Manufacturer: Teaching Technology Corp. (Teaching Technology)
Model: TT-20
Type: tape
Place of origin: North Hollywood, California, USA
Date of manufacture: 1972
The Audio Recorder/Player Database
Manufacturer: Teaching Technology Corp. (Teaching Technology)
Model: TT-20
Type: tape
Place of origin: North Hollywood, California, USA
Date of manufacture: 1972
Recorder Manufacturers
- Philips (Koninklijke Philips);
- 3M (Minnesota Mining and Manufacturing Co.);
- 3M-Revere (Revere Camera Co., div. of 3M);
- 3M-Wollensak (Wollensak Div. of 3M Company);
- ACA (Amplifier Corp. of America);
- ACEC (Ateliers de Constructions Electriques de Charleroi);
- Acme (Acme);
- Acoustiphone (Acoustiphone Corporation);
- AEG (Allgemeine Elektricitäts-Gesellschaft AG);
- Afco (Afco Elec tronics);
- AGA (AGA AB);
- Air Castle (Spiegel Inc.);
- Air Castle (Spiegel, Inc.);
- Air King (Air King Products Co.);
- Aiwa (Aiwa Co., Ltd.);
- Akai (Akai Electric Co., Ltd.);
- Allied (Allied Radio Corp.);
- American Audio (ADJ Products, LLC );
- American Telegraphone (American Telegraphone Co.);
- Ampex (Ampex Corp.);
- Ampro (Ampro Corporation);
- AndyGard (General Molds and Plastics Corp.);
- Anritsu (Anritsu Electric Corporation);
- Ansaphone (Ansaphone Corp.);
- Apolec (Apollo Electric Industries);
- Argus (Argus, Inc.);
- Arion (Arion Corporation);
- Armour Research (Armour Research Foundation);
- Arvin (Arvin (brand of Noblitt-Sparks Industries, Inc.));
- Arvin (Arvin Industries, Inc);
- Assman (Wolfgang Assman GmbH);
- Astatic (Astatic Corp.);
- ATC (Automatic Tape Control);
- Audio Applications (Audio Applications, Inc.);
- Audio Devices (Audio Devices);
- Audio Tutorial (Audio Tutorial (Div. of Burgess Publishing Co.));
- Audio-Phonic (Gem Color Co., Inc.);
- AudiOfax (AudiOfax Corporation);
- Audiomatic (Continental Iambic Inc.);
- Audiotronics (Audiotronics Corp.);
- Automatic Radio (Automatic Radio Manufacturing Co.);
- Bang & Olufsen (Bang & Olufsen A/S);
- Bel Air (Bel Air);
- Bell (Bell Sound Systems Inc.);
- Bell & Howell (Bell & Howell Co.);
- Belle Wood (Belle Wood);
- Bellsouth (Bellsouth LLC);
- Benkson (Benkert Benkson Ltd.);
- Berlant (Berlant Associates, Inc.);
- Berlant Concertone (Columbia Records, Inc.);
- Berlant Concertone (Concertone, Inc.);
- Berliner (Berliner Gramophone Co.);
- Bigston (Kyokuyo Electric Co. Ltd.);
- Blaupunkt (Blaupunkt Werke GMBH, subsidiary of Robert Bosch Group);
- Bon Sonic (Bon Sonic);
- Boosey Hawkes (Boosey & Hawkes Ltd.);
- Bradford (W.T. Grant Co.);
- Brennell (Brenell Engineering Co., Ltd. );
- Brush Development Co. (Brush Development Company);
- Butoba (Schwarzw lder Uhrwerkefabrik Burger KG);
- Butoba (Schwarzwälder Uhrwerkefabrik Burger KG);
- C. Lorenz (C. Lorenz AG);
- Califone (Califone International, Inc.);
- Capehart (Capehart Automatic Phonograph Corp.);
- Carraday Haiat (Carraday Haiat Ltd.);
- Carryola (Carryola Company of America);
- Challen (Challen Instrument Co.);
- Channel Master (Channel Master Corp.);
- Cipher (Inter-Mark Corp.);
- Citroen (Citroen Electronics Corp.);
- Clarion (Clarion Sound Engineering Co.);
