Sinclair ZX Spectrum +2A

The Sinclair ZX Spectrum +2A was an Amstrad produced Sinclair machine housed in a black case, replacing the earlier grey colour model Plus 2.

Some early Spectrum +2A that used the Z70830 Spectrum +3 Motherboards have a sound problem, where a resistor was missed off the board, which had the unfortunate effect of channeling the 128K sound through the 48K circuit, creating a high level of distortion.

Internet folklore often has it, that all +2A machines have the fault, but almost all use an entirely different board (270833) which has the fault corrected. It is actually very rare to find a +2A machine with a sound fault, leading people to try and seek out the much rarer +2B needlessly, thought mistakenly by many  to be the only model with the sound fix.

Manufacturer: Amstrad
Date: 1987

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Sinclair ZX Spectrum +2A Manuals:

Item Manufacturer Date
A Course in BASIC Programming - ZX80 Operating Manual Science of Cambridge 1980
Disk Interface Manual (Technology Research) Technology Research 1984
Sinclair - ZX Spectrum Servicing Manual Sinclair Jan 1984
Sinclair ZX Spectrum +2 Manual Sinclair 1986
Spectral Manual (East German ZX Spectrum Clone) Hübner Elektronik 1988

Sinclair ZX Spectrum +2A Articles:

Item Manufacturer Date
Prism VTX5000 Prism Unknown
Sureshot Spectrum Joystick Interface Sureshot Unknown
Competition Pro 5000 Joystick Coin Controls Ltd. Unknown
Sinclair ZX Interface 2 Sinclair Unknown
Home Made Load-Save Box for Sinclair ZX Spectrum Home Made Unknown
Home Made ZX Spectrum Speech Synthesizer Home Made Unknown
ZX Interface 1 Sinclair Unknown
Dk'tronics ZX Spectrum Light Pen- Dk'Tronics Unknown
Indescomp Parallel/Serial Interface indescomp Unknown
Data-Skip VIDEOFACE Digitiser Data-Skip Unknown
DivMMC EnJOY! mint Unknown
Power Play Joystick Interface Power Play Unknown
AGF Protocol Game Controller Interface AGF Unknown
ZX Spectrum Print 'n' Plotter Jotter Print 'n' Plotter products Unknown
Ram Electronics Music Machine Ram Electronics Unknown
Home Made ZX Spectrum Speech Synthesizer Home Made Unknown
Home Made Load-Save Box for Sinclair ZX Spectrum Home Made Unknown
Add-On Electronics Sound Module Adonic Electronics Ltd Unknown
Lo-Profile Professional Keyboard Unknown
MGT Plus D Interface MGT Unknown
Kempston Pro Joystick Interface Kempston Unknown
Sinclair ZX Printer Sinclair Unknown
Morsen Electronics Radioteletype Adapter Morsen Electronics Unknown
Sinclair Black Watch Sinclair Radionics 1975
Sinclair ZX Spectrum Test Cartridge Sinclair 1983
ZX Interface 1 for Sinclair Spectrum Sinclair 1983
Cheetah Sweet Talker Cheetah 1983
Abacus Controller Abacus Electronics 1983
Sinclair ZX Spectrum Test Cartridge Sinclair 1983
ZX Microdrive Sinclair 1983
Fuller Orator Fuller Micro 1983
Datel Inter Printer for the ZX Spectrum Kempston 1983
Rotronics Wafadrive Rotronics 1984
Currah Speech and Sound Currah 1984
Rotronics Wafadrive (2) Rotronics 1984
Protek JCB01 1200/75 Modem Protek 1984
SAGA 1 - Emperor Keyboard for Sinclair ZX Spectrum Emperer 1984
Sinclair ZX Spectrum On/Off Power Switch Sinclair 1985
Rotronics Commodore Wafadrive Adaptor Rotronics 1985
Sinclair ZX Spectrum On/Off Power Switch Sinclair 1985
Protek Switchable Joystick Interface Protek Computing Ltd 1985
Cheetah 125+ Joystick Cheetah Marketing Ltd 1986
Multiface One Romantic Robot 1986

Other Systems Related To Sinclair ZX Spectrum +2A:

Item Manufacturer Date
Amstrad CPC 464 Plus Amstrad 1984
Amstrad CPC 464 Amstrad 1984
Amstrad CPC 464 PPC MP1 Boxed System Amstrad June 1984
Amstrad CPC 664 Amstrad 1985
Amstrad CPC 6128 Amstrad July 1985
Amstrad PCW 8256 Amstrad September 1985
Amstrad PCW 8512 Amstrad November 1985
Amstrad PC1512DD Amstrad 1986
Amstrad PC1640 DD Amstrad 1986
Amstrad PC1512 SD Amstrad 1986
Amstrad PC1640 HD20 Amstrad 1986
Amstrad PCW 9512 Amstrad 1987
Amstrad PCW 9512 Amstrad 1987
Amstrad PCW 9512+ Amstrad 1987
Sinclair ZX Spectrum +2A Action Pack Amstrad 1987
Amstrad PC2086 S Amstrad 1988
Amstrad ALT-386SX Laptop Computer Amstrad 1988
Amstrad PPC 640D Amstrad 1988
Amstrad PC2086/30 Amstrad 1988
Amstrad PPC 512D Amstrad 1988
Sinclair ZX Spectrum +2B Amstrad 1989
Amstrad PC2286/40 Amstrad October 1989
Amstrad PCW 9256 Amstrad 1990
Amstrad ALT-286 Laptop Computer Amstrad 1990
Amstrad CPC 6128 Plus Amstrad 1990
Amstrad ACL-386SX120 Laptop Amstrad 1991
Amstrad PC4386SX Computer Amstrad 1991
Amstrad ANB-386SX40 Amstrad September 1991
Amstrad 7286 HD40 Amstrad 1993
Amstrad Mega PC 386SX Amstrad 1993

This exhibit has a reference ID of CH32520. Please quote this reference ID in any communication with the Centre for Computing History.


Sinclair ZX Spectrum +2A

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