At the August Love the Music Record Show we were fortune to have Ed Bielaus, one of the outstanding LtM Vinyl Dealers, bring in a genuine Sylvania Exponent 4 40 portable turntable / stereo system, circa 1965. Portable turntables have again become popular with many new models on the market. The “Incomparable” Exponent 4 40 is an early generation of this revived audio sensation.

Here is a video of a demonstration of Exponent 4 40 system given by Ed Bielaus at the August 2022 LtM Record Show.
For fun check out the Sylvania Exponent 4 40 blog including the Ads and Spec Sheet.
Ed, thank you for sharing and demoing this cool system.

The Love the Music Record Show is 10/2 (Sunday) from 10am to 3pm. The event is held bi-monthly in the Rosensteel Hall Emerald Room, 9707 Rosensteel Avenue, Silver Spring, MD 20910.