- Coby (Coby Electronics Corporation);
- Code-A-Phone (Code-A-Phone Corp.);
- Code-A-Phone (Ford Industries, Inc.);
- Cole (Cole Mfg. Co.);
- Columbia (Columbia Record Co.);
- Columbia Bell & Howell (Columbia Records, Inc.);
- Columbia Graphophone (Columbia Graphophone Co.);
- Columbia(Japan) (Columbia (Japan));
- Comptometer (Comptometer brand of Felt and Tarrant Manufacturing Company);
- Concord (Concord Electronics Corp.);
- Continental (Tape Recorders, Inc.);
- Continental Iambic (Continental Iambic Inc.);
- Conumep (Conumep);
- Cossor (Cossor AC);
- Cousino Electronics (Cousino Electronics Corp.);
- Craig (Craig Electronics Corp.);
- Crescent (Crescent Industries, Inc.);
- Crestwood (Crestwood (brand of Daystrom Electric Corp.));
- Crosley (Crosley Radio Co.);
- Crown (Crown (Brand of International Radio and Electronics Corp.));
- Crown (Crown Radio Corp.);
- Daily Meditation (Daily Meditation);
- Denon (Nippon Columbia);
- Dictaphone (Dictaphone Corp.);
- Dirt Tapes (Dirt Tapes/Liquida SAS);
- Dokorder (Dokorder (Brand of Denki Onkyo Co.));
- Doro (Dictran International Corporation);
- Dual (Dual Phono GmbH);
- Dukane (Dukane Corporation);
- Duplivoice
- Edison (Thomas A. Edison);
- Edison Phonograph Works (Edison Phonograph Works(\?));
- Ehrcorder (Ehrcorder);
- Eicor (Eicor, Inc.);
- Eiki (Eiki International Inc.);
- Electra (Electra Radio Corp.);
- Electro Brand (Electro Brand Inc.);
- Electromag (Electromag, Applications Électro-Magnétiques);
- Electromatic (Electromatic Record Changer Corp.);
- Electronic Futures (Electronic Futures, Inc.);
- Electronic Secretary (Electronic Secretary Industries);
- EM Stenox (EM Stenox);
- Emerson (Emerson Radio Corp.);
- Encorder (Caltrade Mfg. and Trading Co div. of Electro Brand Inc.);
- ERC (ERC);
- Faurot (Faurot Inc.);
- Federal (Federal Manufacturing and Engineering Corp.);
- Ferrograph (Ferrograph (brand of The British Ferrograph Recorder Co. Ltd.));
- Fi-Cord (Fi-Cord (brand of Stellavox));
- Fidelipac (Fidelipac, Inc.);
- Fidelity (Fidelity Radio Co. Ltd.);
- Fisher Price (Fisher Price div of Quaker Oats Co.);
- Fonadek (Fonadek Ltd.);
- Fonda (Fonda Recorder Div., Jefferson Travis Corp.);
- Ford (Ford Industries, Inc.);
- Freeman (Freeman Electronics Corp.);
- Fujiya (Fujiya Electric Co. Ltd.);
- Fujiya (Fujiya Electric Industry Co. Ltd.);
- Futura (Futura (Brand of Bell Products));
- GAF (GAF Corporation);
- Gates (Gates Radio and Supply Co.);
- GBC America (GBC America Corp.);
- GE (General Electric Co.);
- Geloso (Geloso SA);
- Gemark (General Magnetics and Electronics, Inc.);
- General (Yaou electric Co. Ltd.);
- General Electric (General Electric Co.);
- General Industries (General Industries Co.);
- Gibbs (Gibbs Special Products Corp.);
- Gilfillan (Gillfillan Bros. Inc.);
- Glenburn (Glenburn Engineering Ltd.);
- Gold Coast (Gold Coast);
- Graetz (Graetz KG);
- Gray (Gray Manufacturing Co.);
- Grundig (Grundig GmbH);
- Hardray (Hardray, Inc.);
- Harpers (Harper's Inernational Inc.);
- Harpers (Harper\'s Inernational Inc.);
- Harrison (Harrison Radio Corp.);
