The Audio Recorder/Player Database

Posted onSeptember 12, 2025December 12, 2025AuthorDave Morton

Manufacturer: Minnesota Mining and Manufacturing Co. (3M)
Model: 525
Type:
Place of origin: St. Paul, Minnesota, USA
Date of manufacture: 1972

Comments: 3M's proprietary sound slide system. User inserted an ordinary 2x2 slide into a special holder. Holder had a small magnetic disc that held a few seconds of sound.

Recorder Manufacturers

Philips (Koninklijke Philips);
- ST-459
3M (Minnesota Mining and Manufacturing Co.);
- 525
- 94BG Cantata
3M-Revere (Revere Camera Co., div. of 3M);
- 1580
3M-Wollensak (Wollensak Div. of 3M Company);
- 2551-AV
- 4060
- 4780
- 6024-AV
- 6250-AV
- T1400
- T1500
- T1908
ACA (Amplifier Corp. of America);
- Dictascriber
ACEC (Ateliers de Constructions Electriques de Charleroi);
- Dictorel 2420
Acme (Acme);
- 1500
Acoustiphone (Acoustiphone Corporation);
- 900 Acousti-corder
- Acousti-player 700
AEG (Allgemeine Elektricitäts-Gesellschaft AG);
- Kleine Magnetophon KL-15
- Magnetophon 104
- Magnetophon 70
- Magnetophon 75
- Magnetophon 76
- Magnetophon K-7
Afco (Afco Elec tronics);
- Executive
AGA (AGA AB);
- Agavox 2
- Agavox C
- unknown
Air Castle (Spiegel Inc.);
- 603.880
- 795.880
- Unknown
Air Castle (Spiegel, Inc.);
- 603.880
- 795.880
- Unknown
Air King (Air King Products Co.);
- A-750
Aiwa (Aiwa Co., Ltd.);
- TP-179
- TP-31
Akai (Akai Electric Co., Ltd.);
- 1800SD
- CSM-3
- GX-18104
- GX-230D
- GX-280 DSS
- GX-747
- GXC-46D
- GXC-760D
- GXC-760D
- X-150D
- X-1800SD
- X-1810
- XEA-15 Adapter
Allied (Allied Radio Corp.);
- 1099
American Audio (ADJ Products, LLC );
- Unknown
American Telegraphone (American Telegraphone Co.);
- Early wire recorder
- Telegraphone Answering Machine
Ampex (Ampex Corp.);
- 1461
- 612
- 800
- 9006
- 934
- 936
- 936
- ATR-700
- AX-50
- HCR-8
- Micro 9A
- unknown (data recording system)
Ampro (Ampro Corporation);
- 730
- 731
- 7318
- 739
- 745
- 755/756
- 757
AndyGard (General Molds and Plastics Corp.);
- 900 Home Recorder
Anritsu (Anritsu Electric Corporation);
- Wire recorder
Ansaphone (Ansaphone Corp.);
- KH-85F
- KH-85F
- KH-85F
- unknown
Apolec (Apollo Electric Industries);
- RA11
Argus (Argus, Inc.);
- 800
- 800
Arion (Arion Corporation);
- Ar-tik' 414
Armour Research (Armour Research Foundation);
- 51
Arvin (Arvin (brand of Noblitt-Sparks Industries, Inc.));
- 85L08
- 86L48A3
Arvin (Arvin Industries, Inc);
- 85L08
- 86L48A3
Assman (Wolfgang Assman GmbH);
- 640
Astatic (Astatic Corp.);
- Mirraphone
ATC (Automatic Tape Control);
- Cartridge player
Audio Applications (Audio Applications, Inc.);
- Voice-Master
Audio Devices (Audio Devices);
- 1-mil audio tape
Audio Tutorial (Audio Tutorial (Div. of Burgess Publishing Co.));
- SC-1
Audio-Phonic (Gem Color Co., Inc.);
- Audio-Phonic
AudiOfax (AudiOfax Corporation);
- AudiOfax
Audiomatic (Continental Iambic Inc.);
- A-900
- A-900
Audiotronics (Audiotronics Corp.);
- 110
- 110
Automatic Radio (Automatic Radio Manufacturing Co.);
- STP(?)-4499
