Bass types

Bass Raised Sound System
brssBass expansion, usually 3 levels: moderate, heavy, off.
Manufacturer: Sanyo
View Bass Raised Sound System WM models
View Bass Raised Sound System WM models

Dynamic Bass Boost
ph-dbbThe Dynamic Bass Boost block provides boost that varies with input-signal level: lower levels require, and receive, more bass than higher levels. Using a variable-Q filter, this block dynamically adjusts the amount of boost.
Manufacturer: Philips
View Dynamic Bass Boost WM models
View Dynamic Bass Boost WM models

Dynamic Bass Boost
so-dbbFirst introduced in the mid 80s for Sony cassette portables, changed later to Mega Bass. It was also used in CD, MD and DAT portables.
Manufacturer: Sony
View Dynamic Bass Boost WM models
View Dynamic Bass Boost WM models