- Hart (Hart Mfg. Co);
- Hartley (Hartley Electromotives Ltd.);
- Heath/Heathkit (Heath Company Inc.);
- Helion
- High Fidelity (High Fidelity);
- Hoffman (Hoffman Radio Co.);
- Holiday (Holiday);
- Holiday (brand) (Holiday);
- Home Recording Co. (Home Recording Company);
- Honeytone (Associated Importers);
- Hosho (Hosho Electronics Pte Ltd);
- IBM (IBM (International Business Machines));
- Intermark (Inter-Mark);
- International (International Electronics);
- Ipsophon (Oerlikon Machine Tool Works, Buhrle & Co.);
- Jaguar
- Jefferson (Jefferson);
- Juliette ((Naigai Electric Industry Co., Ltd.);
- Juliette (Naigai Electric Industry Co., Ltd);
- JVC (Japan Victor Corp.);
- Kalart (Kalart Victor Corporation);
- Klemt (Arthur Klemt);
- Knight (Brand of Allied Radio Corp.);
- Knight (Knight (Brand of Allied Radio Corp.));
- Kolster (Kolster Radio Corporation of America);
- Komatsu ( Komatsu Electronics Inc.;);
- La Belle (La Belle Industries, Inc);
- LaFayette (Lafayette Radio Corp.);
- Lanier ( Lanier Business Products div. of Harris Corp.);
- Lanier (Lanier Industries);
- Lear (Lear Jet Corp.);
- Lear Jet (Lear Jet Corp.);
- Lear Radio (Lear Radio Co.);
- Leevers Rich (Leevers Rich & Co);
- Leon Scott
- Lloyds (Lloyds Electronics);
- Loftin_White (Loftin-White Laboratories);
- Louis Blattner
- M.P. Audio (M.P. Audio Corp.);
- Mach-Tronics (MVR Corporation);
- Magna Tech (Magna Tech Electronic Co., Inc.);
- Magnavox (Magnavox Corp.);
- Magnecord (Magnecord Inc.);
- Majestic (Majestic Radio Co.);
- Major (Major);
- Marantz (Philips N.V.);
- Marconi (Stille Inventions, Ltd. and Marconi Wireless Telegraph Co., Ltd.);
- Martel (Martel Electronics Corp.);
- Masco (Masco (Mark Simpson Mfg. Co));
- Mastercraft (Mastercraft);
- Masterwork (Masterwork);
- Matthew Stuart (Matthew Stuart and Co.);
- Mayfair (Mayfair Electronics Co.);
- MCA (Magnetic Corporation of America);
- Megatone (Megatone Electronics Corp);
- Mego (Mego Corporation);
- Meissner (Meissner Radio Co.);
- Memorex (Memorex Corp.);
- Mibao (MIBAO Technology Limited);
- Midland (Midland Radio Corporation);
- Midland Int'l. (Midland International);
- Miles Reproducer (Miles Reproducer Co.);
- Minico (Minico Co. Ltd. (distributed in USA by Arrow trading Co.));
- Miny (Miny);
- Miny (Unknown);
- Mitchell (Mitchell Mfg. Co.);
- Mohawk (Mohawk Business Machines Corp.);
- Monacor (International GmbH & Co. KG);
- Monarch (Monarch Electronics International);
- Monske (Monske GMBH);
- Montgomery Ward (Montgomery Ward & Co. [retailer]);
- Morse (Morse Electro Products, Inc.);
- Motorola (Motorola, Inc.);
- Mountain (Mountain);
- Movievox (Movievox(?));
- Musi-Pak (Musi-Pak Inc.);
- Mutoscope (International Mutoscope);
- MVR (MVR Corp.);
- Nagra (Nagra (brand of Kudelsi SA));
- Nakamichi (Kabushiki-Gaisha Nakamichi);
- Nakamichi (Nakamichi Corp.);
- National Sound Systems (National Sound Systems of America, Inc.);
- New Bright (New Bright Ind. Co. Ltd);
- Newcomb (Newcomb Audio Products);
- Nikka Castagna (Castagna Electronics Corp. );
- Nissei (Nissei Disk Corp.);
- Nivico (Japan Victor Co.);
