SEED Television

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SEEDTelevision logo.png
SEED Television
Manufacturer: Pioneer
Add-ons: Pioneer TV Video Game Pack SD-G5
Release Date RRP Code

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The Pioneer System Component TV 'SEED' (パイオニア システム コンポーネント テレビ 「シード」), known in the United States as the Pioneer SD-25 Expandable TV[1], and commonly known as the SEED Television, is a video game-compatible television set developed and manufactured by Pioneer. First released in Japan in 1983, and later brought to the United States the same year, the system features interchangeable hardware expansions known as CompoPacks[2] (known in the United States as Packs[1]) which expand the television set's audio and video capabilities. One CompoPack, the 1983 Pioneer TV Video Game Pack SD-G5, enables compatibility with Sega SG-1000 and Sega SC-3000 game cartridges.[3]

"SEED" is an acronym for "system expandable"[4], referring to the television's unique expandability.




Pioneer TV Video Game Pack SD-G5

Main article: Pioneer TV Video Game Pack SD-G5.

Released in 1983, the Pioneer TV Video Game Pack SD-G5 allows the system to play Sega SG-1000 and Sega SC-3000 game cartridges, and features a cartridge slot directly on the front of the CompoPack itself.[3]

Technical specifications

Main article: SEED Television/Technical specifications.



As Japan was growing wealthier from the Japanese asset price bubble, so was the average Japanese consumer. With this newfound wealth came a push from the nation's electronics manufacturers in both pioneering technology and lower prices, and soon, the Japanese market for home electronics exploded, both home and abroad. One of these companies, Pioneer, began an internal project seeking to redefine consumer home television as "a unique proposal beyond the framework of television and display."[2]


Released in 1983, the SEED Television featured a novel expansion system: the bottom of the television set features an expansion bay in which users can insert separate hardware modules to enable different functionalities, like stereo television, karaoke, and even video games. While not an unheard-of idea in home electronics, this method of interchangable hardware expansions is not normally integrated into the television set itself.

Boasting a standard 26" screen and component video outputs, the device was marketed towards the high-end consumer electronics market and videophiles, and as such was priced relatively-high.


While innovative, the device's modern status as an obscure rarity indicates a lukewarm reception, and its high pricing would have significantly limited interest among the average Japanese buyer.


The SEED Television is the direct predecessor to Pioneer's LaserActive platform, which also features interchangeable hardware expansions (now known as PACs), similar internal coding schemes, and was also released exclusively in Japan and the United States.

Localised names

Also known as
Language Localised Name English Translation
English (US) Pioneer SD-25 Expandable TV Pioneer SD-25 Expandable TV
Japanese パイオニアSEEDのコンポーネントディスプレイ Pioneer SEED Component Display

Magazine articles

Main article: SEED Television/Magazine articles.

Promotional material

Main article: SEED Television/Promotional material.