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Optimus Prime's Stereo Equipment
Old School Audio - Old School Prices - Professionally Tested
Product Description
Professionally tested and confirmed fully functional. Speakers were tested using a dedicated audio source to verify proper sound output, clarity, and balance.
Good cosmetic condition with only minor wear from use. Grill Status shown in photos (Not included, if not shown). Please review all photos for details.
Highlights At A Glance
Fully tested and verified
Clean cosmetic condition
Free 30-day returns
Fast, insured shipping
Testing & Verification
Each speaker tested individually for sound output and clarity
Drivers verified to be active with no distortion at normal listening levels
Speaker terminals inspected and confirmed secure
Our Passion for Audio
We are audio enthusiasts who grew up with this gear. Every receiver, amp, and deck is treated as if it's going into our own system. We revive classic sound to make it affordable for everyone.
Why Buy From Us
Consistent 5-star eBay feedback
Professionally verified vintage gear
Careful packaging, guaranteed authentic
Support after the sale - message for help anytime
Shipping
Shipped daily via UPS, FedEx, or USPS. Every unit double boxed, cushioned, and tracking provided automatically for peace of mind.
Free Returns & Buyer Confidence
Free 30 Day Returns. Buy with confidence - if it's not as described or doesn't meet your expectations, we'll make it right! Proud of our 5-star feedback and fast shipping.
Thanks for supporting small business - keeping classic sound alive!
Optimus Prime Stereo - Est. 2017
Generating expert take…
KLH Audio traces its origins to 1957 in Cambridge, Massachusetts, where audio pioneer Henry Kloss joined forces with Malcolm S. Low and Josef Anton Hofmann to form KLH Research and Development Corporation. Kloss, renowned for co-developing the acoustic suspension loudspeaker—a breakthrough that delivered superior bass from compact enclosures—propelled the brand to global dominance. By the early 1960s, KLH had become the world's largest loudspeaker manufacturer, employing over 500 people and distributing to six continents, with iconic innovations like the Model Nine full-range electrostatic speaker, the high-selectivity Model Eight FM radio, and the portable Model Eleven solid-state record player.
The brand's focus remains squarely on loudspeakers, blending heritage designs with modern engineering for two-channel stereo and home theater systems. Revived in 2019 under president David P. Kelley after decades of ownership changes, today's KLH reissues classics like the Model Five while introducing fresh models emphasizing acoustic suspension principles for accurate, room-friendly performance. Unlike broader audio categories such as amplifiers, turntables, or headphones, KLH prioritizes premium speaker categories rooted in its foundational expertise.
KLH occupies a respected mid-tier position in the hi-fi market, appealing to discerning buyers seeking high-value performance without ultra-high-end pricing. Its reputation endures among audiophiles for timeless sound quality, precision craftsmanship, and a legacy of democratizing superior audio—evident in its role introducing Dolby to consumer tape decks. Now headquartered in Noblesville, Indiana, KLH balances vintage allure with contemporary reliability, positioning it as a smart choice for knowledgeable enthusiasts building enduring systems.
See all KLH Audio listings on RADAR.