- Nivico (Nivico (brand of Japan Victor Co.});
- Nobility (Nobility);
- Norcom (Norcom);
- Norelco (Koninklijke Philips Electronics);
- North American (North American);
- Nye (Nye Systems Inc.);
- Ocean (Ocean);
- Olympia (Olympia Werke AG);
- Olympic (Olympic International Ltd.);
- Olympus (Olympus Corp.);
- Onkyo (Onkyo Corp.);
- Pacific Stereo (Pacific Stereo);
- Packard Bell (Packard Bell Corporation);
- Panasonic (Matsushita Electric Industrial Co., Ltd.);
- Party Makers (Party Makers);
- Pathe (Pathe Phono and Radio Co.);
- Peirce (Peirce Wire Recorder Co.);
- Penncrest (Penncrest (Brand of J.C. Penney));
- Pentron (Pentron Corp.);
- Philips (Koninklijke Philips Electronics);
- Phone-Mate (Phone-Mate, Inc.);
- Pioneer (Pioneer Electronic Corporation);
- Pioneer Video (Pioneer Video Corp.);
- Playskool (Playskool subsidiary of Milton Bradley);
- Playtape (Playtape (brand of MGM));
- Polydict (Polydict);
- Poulsen/Pedersen (Aktieselskabet Telegrafonen Patent Poulsen);
- Premier (Premier Electronics Laboratories);
- Presto (Presto Recording Corp.);
- Protona (Protona GmbH);
- Pullman (Pullman Business Machines Ltd.);
- Radio Shack (Tandy Corp.);
- Radiotechnic Laboratories (Radiotechnic Laboratories (later Peirce));
- Radiotone (Ellinwood Industries);
- Rangertone (Rangertone Inc.);
- Raytheon (Raytheon Co.);
- RCA (Radio Corporation of America);
- Readers Digest (Readers Digest (Brand -manufacturer unknown));
- Realtone (Realtone Electronics Corp.);
- Record-O-phone (General Teletronics, Inc.);
- Record-O-Phone (Telegraphone) (Record-O-Phone Co.);
- Recordacall (Avanti, Inc. );
- Recordon (Thermionic Products Ltd.);
- Recordophone (gramophone-type) (Recordophone Co., Inc.);
- Rediffusion (Reditronics Ltd.);
- Rek-O-Cut (Rek-O-Kut Co.);
- Rek-O-Kut (Rek-O-Kut Co. );
- Revere (Revere Camera Co.);
- Revere-Wollensak (Revere Wollensak Div of 3M Corp.);
- Revox (Willi Studer);
- Rex
- Rex ( Zeuthen & Aagaard, Ltd.);
- Rheem (Rheem Manufacturing Co.);
- Roberts (Roberts Electronics);
- Rols (Sawyers Inc.);
- Ross (Ross Electronics Corp. );
- SABA ( Schwarzwälder Apparate-Bau-Anstalt (Saba));
- Sampo (Sampo);
- Sanyo (Sanyo Electric Co., Ltd.);
- Sarkes Tarzian (Sarkes Tarzian, Inc.);
- Scanfax (Scanfax Systems Corp. );
- Sears
- Sears (Sears Roebuck and Co.);
- Senior Corder (Senior Corder);
- Sentinel (Sentinel Radio Corp.);
- Sharp (Sharp Corp.);
- Sharp Electric (Sharp Electric Co.);
- Shipton (E. Shipton and Co. Ltd.);
- Silvertone (Silvertone (brand of Sears, Roebuck and Co.));
- Sonograph Ltd. (Sonograph, Ltd.);
- Sony (Sony Corp.);
- 101
- 105A
- 106-A
- 8004
- BM-10
- BM-12
- BM-30
- EL-7
- ICD-UX71
- M-455
- M-507
- MZR-30
- PCM-F1
- TC_280
- TC-102A
- TC-102A
- TC-105
- TC-123
- TC-124
- TC-155
- TC-200
- TC-2289
- TC-230
- TC-250
- TC-250A
- TC-260
- TC-262
- TC-377
- TC-440
- TC-530
- TC-540
- TC-55
- TC-630
- TC-651
- TC-720
- TC-8
- TC-800
- TC-854-4
- TC-90
- TC-900
- TC-910
- TC-910
- TC-910
- TCM-2
- TCM-323
- TCM-818
- TCS-580V
- TPM-8000
- WM-3300
- WM-FX21
- Sound Inc. (Sound, Incorporated);
