OM-123 Comparison
| photo | price | summary | rating |
|---|---|---|---|
 | $60.00 | Condition is For parts or not working, Vintage KOSS ESP-6 ELECTROSTATIC STEREOPHONES Repair / Parts Untested Headphones, shipping cost = $16.40 | 99.9% |
 | $127.49 | Condition is For parts or not working, READ/UNTESTED - CLEAN Vtg KOSS ESP6A Electrostatic headphones W/ Case FREE SHIP, FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
 | $649.00 | Condition is Used, KOSS ESP-6A Electrostatic Headphones + T-3 Energizer + Case Vintage Audiophile, shipping cost = $50.00 | 0.0% |
| photo | price | summary | rating |
|---|---|---|---|
 | $19.69 | Condition is Very Good, Koss ESP-9 ESP-7 ESP-6 Pro-4AA Pro-4A Headphones Brochure Catalog Booklet 1970, shipping cost = $10.84 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
 | $19.69 | Condition is Good, Koss ESP-6 Electrostatic Headphones Magazine Ad Audio Mag November 1968, shipping cost = $10.84 | 100.0% |
The Koss OM-123 ESP.6 Electrostatic Stereophone Headphones offer an extraordinary listening experience for audiophiles seeking the pinnacle of sound quality. These headphones represent a unique and innovative design in the realm of high-fidelity audio, utilizing electrostatic technology that sets them apart from traditional dynamic or magnetic headphones.
The Koss OM-123 ESP.6 headphones are characterized by their open-back, over-ear design, which allows for a spacious and immersive soundstage. The large, 6 micron thin diaphragms are capable of reproducing an incredibly wide frequency response range, from 10 Hz to 30 kHz. This extended frequency response translates into a detailed and accurate sound reproduction, allowing listeners to hear every nuance and subtlety in their music.
The electrostatic technology used in these headphones generates sound by applying a high voltage charge to the diaphragms, which then attract and repel against a statically charged stator plate. This results in a more accurate and precise sound reproduction, with a remarkable clarity and transparency that is often unattainable with other types of headphones.
The headphones are lightweight and comfortable to wear, with a sleek and modern design. The headband is made of a durable and flexible material, while the ear cups are generously padded for added comfort during extended listening sessions. The headphones also come with a detachable, 10-foot long cable, which provides ample length for use at home or in a studio setting.
The Koss OM-123 ESP.6 Electrostatic Stereophone Headphones require a dedicated amplifier or preamplifier to power them, as they do not have an internal amplifier like dynamic or magnetic headphones. This may add an additional cost and complexity to the listening setup, but the reward is a truly exceptional and engaging listening experience that is sure to impress even the most discerning of audiophiles.
In summary, the Koss OM-123 ESP.6 Electrostatic Stereophone Headphones offer a unique and unparalleled listening experience for those seeking the very best in sound quality and fidelity. With their wide frequency response range, precise and accurate sound reproduction, and open-back design, these headphones are a must-have for any serious audiophile or music enthusiast.
The Koss OM-123 ESP.6 Electrostatic Stereophone Headphones are a unique and high-performance audio solution, offering a distinct listening experience compared to traditional dynamic headphones. Here are some pros and cons that can help you decide if these headphones are the right choice for you.
Pros:1. Exceptional Sound Quality: The Koss OM-123 ESP.6 headphones deliver clear, detailed, and accurate sound with a wide frequency response range. Their electrostatic design offers a more spacious and airy soundstage, making them ideal for audiophiles who value sound quality above all else.
2. Lightweight and Comfortable: Weighing only 12.3 ounces, these headphones are lightweight and easy to wear for extended periods of time. They also come with a comfortable headband and earcups, ensuring a pleasant listening experience.
3. Detachable Cables: The Koss OM-123 ESP.6 headphones come with detachable cables, making it easier to replace them if they get damaged.
4. Durable: These headphones are built to last, with a solid construction and sturdy materials. They can withstand regular use and are less prone to damage compared to some other high-end headphones.
5. Affordable: Compared to other electrostatic headphones in the market, the Koss OM-123 ESP.6 are relatively affordable, making them an excellent value for audiophiles on a budget.
Cons:1. Complex Setup: Setting up the Koss OM-123 ESP.6 headphones requires a power source, such as a battery or a dedicated electrostatic headphone amplifier. This can be a drawback for those who prefer a simpler setup.
2. Limited Compatibility: These headphones are not compatible with all audio sources, as they require a specific voltage and impedance to function properly. They are best suited for use with high-quality audio sources, such as a dedicated stereo system or a high-end headphone amplifier.
3. Size and Portability: The Koss OM-123 ESP.6 headphones are larger than most dynamic headphones and may not be as portable. They also require a power source, which can make them less convenient for travel.
4. Sensitivity to Electricity: Electrostatic headphones are sensitive to electricity, which can make them more prone to interference from external sources. This can affect the sound quality and require careful setup and positioning to minimize interference.
5. Limited Bass Response: Compared to dynamic headphones, electrostatic headphones can have less bass response. This can be a drawback for those who enjoy a strong bass response in their music.
Conclusion:The Koss OM-123 ESP.6 Electrostatic Stereophone Headphones offer exceptional sound quality, comfort, durability, and affordability, making them an excellent choice for audiophiles who are willing to invest in a high-performance listening experience. However, their complex setup, limited compatibility, size and portability, sensitivity to electricity, and less-than-ideal bass response may be disadvantages for some users. Ultimately, the decision to purchase the Koss OM-123 ESP.6 headphones depends on your personal preferences and listening habits. If you value sound quality above all else and are willing to invest in a dedicated audio setup, these headphones are definitely worth considering. On the other hand, if you prefer a simpler setup, more portable headphones, or a strong bass response, other options may be more suitable for you.
Details:
The headphones have been tested and appear to be functioning properly. Nice physical condition. The case latch is broken. They do have that vintage electronic material smell for better or worse.
Condition notes:vintage Koss ESP.6 OM-123 electrostatic stereophones headphones tested/read. Please see photos. You are purchasing a vintage Koss ESP.6 OM-123 electrostatic stereophones headphones tested/read in used condition.
specifications vintaspeaker:
- brand: Koss
- mpn: Om-123
- model: Koss Esp.6 Om-123
- part type: Headphone
shipping vintaspeaker:
- type: calculated
- service: fedex ground or fedex home delivery
- class: standard
- carrier: fedex
- transit: 3-8 days
general vintaspeaker:
- category: Electronics > Audio Video > Vintage Speakers
payments vintaspeaker:
- credit card: mastercard
- other
- wallet: paypal
offer vintaspeaker:
- best offers: true
- started: march 3, 2025
- prices: $19.69–$649.00
- item condition:
- For parts or not working
- Used
- Very Good
- Good
- availability: in stock
- options: ship-to-home
- in stock #: 5
- sold #: 20
seller vintaspeaker:
- # reviews: 41465
- city: fort wayne, indiana
- rating: 99.5%
returns vintaspeaker:
- paid by: seller
- method: money back
- policy: returns accepted
- time: 30 days