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Pioneer SE-MJ751I (SEMJ751i) Steez 808 Dual Driver Headphones

Steez 808 Dual Driver Headphones (40 mm for Lows/30 mm for Highs) w/ Built-In Smartphone Microphone


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General Features:

  • Steez 808 Dual Driver Headphones With Microphone
  • On-ear design
  • Large 40mm speaker driver produces amazingly clear sound
  • Apple-Certified In-Line Microphone With Volume, Skip/Back and Answer/End Buttons
  • Single-Sided Cord
  • Tangle-free cable for convenient listening
  • Adjustable headband for comfortable listening sessions
  • Designed with a snug fit for active people
  • Nickel-plated, corrosion-resistant stereo jack
  • Great for computer gaming, Skype, etc
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Frequency Response: 8-28,000 Hz
  • Sensitivity: 104 dB
  • Nominal Impedance: 16 Ohms
  • Cord Length: 1.2m

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).
8 - 28000 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".
104 dB
Driver Size
This refers to the diameter of the driver (speaker) on each side of the headphone.
40 mm
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.
16 ohms
Primary Color
This is the main color of the item.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Brunei Darussalam

Clean look. Sounds great. Great Value.

September 18, 2013

i couldn't help but to compare this to Solo Beats. I prefer this than Beats. You pay Pioneer Headphones for their sound. The bass is just right, mids are very clear. I'm not an audiophile but I know enough to tell this headphones are worth paying. They're very light, sounds great, u can have both at a great price.

2 of 2 found this helpful

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Cerritos, ca

Great Product

September 17, 2013

Great product at a good price. Excellent sound quality and plenty of bass

2 of 2 found this helpful

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North Palm Beach, Florida

Best Headphones Ever

June 10, 2013

These Pioneers are without the best headphones I have ever owned, the quality of sound coming out is second to none. These are so good I bought 1 for each family member because they kept using mine. I particularly love the bass control its accurate and smooth. I have had many top of the line headphones and the Steez 808's are the best!

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Marquette, MI


January 16, 2013

Got these headphones for Christmas and boy am I happy.
They are extremely comfortable and the sound is amazing.
For the price they are a steal. Many of my friends have
Beats, and personally I think these are way better. Not just
for the price but the sound is way better. Also, the bass
adjustment on the left ear is a nice bonus. Get these and
you will be happy you did.

3 of 4 found this helpful

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Orlando, FL

Value is Wonderful

November 13, 2013

I've had them now for about 3 weeks and i must say.. Pioneer is still my brand and always will be in car and over ear.. Dre Beats may have some competition in my opinion!

1 of 1 found this helpful

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Terence M

Memphis, TN

Nothing to Complain about.

November 27, 2013

The sound is what I expected. The second driver dishing out highs is not intruded by lows. Mids are as audible as they should be and these headphones offer great clarity and a not muddy sound signature. However, without equalization the second (tweeter) driver will sound a bit harsh/sparkly at higher volumes but that is a easy fix. I don't understand why the bass adjustment knob increases frequencies so low, but It does(seems like 15-30hz). So It wont be noticed listening to anything that isn't low bass heavy. I feel that the bass adjustment should increase/decrease frequencies a little higher than what it does(more like 40-50hz). They sound excellent for the price range and Id buy them again, and again. I only despise the steez logo plastered on the side.

The impedance being 16 ohms, they get very loud on any device. Amplification is completely unnecessary although I do it anyway via Pioneer VSX-70.(Great receiver btw)

1 of 2 found this helpful

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Santa Monica, Ca

great value

October 20, 2013

Both my husband and I are satisfied with the product.

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Product Summary


Model Number

SE-MJ751I Steez 808





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: Pioneer SE-MJ751I (SEMJ751i) Steez 808 Dual Driver Headphones