Bang & Olufsen (Bang & Olufsen A/S);
- B506k
Bel Air (Bel Air);
- 394
Bell (Bell Sound Systems Inc.);
- RT-65 Re-Cordo-Fone
- 400 Series
- BT2051B
- RT-204
- RT-65 Re-Cordo-Fone
- RT-75
- T-238
- T-300 Series
- T200-210
Bell & Howell (Bell & Howell Co.);
- 785
- 300 Series
- 3081B
- 600 Series
- 770
- 770
- 785
- Filmosound
Belle Wood (Belle Wood);
- 8000
Bellsouth (Bellsouth LLC);
- 1191C
Benkson (Benkert Benkson Ltd.);
- HIL-3
Berlant (Berlant Associates, Inc.);
- BR-1
Berlant Concertone (Columbia Records, Inc.);
- 770
- TR-100
- Unknown
Berlant Concertone (Concertone, Inc.);
- 770
- TR-100
- Unknown
Berliner (Berliner Gramophone Co.);
- unknown
Bigston (Kyokuyo Electric Co. Ltd.);
- BR-600
Blaupunkt (Blaupunkt Werke GMBH, subsidiary of Robert Bosch Group);
- CR-4095
Bon Sonic (Bon Sonic);
- MC-711
Boosey Hawkes (Boosey & Hawkes Ltd.);
- unknown
Bradford (W.T. Grant Co.);
- WTG-60178
Brennell (Brenell Engineering Co., Ltd. );
- Mk 5
Brush Development Co. (Brush Development Company);
- BK-303
- BK-401
- BK-403
- BK-411
- BK-416
- BK-503 Mail-A-Voice
- BK-503 Mail-A-Voice
Butoba (Schwarzw lder Uhrwerkefabrik Burger KG);
- Export/TPR2
- MT-5
- TS-61
Butoba (Schwarzwälder Uhrwerkefabrik Burger KG);
- Export/TPR2
- MT-5
- TS-61
C. Lorenz (C. Lorenz AG);
- Textophon
Califone (Califone International, Inc.);
- 5272AV
Capehart (Capehart Automatic Phonograph Corp.);
- Unknown (early record changer)
- Unknown (early record changer)
Carraday Haiat (Carraday Haiat Ltd.);
- 15-206
- TP-723
Carryola (Carryola Company of America);
- Unknown (record changer)
Challen (Challen Instrument Co.);
- Minivox
Channel Master (Channel Master Corp.);
- 6545
- Small Talk
Cipher (Inter-Mark Corp.);
- 1
Citroen (Citroen Electronics Corp.);
- 66012
Clarion (Clarion Sound Engineering Co.);
- Model A
Coby (Coby Electronics Corporation);
- CV-LR930 Digital Language Repeater
Code-A-Phone (Code-A-Phone Corp.);
- 1750
- unknown
Code-A-Phone (Ford Industries, Inc.);
- 1750
- unknown
Cole (Cole Mfg. Co.);
- Cole-Vanguard
- Dictator TR-400
- Vanguard
Columbia (Columbia Record Co.);
- 461
- 462
- 560
- C-690TR
- C-695TR
Columbia Bell & Howell (Columbia Records, Inc.);
- 350
- 366
Columbia Graphophone (Columbia Graphophone Co.);
- AB
Columbia(Japan) (Columbia (Japan));
- 2686
- C69-OTR
Comptometer (Comptometer brand of Felt and Tarrant Manufacturing Company);
- Commander
Concord (Concord Electronics Corp.);
- 103
- 107
- 220-T
- 555
Continental (Tape Recorders, Inc.);
- 220
- 220
Continental Iambic (Continental Iambic Inc.);
- A-900
Conumep (Conumep);
- 201
Cossor (Cossor AC);
- C1601
Cousino Electronics (Cousino Electronics Corp.);
- Audio Vendor cartridge
- Mag-Matic
Craig (Craig Electronics Corp.);
- 2603
- 2623
- 3307
- PMS-1000
Crescent (Crescent Industries, Inc.);
- 2900
- 907
- E100
- Steno
- unknown
Crestwood (Crestwood (brand of Daystrom Electric Corp.));
- 304
- 400 Series
- 404
- CP-201
Crosley (Crosley Radio Co.);
- C-33A
- C-33A
Crown (Crown (Brand of International Radio and Electronics Corp.));
