3.5mm (1/8") mini-jack extension cable with oxygen-free copper wire

Your Price $16.95

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Browse 1 question and 9 answers
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Why did you choose this?
Sonic Electronix Store
Very, very, well reviewed in multiple trustworthy sources.
Abner J C on Jan 25, 2015
Great headphones at a great price, I've done a lot of listening with these in the past and the auditory reproduction they're capable of us is gorgeous.
Max K on Nov 29, 2014
I got jealous of the Bose headphones I bought my wife for christmas, and I hear these are better
Connor W on Jan 15, 2015
Peter N on Nov 28, 2014

Product Summary


Model Number

HD 650





Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sennheiser HD 650 (HD650)

  • Sennheiser HD 650 (HD650) Open-Back Over-Ear Audiophile Headphones
  • Headphones Based on Musical Preference | What Type of Listener Are You?
  • Headphone Acoustic Principles