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Sennheiser HD 280 Pro - Black

Professional Over-Ear Studio Monitor Headphones with Swiveling Ear-Cups

In Stock. Only 2 Left!

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Sennheiser HD 280 Pro - Black



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• Water Resistant Portable Wireless Bluetooth Speaker
• 6W Total Speaker Output
• Left and Right Channel Passive Subwoofers
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• 33' Operating Distance
• 12 Hour Play Time

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The Sennheiser HD 280 Pro:

The HD 280 Professional is Sennheiser's most significant closed, circumaural headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD280Pro boasts extremely robust construction combined with extensive features that meet the requirements of today's most demanding applications. The unique collapsible design combined with swiveling ear cups, offers maximum flexibility in any application.

What's In The Box?
  1. Sennheiser HD 280 Pro
  2. Single Sided 9.8 Foot OFC-Cable
  3. 6.3mm to 3.5mm adapter
  4. Owners Manual
  5. Authorized 2-Year Warranty

Product Features:

Product Specifications:
  • Speaker Principle: Dynamic Driver
  • Ear Coupling: Circumaural, Closed
  • Magnet Type: Neodymium Magnets
  • Frequency Response: 8 Hz - 25,000 Hz
  • Nominal Impedance: 64 Ohms
  • Sensitivity: 102 dB SPL, (at 1 kHz/1Vrms)
  • Maximum Input Power: 500 mW
  • Noise Isolation: Up to 32 dB of Ambient Noise Attenuation
  • Total Harmonic Distortion: Less Than (<) 0.1%
  • Cable Type: Single-Sided Coiled Cable
  • Cord Length: 9.8 feet (3 Meter)
  • Weight (Without cable): 285 grams

Also Found As: Sennheiser HD280 Pro, Sennheiser HD 280PRO, Sennheiser HD280PRO, Sennheiser HD 280 PRO

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.

Musical Production / Recording Artists
Acoustic Principle
The basic design of the headphones. There are 3 different types: Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source. Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room. Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.

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).
8 - 25,000 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
102 dB
Driver Type
The physical design of the driver in the headphones.
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
64 ohms
Primary Color
This is the main color of the item.

Specials with this Item

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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


Southbridge, Massachusetts, United States, 01550, MA 01550


February 14, 2014

Heavy duty, wonderful sound, well worth the cost. Just the thing when you must share a living space.

3 of 5 found this helpful

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Don't By Sonic Electrix Products!

Sudbury, MA

Good Product, but DON'T BY FROM THIS COMPANY!!

May 21, 2014

Good earphones, but not the ones I ordered. Took over 3 months to get any replacement, was given a complete run around by the service staff. If you are looking to get the S HD 280 Pro, get them somewhere else. As for sound, very neutral. If you are looking for heavy beats, not these, but they are crystal clear for a lot of applications. Very comfortable.

3 of 6 found this helpful

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May 14, 2014

good sound reduction, I am using for ham radio headphones. I use in a noisy basement, and these really added quality audio while in turn reducing the ambient noise in the area.

2 of 5 found this helpful

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Van Nuys, CA

Pretty great, especially for the price.

January 17, 2012

I've been using these headphones since Mar. of 2009 and have been pretty content ever since. I mean, sure, higher-end headphones do exist, but usually they're way more expensive and designed for content that isn't as accessible as MP3s and such. Honestly, it astonishes me (and yet not) that people spend exorbitant amounts of money on designer headphones (Which rapper will throw their hat into the ring next, I wonder?!) when they can have perfectly fine headphones like these for a fraction of the price.

Rest assured, you can easily put your faith in the Sennheiser name. They've been making audio products for over 65 years now, so I imagine they know a thing or two about quality.

2 of 5 found this helpful

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Accessory Tools and Products

Accessories added

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Single Input and Output 1/8" (3.5mm) Interface and USB Rechargeable Battery

Your Price $27.99

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 2 questions and 4 answers
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Why did you choose this?
Sonic Electronix Store
My last two pairs of headphones were sennheiser and i was more than satisfied with the sound quality. In that tradition i ordered hd 280. Hope they won't dissapoint.
ivan k on Oct 29, 2014
do i need an amplifier ?
A shopper on Nov 30, 2014
Best Answer: Hello,

The Nominal Impedance of 64 Ohms means you do Not need a Portable Amplifier - if That is what you are referring to. However, there is no doubt that an amplifier will Improve the output of the headset, and therefore improving the overall performance.
Reply · Report · Customer SStaff on Nov 30, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number

HD 280 PRO





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 280 Pro - Black

  • Headphones Based on Musical Preference | What Type of Listener Are You?
  • Headphone Acoustic Principles