Sherwood S 9900A (1966–1968)
A solid-state stereo integrated amplifier produced in the late 1960s, rated at 40 watts per channel.
Overview
The Sherwood S-9900A is a solid-state stereo integrated amplifier made around 1967, with production spanning 1966 to 1968. It was manufactured in Chicago and represents Sherwood’s push into higher-power solid-state designs of the era. The unit delivers 40 watts per channel into 8 ohms in stereo mode and contains 23 silicon components in its complement. While lacking extensive documentation, surviving units suggest it was built for durability and musical performance, with some owners noting it still sounds pretty nice today despite its age.
Specifications
| Product type | Solid-State Stereo Amplifier |
| Power output | 40 watts per channel into 8Ω (stereo) |
| Power consumption | 5 - 100 watts |
| Complement | 23 silicon |
Design
The amplifier is solid-state, utilizing silicon transistors in its circuitry, with a total complement of 23 silicon components.
Market
A Canuck Audio Mart listing shows a unit for sale at $200 CAD. Some units exhibit issues such as static or problems in the loudness circuit, likely due to age-related wear. A service manual is available for units with serial number Q802501 and up, and a schematic diagram is accessible through the AK Database PDF Gallery.
eBay Listings
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