- Soundcraft (Soundcraft Corp.);
- Soundesign (SDI Technologies);
- Soundscriber (Soundscriber Corp.);
- Speartone (Spear Products Inc.);
- St. George (St. George);
- Standard Unicorder (Standard Unicorder);
- Star-Lite (Sart-Lite Electronics Corp.);
- Star-Lite (Star-Lite Electronics Corp.);
- Starfire (Starfire);
- Stark
- Steelman (Steelman Phono & Radio Co.);
- Stellaphone (brand of Philips) (Stellaphone (brand of Koninklijke Philips));
- Stellavox (Stellavox (Dist. by Gotham Audio));
- Stenocord (Sud-Atlas-Werke);
- Stewart (Stewart);
- Studio (Studio);
- Stuzzi (Stuzzi Ges. mbH);
- Talking Books (Misc) (Clarke & Smith Mfg. Co.);
- Talking Books (Misc) (Unknown);
- Tandberg (Tandbergs Radiofabrik);
- Tape Master (Tape Master Inc.);
- Tape Recorders, Inc. (Tape Recorders Inc.);
- Tape Recorders, Inc. (Tape Recorders, Inc.);
- Tapecaster (Tapecaster TCM Inc.);
- TASCAM (TASCAM div. of TEAC Corp.);
- TDC (Three Dimension Co.);
- TEAC (Tokyo Electro Acoustic Company);
- Teaching Technology (Teaching Technology Corp.);
- TEC (TEC Company, Ltd.);
- Technics (Matsushita Industrial Electrical Co.);
- Technics (Technics (Brand of Matsushita Industrial Electrical Co.));
- Tecnicorda (Tecnico Electronics PTY Ltd.);
- Tefi (TEFI Germany GmbH & Co. KG);
- Tele-Tone (Tele-Tone);
- Telectro (Telectrosonic Corporation);
- Telefunken (Gesellschaft für drahtlose Telegraphie mbH);
- Telex (Telex Communications Inc.);
- Thomas A. Edison, Inc. (Thomas A. Edison, Inc.);
- Thomas A. Edison, Inc. (Thomas A. Edison, Inc.a);
- Tiger (Tiger Electronics);
- Timex (Timex Group B.V.);
- Tinico (Tinico);
- Tobishi (Tobishi Electronics Ltd.);
- Toshiba (Toshiba (Brand of Tokyo Shibaura Denki));
- Tower (brand) (Sears, Roebuck and Co., retailer);
- Toyo (Toyo);
- Trav-ler (Trav-ler Radio Corp);
- Trix (Vereinigte Spielwarenfabriken Andreas F rtner);
- Truetone (Western Auto Co. (retailer));
- Truetone (Western Auto Supply Co.);
- Truvox (Truvox Engineering Ltd.);
- Uher (Assman Electronics);
- Uher (Uher Werke Munchen KG);
- Ultravox (Oerlikon Buehrle & Co);
- Ultravox (Gutor Ultravox Companies) (Gutor Holding AG, subsidiary of Dictaphone Corp.);
- Unitech (Unitech Electronics Co. Ltd.);
- Universal Realist (Universal Realist);
- Utah (Utah Radio);
- Valdemar Poulsen and Peder Pedersen
- Valiant (Valiant);
- Vanity Fair (Vanity Fair Industries);
- Victor (Victor Talking Machine Co.);
- Viking (Viking of Minneapolis, Inc.);
- Visual Edcom (Visual Edcom Inc.);
- Vivitar (Ponder & Best, Inc.);
- Voca (Voca (brand of Alroy Sales Corp.));
- Voice of Music (Voice of Music Corp.);
- Volta Laboratories
- Vtech (Vtech Holdings Ltd.);
- Wagner-Nichols (Wagner-Nichols Corp.);
- Webster (Webster Electric Co.);
- Webster-Chicago (Webster-Chicago Corp.);
- Westinghouse (Westinghouse Electric Corp., Television Radio Div.);
- Westminster (Westminster);
- White Electronic Development (White Electronic Development Corp. Ltd.);
- Wilcox-Gay (Wilcox-Gay Corp.);
- Wiretone (Molded Insulation Co.);
- Wireway (Wire Recording Corp. of America);
- Wonder Bible (All Star Products Group);
- Zvuk (Zvuk);