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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





H.H. Scott 135 Stereo-Daptor

H.H. SCOTT model 135 STEREO-DAPTOR

Stereomaster Adapter circa 1957-1960

Add-on Control Center, Mono-to-Stereo Adaptor
The 135 was a completely passive device, that provided central control of two mono amplifiers.Controls included: AC power switching, Master Volume, Loudness compensation, stereo/mono function selector. Introduced the very narrow "H" case/chassis, later used on the 335 MPX Adaptor.The 135 was an innovative and inexpensive "stop-gap" solution that introduced the then-new (1957) concept of two-channel LP
stereo phono sources.It permitted Scott's installed base of monophonic users to protect their investment, while Scott engineers worked on integrated
Stereomaster designs like the 130 and 299.




Stereo-Dapter 135Expand to stereo by adding the Stereo-Daptor and a new H.H. Scott monophonic amplifier to your present system.The Stereo-Daptor permits control of two separate amplifiers from a central point. A Master Volume Controladjusts the volume levels of both channels simultaneously. Special switching lets you play stereo, reverse stereo, use your stereo pickup on monaural records, or play monaural program material through both amplifiers at the same time. This gives you the full power of both amplifiers. No internal changes are required when used withH.H. Scott amplifiers




This is a pristine example of the model 138 Stereo-Daptor. This component was made to be a "bridge" for H.H. Scott owners to add another mono amp to their existing mono amp for a true stereo sound and have one central control.
Once H.H. Scott introduced true stereo amps, this item was dropped from production.
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