- 700 Gold
- CTR-355
- CTW-5950PA
- Imperial
- Prince
- Telephone Valet
Crown (Crown Radio Corp.);
- 700 Gold
- CTR-355
- CTW-5950PA
- Imperial
- Prince
- Telephone Valet
Daily Meditation (Daily Meditation);
- Audio Bible
Denon (Nippon Columbia);
- DRR-780
Dictaphone (Dictaphone Corp.);
- 3710
- A-2 Special Electricord (Military)
- Ansaphone 620
- Ansaphone 660
- Ansaphone 6909
- Ansaphone 787
- Cameo
- Cameo - transcriber
- Electricord K-142
- Model 13 (Shaver)
- Time-Master
- Time-Master
- Time-Master model 5
- Time-Master model 6
- Travel Master
Dirt Tapes (Dirt Tapes/Liquida SAS);
- Tape Roller
Dokorder (Dokorder (Brand of Denki Onkyo Co.));
- 7140
- 8010
Doro (Dictran International Corporation);
- 701
- 702
Dual (Dual Phono GmbH);
- C809
- C810
- C812
- C822
- C846
- C901
- C919
- C939
Dukane (Dukane Corporation);
- 11A-200
- 11A-55FF
- 11A-75
- 11B55
- 14A500C
- 28A120-Pro 120
- 28A46A
Duplivoice
- unknown
Edison (Thomas A. Edison);
- Tinfoil phonograph [img #2]
Edison Phonograph Works (Edison Phonograph Works(\?));
- "Improved" phonograph
Ehrcorder (Ehrcorder);
- Unknown
Eicor (Eicor, Inc.);
- 1000
- 230
- 400
Eiki (Eiki International Inc.);
- 5090A
- 7070A
Electra (Electra Radio Corp.);
- 770
- TP-500
- TP50014
Electro Brand (Electro Brand Inc.);
- Petitcette
Electromag (Electromag, Applications Électro-Magnétiques);
- G4
Electromatic (Electromatic Record Changer Corp.);
- Unknown (record changer)
Electronic Futures (Electronic Futures, Inc.);
- 202-A Audio Notebook
Electronic Secretary (Electronic Secretary Industries);
- unknown
- unknown
- unknown
- unknown
EM Stenox (EM Stenox);
- SX-20
Emerson (Emerson Radio Corp.);
- SB329
Encorder (Caltrade Mfg. and Trading Co div. of Electro Brand Inc.);
- VT-800
ERC (ERC);
- 8350
Faurot (Faurot Inc.);
- unknown
Federal (Federal Manufacturing and Engineering Corp.);
- 37B
- 37C
- 47A
Ferrograph (Ferrograph (brand of The British Ferrograph Recorder Co. Ltd.));
- 3-AN
- Series 2
- Series 3S
- Series 5
- Series 66
Fi-Cord (Fi-Cord (brand of Stellavox));
- 202
- 300-303
Fidelipac (Fidelipac, Inc.);
- Cartridge to Open Reel Adaptor
Fidelity (Fidelity Radio Co. Ltd.);
- Playmaster
- Playmaster TR5
Fisher Price (Fisher Price div of Quaker Oats Co.);
- Pocket Rockers
Fonadek (Fonadek Ltd.);
- DG-4
Fonda (Fonda Recorder Div., Jefferson Travis Corp.);
- AV-2 Cellophane Tape Recorder
Ford (Ford Industries, Inc.);
- 1400
Freeman (Freeman Electronics Corp.);
- 660
Fujiya (Fujiya Electric Co. Ltd.);
- FL-351
- FL-77
- MTR-252
- Unknown
Fujiya (Fujiya Electric Industry Co. Ltd.);
- FL-351
- FL-77
- MTR-252
- Unknown
Futura (Futura (Brand of Bell Products));
- 400-499
GAF (GAF Corporation);
- Rols
Gates (Gates Radio and Supply Co.);
- 10-12C
- VB-94 Transcription player
GBC America (GBC America Corp.);
- Phonetic PT/12
- Stenomaster
GE (General Electric Co.);
- 3-5333
Geloso (Geloso SA);
- Stenotape 711
- G.256
- Stenotape
- Stenotape 711
- Stenotape 915
- Stenotape RV 4-10
- Stenotape TR-711
