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ADS L300C Vintage 2-Way Compact Studio Monitors

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Pickup currently unavailable at SkyFi 479

Ads L300C Vintage 2-Way Compact Studio Monitors Speakers

ADS L300C Vintage 2-Way Compact Studio Monitors

SkyFi 479

Pickup currently unavailable

479 South Broad Street
Glen Rock NJ 07452
United States


Well regarded monitor speaker from ADS utilizing one of my favorite tweeters for a super smooth high end. Built in a metal cabinet sure to stand the test of time. Small but able to provide big sound.

Brand background:
In 1966, a brilliant physicist, Dr. Godehard Guenther, came to the United states to work for NASA. Being an accomplished pianist and possessing an intensive passion for music, Dr. Guenther was disappointed with availability of high quality, cosmetically appealing audio products. He sent home for his Braun hi-fi system and soon his friend and co-workers were all asking if these products were available in the United States. He had Braun send a few systems and it quickly elevated to container loads. Godehard was awarded sole distribution right for Braun hi-fi in the United states.

Dr. Guenther left NASA and move to Cambridge, Massachusetts in 1974. He started importing drivers from Braun and Id the assembling and selling of the finished products in the United States. Eventually, he sourced all components and began designing and building his own products sold under the a/d/s/ name.

Dr. Guenther retired in 1993, and through a merger with the high-end Canadian audio company, Museatex, ADS Technologies was formed. The research and development to the company was totally re-focused and, with a new management team, the company set out on a new journey. the goal of ADST was to acquire specialty manufactures who were able to share production efficiencies and gain total control over quality and manufacturing. A/D/S has its own team of design engineers headed by Ed Meitner. ADST is headed by Kurien Jacob, who has an extensive financial back ground as well as being a true audiophile. The acquisition of Orion Industries, in early 1994 was ideal for group. It was a company unparalleled in the audio sound competition arena and state of art electronic production facilities. This allow for separate marketing of very different products yet utilize engineering and manufacturing of a/d/s/, Orion and Museatex.

ADST was sold to Directed Electronics Inc. early 2000. Sadly, Mr. Guenther has passed away October 16, 2014.


Amplifier recommendations:
Both solid state and tube should pair well with this unit. Manufacturer recommends 25-100W. 4 ohms.

Room Size Recommendation:
Small to Mid-Size Room

Single set of spring loaded bare wire posts.

Cosmetic condition:
We rated this a 6 with moderate signs of use and wear. See our detailed rating descriptions here

Working condition, Technical Notes:
Working properly, fully tested in our lab and listening room.  

Speakers only.

Will be packed using our highly developed in-house process and custom packing materials. 

Standard UPS w/Insurance.

Original MSRP:


Super compact cabinets measure 9" H x 6" W x 6" D  

Both built in the 1990's


Link to manual :

Recommended Cables:
Use bare wire.

The SkyFi Testing Process for Speakers:
Our speaker evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, dented tweeter domes, and cone damage. We also inspect the speaker connection points for loose or broken connectors.

After the initial visual inspection we connect the speakers to a reference amplifier with our preferred test tracks. With the speakers placed with proper distance we listen to each driver to make sure that they are producing the intended frequencies with no signs of distortion or rattle. During listening tests with test tracks we check for proper stereo imaging and bass response at various listening levels. If there are any audible signs of issues, the speakers are taken to the bench where we perform a frequency sweep to isolate the issue so that it can be resolved by component repair or replacement.



Original Box

Not Included


Not Included


Not Applicable


Available Separately

Physical Condition (Info Here)

6 / 10

Working Condition

10 / 10

SKU: 101988