Dokorder was a brand of tape recorder from Japanese electronics company Denki Onkyo (ja), located in Ōta, Tokyo (not related to the Onkyo audio company of Osaka, neither to Denon) that included a four-reel transport system called "Dub-A-Tape" capable of feeding two different tapes through the same tape head assembly and, in the process, recording a duplicate of a tape. (The master and blank tapes passed through the same capstan, but through different tape head areas, yielding a Y-shaped tape path reflected in the slots built into the head assembly. Denki Onkyo also supplied a consumer and semi-pro line of reel to reel recorders (including 4 track multitracks) that competed with Tascam/Teac and Sony but ultimately its products were found to be less durable than the competition.
In 1982, Murata Manufacturing acquired 55% shares of Denki Onkyo, and in 1999, the company has been fully merged into Murata.
1958 - ? No further info found on company
Denki Onkyo KABASHIKI Kaisha
25, 3-Chome, Nishirokugo, Ota-Ku, Tokyo-To Japan
US trademark filed 3/30/1960 - cancelled 2002 - not related to the Onkyo audio company, located in Osaka
Dokorders in the Reel2ReelTexas.com vintage reel tape recorder recording collection
Teac Concertone Dokorder
As I'm mentioning Berlant and American Concertone, here's photos of one our favorite's, the green with large white buttons Concertone 801 featured in Doris Day and Rock Hudson's movie "Send Me No Flowers." Link to listing in our collection
Here's the identical recorder which was re-branded by Dokorder
Concertone 801 on far left and Dokorder rebranded unit and original box on right. Photos courtesy of "technextdoor"
Dorkorder ads in the Reel2ReelTexas.com vintage reel tape recorder recording collection
Dokorder photos submitted to our collection by others