Gemark (General Magnetics and Electronics, Inc.);
- 101
- 101
General (Yaou electric Co. Ltd.);
- FX-300
- FX-300
General Electric (General Electric Co.);
- 50A
- 51
- TA600B
General Industries (General Industries Co.);
- 250
- GIR-90
Gibbs (Gibbs Special Products Corp.);
- CR-335B
Gilfillan (Gillfillan Bros. Inc.);
- 108-48
Glenburn (Glenburn Engineering Ltd.);
- SP-10
Gold Coast (Gold Coast);
Graetz (Graetz KG);
- Cole Dictator
- Ultravox
Gray (Gray Manufacturing Co.);
- Audograph 5A
- Audograph AM-22
- Audograph Soundwriter
- Etc
- Key-Noter
- LP/D
- Peatrophone
- Peatrophone
Grundig (Grundig GmbH);
- Citation DEJ-33
- Cub
- DeJur TK820
- Stenorette 2200
- Stenorette Embassy Mk V
- TK-27U
- Verstatile V
Hardray (Hardray, Inc.);
- Unknown (record changer)
Harpers (Harper's Inernational Inc.);
- NL-404
- NL-404>(Comments: )
Harpers (Harper\'s Inernational Inc.);
- NL-404
- NL-404>(Comments: )
Harrison (Harrison Radio Corp.);
- unknown
Hart (Hart Mfg. Co);
- Recordgraph
Hartley (Hartley Electromotives Ltd.);
- Tape-Riter
- Tape-Riter
Heath/Heathkit (Heath Company Inc.);
- AD-40
Helion
- unknown
High Fidelity (High Fidelity);
- 402
Hoffman (Hoffman Radio Co.);
- 1006(possibly)
- unknown
Holiday (Holiday);
- EP-115
Holiday (brand) (Holiday);
- 2504
- 3861
- 818
Home Recording Co. (Home Recording Company);
- unknown
Honeytone (Associated Importers);
- UN-2
Hosho (Hosho Electronics Pte Ltd);
- 10516
IBM (IBM (International Business Machines));
- Executary 211
- Executary 224
Intermark (Inter-Mark);
- Cipher 1
International (International Electronics);
- P-3
Ipsophon (Oerlikon Machine Tool Works, Buhrle & Co.);
- Ipsophon
- Ipsophon
Jaguar
- unknown
Jefferson (Jefferson);
- 4002CM
Juliette ((Naigai Electric Industry Co., Ltd.);
- 500
- Unknown
Juliette (Naigai Electric Industry Co., Ltd);
- 500
- Unknown
JVC (Japan Victor Corp.);
- Victowriter MS-22A
Kalart (Kalart Victor Corporation);
- 392
Klemt (Arthur Klemt);
- Echolette
Knight (Brand of Allied Radio Corp.);
- 4001
- 96-590
- 96-590
- 96485
- 96499
- unknown
Knight (Knight (Brand of Allied Radio Corp.));
- 4001
- 96-590
- 96-590
- 96485
- 96499
- unknown
Kolster (Kolster Radio Corporation of America);
- unknown
Komatsu ( Komatsu Electronics Inc.;);
- Phonetta CT-101
La Belle (La Belle Industries, Inc);
- Courier
LaFayette (Lafayette Radio Corp.);
- RK-120
- RK-899
- TR-101
Lanier ( Lanier Business Products div. of Harris Corp.);
- 7200
- Edisette-unknown model
- MS-105
- P-100
- P-145
- P-85
- Voicewriter 650
Lanier (Lanier Industries);
- 7200
- Edisette-unknown model
- MS-105
- P-100
- P-145
- P-85
- Voicewriter 650
Lear (Lear Jet Corp.);
- HSA-90
Lear Jet (Lear Jet Corp.);
- P519
Lear Radio (Lear Radio Co.);
- Dynaport (console)
- Dynaport WC-311-D
- Dynaport WC-311D
- unknown
Leevers Rich (Leevers Rich & Co);
- D
Leon Scott
- Phonautograph
Lloyds (Lloyds Electronics);
- Unknown
Loftin_White (Loftin-White Laboratories);
- telephone answering machine
Louis Blattner
- Blattnerphone
M.P. Audio (M.P. Audio Corp.);
- TP-88
