Downloads
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Dada Electronics Revision/Upgrade Manuals:
Dada Electronics DC Protection/Delay board Installation Instructions (206 KB)
Dada Electronics Dual Mono PSU Installation Instructions (430 KB)
Quad 303 (including DaDa boards) Converting the output stage to NPN/PNP V 1.0 (517 KB)
Quad 303 Upgrade/Revision Manual (357 KB)
Quad 306 Upgrade/Revision Manual (958 KB)
Quad 33 Upgrade/Revision Manual (3155 KB)
Quad 34 Upgrade/Revision Manual 2.12 (969 KB)
Quad 405 Upgrade/Revision Manual (247 KB)
Quad 44 Upgrade/Revision Manual (962 KB)
Quad 606 Upgrade/Revision Manual 1.3.1 (1309 KB)
Quad Service Manuals:
Quad 303 Service Manual (2373 KB)
Quad 306 Service Manual (1315 KB)
Quad 33 Service Manual (1042 KB)
Quad 34 Service Manual (5200 KB)
Quad 405 and 405-2 Service Manual (17748 KB)
Quad 44 Service Manual All Serial Numbers 1.0 (1866 KB)
Quad 606 Service Manual (2306 KB)
Quad 66 Service Manual (3501 KB)
Quad CD66 Service Manual (5746 KB)
Quad CD67 DACT Service Manual (1924 KB)
Quad ESL 57 Service Data (216 KB)
Quad ESL 63 Service Data (1327 KB)
Quad FM3 Service Manual (2461 KB)
Quad FM4 Service Manual (4285 KB)
Quad II 40a Service Manual (1666 KB)
Quad User Manuals:
Quad 22 Instruction Manual (2267 KB)
Quad 240 User Manual plus schematic (2224 KB)
Quad 306 User Manual (3035 KB)
Quad 33 Instruction Manual (2308 KB)
Quad 34 Instruction Book (3137 KB)
Quad 405 Instruction Book (3983 KB)
Quad 405 MK2 Instruction Book (472 KB)
Quad 44 Instruction Book (8506 KB)
Quad 50D - 50E Operating Instructions (1648 KB)
Quad 510 first version Instruction Manual (2081 KB)
Quad 510 second version User Manual (1137 KB)
Quad 520 User Manual (1042 KB)
Quad 520f User Manual (1363 KB)
Quad 606 Instruction Book (15028 KB)
Quad 66 User manual (467 KB)
Quad 99 User Manual (7916 KB)
Quad AM 3 Instruction Manual (16867 KB)
Quad ESL 57 Instruction Book (3149 KB)
Quad ESL 63 Instruction Book (1389 KB)
Quad FM2 Instruction Booklet (2587 KB)
Quad FM3 Instruction Booklet (3960 KB)
Quad II Classic User Manual (252 KB)
Quad Multiplex Decoder Instruction book (1946 KB)
Quad Schematics:
Quad 22 Control Unit 11402 ISS 1 Schematic (141 KB)
Quad 303 MK2 Schematic (696 KB)
Quad 306 Schematic (1801 KB)
Quad 33 Schematic (785 KB)
Quad 34 MK2 Schematic (275 KB)
Quad 405 MK1 PCB 12368 ISS 9 Schematic (163 KB)
Quad 405 MK2 PCB 12333 ISS 8 Schematic (2149 KB)
Quad 44 Schematics - Late versions (992 KB)
Quad 50E Schematic (1124 KB)
Quad 510 First Schematic (683 KB)
Quad 510 Second Schematic (433 KB)
Quad 520 Schematic (977 KB)
Quad 520f pcb 12828-7 Schematic (1287 KB)
Quad 520f pcb 12828-8 Schematic (1341 KB)
Quad 606 Schematic (3465 KB)
Quad 707 Schematic (1941 KB)
Quad 909 Schematic (633 KB)
Quad AM2 Schematic (528 KB)
Quad ESL63 Schematic (477 KB)
Quad FM1 Schematic (262 KB)
Quad FM2 Schematic (387 KB)
Quad FM3 MK1 Schematic (Below Serial N° 5885) (818 KB)
Quad FM3 MK2 Schematic (Above Serial N° 5885) (805 KB)
Quad FM4 MK2 Schematic (169 KB)
Quad II Control Unit Schematic (239 KB)
Quad II Power Amplifier Schematic (329 KB)
Quad Multiplex Decoder Schematic (96 KB)
Other Quad Documents:
Current Dumping explained by Peter Walker (1975) (864 KB)
Quad - Rogers LS5-8 Design Report by BBC (1979) (239 KB)
Quad 1981 Brochure (27367 KB)
