Tel-Ray Electronics was a Los Angeles company founded in 1946 by brothers Raymond and Marvin Lubow, originally as a television and radio repair business operating out of the Watts neighborhood. The company transitioned into audio manufacturing after Ray Lubow was granted a 1959 patent for an electro-static delay apparatus — a device built around a motor-driven flywheel spinning inside a sealed can filled with electrolytic oil. This mechanism became the basis for the Adineko ("Ad-N-Echo") oil can delay, producing a murky, vibrato-inflected echo distinct from the tape and drum delay units of the era.

Through the 1960s Tel-Ray manufactured Adineko-based echo units on an OEM basis for several major brands, most notably the Fender Variable Delay and Fender Echo-Reverb, along with units sold by Gibson and others. The Lubow brothers later shifted focus to marketing their own line of pedals under the Morley name — coined as a play on "More-Lee" versus the Leslie speaker's "Less-Lee." Ray Lubow's electro-optical, potentiometer-free circuit design addressed the pot-failure issues common to wah pedals and became a signature element of Tel-Ray–era Morley products such as the PWF Power Wah Fuzz and various volume and phaser pedals.

The Morley trademark was sold to a separate owner in 1989, ending the Lubow brothers' direct involvement, and pedals produced during the Tel-Ray/Lubow era are sought after by collectors of vintage effects.

Tel-Ray has 3 products cataloged on Equipboard, including Effects Processors. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Mike Campbell.