Mach-Tronics (MVR Corporation);
- VDR-210CF
Magna Tech (Magna Tech Electronic Co., Inc.);
- 200 Series
Magnavox (Magnavox Corp.);
- 1K0886
- 1K887518
- D7185/17R
- R-288
Magnecord (Magnecord Inc.);
- AD-16
- M-30
- M-30
- SD-1
Majestic (Majestic Radio Co.);
- 7YR753 & 7YR772
Major (Major);
- Unknown
Marantz (Philips N.V.);
- PMD101
Marconi (Stille Inventions, Ltd. and Marconi Wireless Telegraph Co., Ltd.);
- Marconi-Stille
Martel (Martel Electronics Corp.);
- Unknown
Masco (Masco (Mark Simpson Mfg. Co));
- 500
- D-37
- M52 Series
- Soundreel D27
Mastercraft (Mastercraft);
- Unknown
Masterwork (Masterwork);
- M810
Matthew Stuart (Matthew Stuart and Co.);
- Phono-Trix 88
Mayfair (Mayfair Electronics Co.);
- 482
- FT-305
- Swing-A-Tune
- TR-65
MCA (Magnetic Corporation of America);
- Dictascriber
- Dictascriber
Megatone (Megatone Electronics Corp);
- None
Mego (Mego Corporation);
- 2-XL
Meissner (Meissner Radio Co.);
- 4DR
Memorex (Memorex Corp.);
- MB1055
Mibao (MIBAO Technology Limited);
- V100
Midland (Midland Radio Corporation);
- 800-500
Midland Int'l. (Midland International);
- 12-133
Miles Reproducer (Miles Reproducer Co.);
- Walkie-Recordall
Minico (Minico Co. Ltd. (distributed in USA by Arrow trading Co.));
- 70 or "Minipet"
Miny (Miny);
- HPS-27
- unknown
Miny (Unknown);
- HPS-27
- unknown
Mitchell (Mitchell Mfg. Co.);
- 1290
- 1425A
Mohawk (Mohawk Business Machines Corp.);
- Midgetape
- Midgetape
- Tele-magnet
- unknown
Monacor (International GmbH & Co. KG);
- unknown
Monarch (Monarch Electronics International);
- Monacor RT-200A
Monske (Monske GMBH);
- Minifon Attache A72
- Minifon Office
Montgomery Ward (Montgomery Ward & Co. [retailer]);
- 05GCD
- GPL-3280
- GPL-3281
- GPL-3822
- GPL-3829
- GPL-3830a/b
- GPL-3841
- unknown
- unknown
Morse (Morse Electro Products, Inc.);
- 300
- NL-202
- TRD-130
Motorola (Motorola, Inc.);
- H7MY
- Unknown
- Unknown (record changer)
Mountain (Mountain);
- Unknown
Movievox (Movievox(?));
- unknown
Musi-Pak (Musi-Pak Inc.);
- Controlled Background Music System
Mutoscope (International Mutoscope);
- Voice-O-Graph
MVR (MVR Corp.);
- VDR2100CF-1
Nagra (Nagra (brand of Kudelsi SA));
- IV-2
- IV-D
- PS-1
- SN
Nakamichi (Kabushiki-Gaisha Nakamichi);
- Dragon
- ZX-7
Nakamichi (Nakamichi Corp.);
- Dragon
- ZX-7
National Sound Systems (National Sound Systems of America, Inc.);
- Symphonaire
New Bright (New Bright Ind. Co. Ltd);
- Kidsound
Newcomb (Newcomb Audio Products);
- 310-4
- ATVM-73
- ED-73
Nikka Castagna (Castagna Electronics Corp. );
- RP-1000ST
Nissei (Nissei Disk Corp.);
- KS-7000
Nivico (Japan Victor Co.);
- 154127
- Phonte
- TR-224
- TR-411
- TR-651U
Nivico (Nivico (brand of Japan Victor Co.});
- 154127
- Phonte
- TR-224
- TR-411
- TR-651U
Nobility (Nobility);
- RTP-661
Norcom (Norcom);
- 550
Norelco (Koninklijke Philips Electronics);
- Carry-Corder 150 (EL3312-1)
- 3585
- Carry-Corder 150 (EL3312-1)
North American (North American);
- N-678
Nye (Nye Systems Inc.);
- Nyematic
Ocean (Ocean);
- Unknown
Olympia (Olympia Werke AG);