Quad 303 Monoblock Instructions (53 KB)
Quad 405 Mains Transformer Connections (668 KB)
Quad 405 Monoblock Instructions (871 KB)
Quad 405 Upgrade Instructions Bernd Ludwig V 13 2009 (490 KB)
Quad 510 Output Cards (1486 KB)
Quad ESL 57 Revision by Joerg Baar (671 KB)
Quad ESL 57 Revision by Sheldon D. Stokes Part 1 (7111 KB)
Quad ESL 57 Revision by Sheldon D. Stokes Part 2 (544 KB)
Quad ESL Theory PJ Walker 1955 (6842 KB)
Quad Production History and Serial Numbers (17 KB)
The First 50 Years of Quad (Strongly recommended !) (16770 KB)
Transtec (NL) 1985 Quad Pricelist (in Gulden) (457 KB)
Using a CD-Player with the 33 Control Unit (Quad paper) (294 KB)
Velleman Kit Manuals:
K2570 Manual (En) (238 KB)
K2649 Manual (En) (484 KB)
K4003 Manual (En) (381 KB)
K4102 Manual (En) (292 KB)
K4700 Manual (En) (321 KB)
K6714 Manual (EN) (571 KB)
K7300 Manual (En) (601 KB)
K8012 Manual (En) (343 KB)
K8028 Manual (En) (1375 KB)
K8055 Manual (En) (1292 KB)
K8056 Manual (En) (497 KB)
K8059 Manual (En) (169 KB)
K8071 Manual (En) (288 KB)
K8084 Manual (En) (1259 KB)
MK111 Assembly manual (166 KB)
MK163 Assembly Manual (352 KB)
Component Datasheets:
2N3773 Datasheet ON Semiconductor (93 KB)
AD797 Datasheet Analog Devices (1050 KB)
BAT86 Datasheet Philips (57 KB)
BC Components MKT Datasheet (273 KB)
BC107 BC108 BC109 Datasheet Philips (54 KB)
BC556 / 557 / 558 / 559 / Datasheet Fairchild (46 KB)
BHC Aerovox Capacitors Datasheet (4968 KB)
BS08D Datasheet Powerex (189 KB)
BS170 Fairchild Datasheet (518 KB)
BSX19 - BSX20 Datasheet Micro Electronics (102 KB)
BSX21 Datasheet Micro Electronics (16 KB)
CD4066 Datasheet Fairchild (112 KB)
CNY17 Optocoupler Datasheet Vishay (118 KB)
DACT CT3 Audio input selector Datasheet (200 KB)
DACT CT4 Audio Balance Control Datasheet (131 KB)
HEF4016 Datasheet Philips (79 KB)
KA317 Datasheet Fairchild (50 KB)
KA337 Datasheet Fairchild (37 KB)
LF357N Datasheet (401 KB)
LM1036 Datasheet (750 KB)
LM158 - LM258 - LM358 Datasheet ST (272 KB)
LM311 Datasheet ST (206 KB)
LM386 Datasheet National Semiconductor (264 KB)
LM393 Datasheet ST (251 KB)
MC1310P (NTE801) Datasheet (20 KB)
MC14174B Datasheet ON Semiconductor (174 KB)
MC3403 Datasheet (115 KB)
MJ15003 Datasheet ON Semiconductor (60 KB)
NE555 Datasheet ST (503 KB)
OPA134 Datasheet Burr Brown (328 KB)
OPA2134 Datasheet Burr Brown (328 KB)
OPA2604 Datasheet Burr Brown (345 KB)
OPA604 Datasheet Burr Brown (179 KB)
TL783 Datasheet (740 KB)
TS924 Datasheet ST Microelectronics (383 KB)
Revox Documents:
Revox A720 Operating Instructions (6081 KB)
Revox A720 Remote Control Operating Instructions (6081 KB)
Revox A720 Service Manual (61453 KB)
Revox A740 Operating Instructions (2565 KB)
Revox A740 Service Manual (7377 KB)
Revox A77 Operating Instructions (18117 KB)
Revox A77 Service Manual (77993 KB)
Revox B285 - B286 Service Manual (23850 KB)
Revox B77 Diagrams (3766 KB)
Revox B77 Dolby Operating Instructions (784 KB)
Revox B77 Dolby Service Manual (42010 KB)
Revox B77 MK1 and MK2 Service Manual (49849 KB)
Revox B77 MK2 Operating Instructions (31165 KB)
Revox B780 - B739 Service Manual (97313 KB)
Revox B780 Operating Instructions D - F - E (60185 KB)
Yamaha Documents:
M-2 Owners Manual and Schematic (1678 KB)
M-4 Owners Manual and Schematic (1017 KB)
Cyrus Documents:
Cyrus 1 Service Manual (3419 KB)