Welcome to 4 OP Headquarters
IMPORTANT UPDATE: January 6, 2025
We are currently working on our site. Our web host recently migrated their servers and the new server system is having issues with correctly outputting our dynamic content. We are working to get everything up and running correctly. Be advised, ALL of the links on this home page will redirect users to our legacy site which is hosted by Tripod.com. It is our old site but it is still functional. You can go directly to our legacy site by following the link below, or by clicking any of the links on this page. All of our files on our legacy site, such as the patches and owners manuals, are still perfectly functioning, however many of the links to 3rd party sites etc... may not all be working correctly. We recommend you only consume "4ophq" content from our legacy site. Also, the 4ophq Facebook page is still up and running and the Facebook FM Synthesis group is still up and running.
If you're just here for the patches heres that link:
like us on Facebook!
Update April 5, 2015
New hardware for TX81z and DX11. Introducing the "X81pg", from Marcelo Malmierca. Look for it it on EBAY, we'll keep you a ll posted on any new developments.
Update March 6, 2015
We have migrated the site to our new permanent home here as a part of the nuxmicromedia.com family. Please if anybody finds any bugs with the new move let us know by using our Facebook page or use the Cbox messenger in the right menu. We'd also like to urge all 4OPHQ patrons to join the Facebook group FM Synthesis to help grow and strengthen the resources of the FM Synthesizer based community, the admin there, Mariano Mart is a really great friend of the FM synth scene. 2015 is going to shape up to be a great year for FM synthesis! :D
4OP H.Q. is the ultimate site for YAMAHA 4 operator FM synthesizer users. To get started choose a link from the menu at the right or select a model from the list above. We are working hard to provide as much information, files, etc as possible for every model. This site greatly depends upon the 4OP community to keep it growing with content. If you have any info, files, patches etc and would like to contribute please contact us through our facebook page thank you.
To those of you who have contributed a huge thank you.