- None (magnetic disc dictation system)
- S15
- unknown
Olympic (Olympic International Ltd.);
- RTD-40
Olympus (Olympus Corp.);
- DM-420
- S720
- S911
- VN-3200PC
Onkyo (Onkyo Corp.);
- C-707CHX
Pacific Stereo (Pacific Stereo);
- 388
Packard Bell (Packard Bell Corporation);
- Phonocord record blank
Panasonic (Matsushita Electric Industrial Co., Ltd.);
- C-102
- GRQ-2732
- RE-8127
- RN-163
- RQ-194S
- RQ-2045
- RQ-209DS
- RQ-209S
- RQ-300S
- RQ-309AS
- RQ-335
- RQ-341
- RQ-356
- RQ-39S
- RQ-413S
- RR-830
- RR-900
- RS-803
- RS-808
Party Makers (Party Makers);
- 110
Pathe (Pathe Phono and Radio Co.);
- Voice Recorder
- Voice Recorder
Peirce (Peirce Wire Recorder Co.);
- 55B
Penncrest (Penncrest (Brand of J.C. Penney));
- 6211
Pentron (Pentron Corp.);
- 9T3
- 9T3
- BL-100
- XP-60
Philips (Koninklijke Philips Electronics);
- (early tape dictation machine)
- 3581
- 505
- Carry-Corder EL3302
- CarryCorder 85
- CDR-765
- DVT1300
- EL-3500
- EL-3514
- EL-3538
- EL3581/54
- N4504
- Philips-Miller system
- Pro 12
Phone-Mate (Phone-Mate, Inc.);
- 3700
- 400
- 940
- 9750
Pioneer (Pioneer Electronic Corporation);
- AF-61A
- CTF-500
- H-22
- KD-12
- LD-660
- RT-11
- RT-707
- TC-501
- TH-30
Pioneer Video (Pioneer Video Corp.);
- LD-660
Playskool (Playskool subsidiary of Milton Bradley);
- Casey
Playtape (Playtape (brand of MGM));
- 1310
- 1401
- 1441
Polydict (Polydict);
- Unknown
Poulsen/Pedersen (Aktieselskabet Telegrafonen Patent Poulsen);
- Late wire recorder
- Late wire recorder
Premier (Premier Electronics Laboratories);
- Tapesonic 70A TRSM
Presto (Presto Recording Corp.);
- 66G
- 6N
- K8
- R-11
- R-11
- RC-11
- RC10-14
- RC10-24
- SR-950
- TL-10
Protona (Protona GmbH);
- Minifon
Pullman (Pullman Business Machines Ltd.);
- Voice-belt Mk III
Radio Shack (Tandy Corp.);
- 14-846
- 909
- CTR-24
- CTR-73
- K-14109
- K-CTR-21
- Micro 10
- Micro 12
- Micro 26
- SCT-2B
- SCT42
- TR-167
- TR-730
- TR-730
- TR-883
Radiotechnic Laboratories (Radiotechnic Laboratories (later Peirce));
- 55B
- 55B
Radiotone (Ellinwood Industries);
- HR-12
Rangertone (Rangertone Inc.);
- R-4
- RC-4
- RP4
- unknown
- unknown (film sound editing deck)
Raytheon (Raytheon Co.);
- Unknown
RCA (Radio Corporation of America);
- 10M-2.25
- 1Y2B9
- 1YB-11
- 1YB26
- 45-J2
- Electrola
- M1
- MVC 980W
- R43-B
- RC-350
- RT7B50
- SCP-2
- SRT-301
- unknown
- unknown Magnetic Disc recorder
- Victrola EY-2
- YHB-22
- YHD 42
- YHH-30
- YJD-16
- YZB-507Y
Readers Digest (Readers Digest (Brand -manufacturer unknown));
- 200XR
Realtone (Realtone Electronics Corp.);
- TR-7637 Reporter
Record-O-phone (General Teletronics, Inc.);
- 100U
- Robosonics bran
Record-O-Phone (Telegraphone) (Record-O-Phone Co.);
- None
Recordacall (Avanti, Inc. );
- TAD-10 RV8
- unknown
- unknown
Recordon (Thermionic Products Ltd.);
- TP-500
Recordophone (gramophone-type) (Recordophone Co., Inc.);
- Recordola
Rediffusion (Reditronics Ltd.);
- PT80
Rek-O-Cut (Rek-O-Kut Co.);
- Rek-O-Tape
Rek-O-Kut (Rek-O-Kut Co. );
- Challenger
