This unit has been professionally checked, serviced and tested before listing.
A working video can be provided before shipping.
We provide careful international packaging, insured shipping and 30-day functional warranty.
This is a collector-grade vintage audio item, not a random untested unit.
šļø Time that still sounds
The Klein + Hummel OY is a rare vintage German active 3-way monitor pair with a natural, lively and highly comfortable presentation. These speakers are valued not only for their sound, but also for their place in studio audio history.
Unlike standard passive speakers, the OY was designed as a complete active monitoring system, where drivers and amplification work together. This gives the sound a direct, controlled and honest character that many vintage audio lovers and collectors appreciate.
š§ Why this model is special
The OY is historically important because it is recognized as one of the earliest active studio monitors ever made. Introduced in the late 1960s, it represents an important step in professional monitor design and remains a very collectible piece today.
š§ Key features
ā¢ Rare active 3-way German studio monitor pair
ā¢ Natural, open and highly comfortable sound
ā¢ 240 mm woofer with paper cone and strong magnet system
ā¢ 100 mm midrange driver with level adjustment
ā¢ 19 mm Electro-Voice T35 horn tweeter with level adjustment
ā¢ Fully working condition
ā¢ Cosmetic condition shown in the photos
š¦ Dimensions & Weight
Dimensions (W Ć H Ć D):
48 Ć 31 Ć 23 cm
18.9 Ć 12.2 Ć 9.1 in
Weight:
16 kg each
35.3 lb each
āļø Technical Information
Model: Klein + Hummel OY
Type: Active 3-way studio monitors
Made in: Germany
Year: approximately late 1960s
Woofer: 240 mm paper cone
Midrange: 100 mm paper/wool cone, adjustable
Tweeter: 19 mm Electro-Voice T35 horn, adjustable
Rated LF power: 30 W
Rated MF/HF power: 30 W
Crossover frequencies: 500 Hz / 3000 Hz
This pair is ideal for collectors, studio audio enthusiasts, and buyers looking for rare vintage active monitors with real historical significance. Items like this are becoming harder to find in complete, working condition.
š Follow Our Store Now
Click "ā„ Save This Seller" to be the first to receive updates on rare vintage audio products and special offers.
š Product Description
The first image is an AI-generated promotional visual and may differ from the actual item.
All subsequent photos are part of the description and show the actual item and its condition.
Demonstration tapes, reels, records, or accessories shown for demonstration purposes are not included unless explicitly stated.
Please check the voltage requirements in your area; Adapter not included.
š Warranty and Service
Includes a 30-day global OPT warranty.
You will receive a product and packaging inspection video before shipping.
Repairs, maintenance, and extended warranties are available upon request.
š¦ Shipping
Shipping within 2-3 business days after payment.
A tracking number will be provided.
Items are shipped from the USA, Poland, or Ukraine. Standard shipping takes approximately 10 business days.
Import duties, taxes, and customs fees are the responsibility of the buyer.
š Worldwide Shipping
I have 20 years of experience shipping delicate vintage audio equipment worldwide.
If your country is not listed, please contact me for shipping options.
š Exchange Options
Equipment purchased from us can be exchanged.
ā Feedback
Your satisfaction is important. Please contact me if you have any questions before leaving feedback.
š© Contact Me
Click "Ask a Question" on eBay. I usually respond within 24 hours.
š Other Products
We have over 450 vintage audio devices and accessories in stock.
Check out our other listings and subscribe to our store to stay up-to-date with new arrivals.
š VIEW OUR OTHER LISTINGS
š Thank you!
ā Igor ORT