- Challenger
- CVS-12
Revere (Revere Camera Co.);
- T1100
- T700-D
Revere-Wollensak (Revere Wollensak Div of 3M Corp.);
- M4
Revox (Willi Studer);
- A700
Rex
- TN-3
- TN-6
Rex ( Zeuthen & Aagaard, Ltd.);
- TN-3
- TN-6
Rheem (Rheem Manufacturing Co.);
- 3205
- Califone 70-TC
Roberts (Roberts Electronics);
- 1057
- 1725-8L
- 192-FT
- 90 Series
- 997
Rols (Sawyers Inc.);
- None
Ross (Ross Electronics Corp. );
- Mark 85
SABA ( Schwarzwälder Apparate-Bau-Anstalt (Saba));
- TC-75
Sampo (Sampo);
- CS-408
Sanyo (Sanyo Electric Co., Ltd.);
- FT-1100
- FT4-35US
- RDS-19
- TRC-5200
- TRC-5680 Micro Talk Book
Sarkes Tarzian (Sarkes Tarzian, Inc.);
- Recording tape
Scanfax (Scanfax Systems Corp. );
- 101
Sears
- 2320
- 560.21463650
- 564.93270900
- 7520-8
- ICD-P530F
- Unknown
- Unknown
Sears (Sears Roebuck and Co.);
- 2320
- 560.21463650
- 564.93270900
- 7520-8
- ICD-P530F
- Unknown
- Unknown
Senior Corder (Senior Corder);
- HIL-4
Sentinel (Sentinel Radio Corp.);
- 10
Sharp (Sharp Corp.);
- RD-708
- RD-709
- RT-1155C
- RT-6001
- RT-6001
Sharp Electric (Sharp Electric Co.);
- FXG-702
Shipton (E. Shipton and Co. Ltd.);
- Intercorder
Silvertone (Silvertone (brand of Sears, Roebuck and Co.));
- 3070
- 70
- unknown
- unknown
Sonograph Ltd. (Sonograph, Ltd.);
- Tape_Riter C2
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);
- unknown
Soundcraft (Soundcraft Corp.);
- 760
Soundesign (SDI Technologies);
- 5425
- 7619
Soundscriber (Soundscriber Corp.);
- 200
- 2-124-T
- 200
- D-24
- Lady Tycoon
- Memoscriber
- RD-217
- Tycoon
- unknown
Speartone (Spear Products Inc.);
- 57 "Junior"
St. George (St. George);
- unknown
Standard Unicorder (Standard Unicorder);
- 61-5R-F61T
Star-Lite (Sart-Lite Electronics Corp.);
- RA-11
- RN-501
Star-Lite (Star-Lite Electronics Corp.);
- RA-11
- RN-501
Starfire (Starfire);
- Unknown
Stark
- unknown
Steelman (Steelman Phono & Radio Co.);
- 2-1142
Stellaphone (brand of Philips) (Stellaphone (brand of Koninklijke Philips));
- ST-451
Stellavox (Stellavox (Dist. by Gotham Audio));
- SP-7 MPN
Stenocord (Sud-Atlas-Werke);
- 260
- D
Stewart (Stewart);
- 100
Studio (Studio);
- 44_564.21686050
Stuzzi (Stuzzi Ges. mbH);
- Magnette 671-B
- Magnette 671-B
- Memocord
- Radiocord 379W
Talking Books (Misc) (Clarke & Smith Mfg. Co.);
- Digital Standard Player (DS1)
- Unknown
Talking Books (Misc) (Unknown);
- Digital Standard Player (DS1)
- Unknown
Tandberg (Tandbergs Radiofabrik);
- 2 and 3 Series
- 4 Series
- 5 Series
- 64
- TD-20A
Tape Master (Tape Master Inc.);
- PT-121
- PT-125
Tape Recorders, Inc. (Tape Recorders Inc.);
- 110
- 110
Tape Recorders, Inc. (Tape Recorders, Inc.);
- 110
- 110
Tapecaster (Tapecaster TCM Inc.);
- 700-RP
TASCAM (TASCAM div. of TEAC Corp.);
- 424 Mk. II Portastudio
- CD-A500
TDC (Three Dimension Co.);
- Stereotone 130
TEAC (Tokyo Electro Acoustic Company);
- A2300
- X1000-R
Teaching Technology (Teaching Technology Corp.);
- TT-20
TEC (TEC Company, Ltd.);
- Labo\'70
Technics (Matsushita Industrial Electrical Co.);
- RS-M205
- RS-M95
- SL-P1111
Technics (Technics (Brand of Matsushita Industrial Electrical Co.));
- RS-M205
- RS-M95
- SL-P1111
Tecnicorda (Tecnico Electronics PTY Ltd.);
- UG4
Tefi (TEFI Germany GmbH & Co. KG);
- Tefifon
Tele-Tone (Tele-Tone);
- 501
Telectro (Telectrosonic Corporation);
- SS500W
Telefunken (Gesellschaft für drahtlose Telegraphie mbH);
- 616
- 707
- Magnetophon 10619
- Magnetophon 75
- Magnetophon KL-25
- Magnetophon M34
Telex (Telex Communications Inc.);
- 1400
Thomas A. Edison, Inc. (Thomas A. Edison, Inc.);
- Envoy
- Telescribe
- Voicewriter 76500
Thomas A. Edison, Inc. (Thomas A. Edison, Inc.a);
- Envoy
- Telescribe
- Voicewriter 76500
Tiger (Tiger Electronics);
- Deluxe Talkboy
Timex (Timex Group B.V.);
- 401
Tinico (Tinico);
- MP-41
Tobishi (Tobishi Electronics Ltd.);
- Unknown
Toshiba (Toshiba (Brand of Tokyo Shibaura Denki));
- GT-32P
Tower (brand) (Sears, Roebuck and Co., retailer);
- 4691
Toyo (Toyo);
- QC-1
- QC-1
Trav-ler (Trav-ler Radio Corp);
- TT-591
- TT-595
- TT5925
- TT5925
Trix (Vereinigte Spielwarenfabriken Andreas F rtner);
- Phono-Trix
Truetone (Western Auto Co. (retailer));
- Riviera
- TOB7675A47
Truetone (Western Auto Supply Co.);
- Riviera
- TOB7675A47
Truvox (Truvox Engineering Ltd.);
- RE-19
Uher (Assman Electronics);
- 1000
- 5000
- 730
- Universal
Uher (Uher Werke Munchen KG);
- 1000
- 5000
- 730
- Universal
Ultravox (Oerlikon Buehrle & Co);
- unknown
Ultravox (Gutor Ultravox Companies) (Gutor Holding AG, subsidiary of Dictaphone Corp.);
- U3S
Unitech (Unitech Electronics Co. Ltd.);
- CM-300
Universal Realist (Universal Realist);
- C1-A
Utah (Utah Radio);
- 60
- unknown
- unknown
- unknown
Valdemar Poulsen and Peder Pedersen
- Telegraphone (steel tape)
Valiant (Valiant);
- Unknown
Vanity Fair (Vanity Fair Industries);
- No. 53
Victor (Victor Talking Machine Co.);
- Victrola XVII
Viking (Viking of Minneapolis, Inc.);
- 75
- 76
- 85
- 88
Visual Edcom (Visual Edcom Inc.);
- RP-9511
Vivitar (Ponder & Best, Inc.);
- 2750
Voca (Voca (brand of Alroy Sales Corp.));
- None (dictation machine)
Voice of Music (Voice of Music Corp.);
- 722
- 722
- 730
- 740
- 742-AV
- 780-AV
- 781
- Courier
Volta Laboratories
- Graphophone (model)
Vtech (Vtech Holdings Ltd.);
- Little Smart Smarty 80-1449
Wagner-Nichols (Wagner-Nichols Corp.);
- Microdisc Recorder
Webster (Webster Electric Co.);
- 270 and 280
- 290
- 310
- Ekotape 212
- Ekotape 230
- unknown
Webster-Chicago (Webster-Chicago Corp.);
- 178
- 181
- 2005
- 210-10
- 2130
- 288
- 79
- 80
- Coronet 2522
- EP-2356-1B
- EP-2402-1
- Royal 2811
- Viscount III
- WC-286
Westinghouse (Westinghouse Electric Corp., Television Radio Div.);
- H28R1
Westminster (Westminster);
- ER-3947
White Electronic Development (White Electronic Development Corp. Ltd.);
- TR-16
Wilcox-Gay (Wilcox-Gay Corp.);
- 2A10
- 410A
- A-92
- CL-622
- Recordio 6520
- Recordio 6B-1
Wiretone (Molded Insulation Co.);
- MR-6
Wireway (Wire Recording Corp. of America);
- WP
Wonder Bible (All Star Products Group);
- Unknown
Zvuk (Zvuk);
- 1M