The Korg OASYS is a workstation synthesizer released in early 2005, 1 year after the successful Korg Triton Extreme. Unlike the Triton series, the OASYS uses a custom Linux operating system that was designed to be arbitrarily expandable via software updates, with its functionality limited only by the PC-like hardware. OASYS was a software implementation of the research project that ultimately resulted in the OASYS PCI, a DSP card which offered multiple synthesis engines. The original OASYS keyboard concept had to be scrapped because of excessive production costs and limitations of then-current technology. Production of the OASYS was officially discontinued in April 2009. Korg sold just over 3000 units worldwide. The final software update was released on November 24, 2009. In 2011, Korg Kronos, a successor of Korg OASYS, was introduced at that year's NAMM Show. Features The standard Oasys comes with hardware similar to many personal computers: 2.8 GHz Pentium 4 CPU 40GB hard disk drive 1GB DDR RAM, user-expandable to 2GB 10.4" LCD touch screen It features Korg's OASYS (acronym for Open Architecture SYnthesis Studio) technology, which allows multiple synthesis engines to be used simultaneously. The OASYS also includes second-generation KARMA technology (with the first generation having first appeared in the Korg KARMA). It has either a 76 key synth-action, or 88 key hammer-action keyboard. Options EXB-DI (Digital interface board) The optional EXB-DI adds 8 channels of ADAT Optical format 24-bit 48 kHz digital output, as well as a word clock input. The EXB-DI was first made available for the Korg Triton Studio keyboard and Triton Rack module - on these units only 6 outputs are available via ADAT. Bar a few early models of the Oasys, the EXB-DI is user installable. Synthesis engines As of November 24, 2009 the latest version of the OASYS OS is 1.3.3a, featuring the following synthesis engines: HD-1: A PCM synthesizer, with 628 MB of preloaded samples and Wave Sequencing. EXs: A sample library that works by itself or with other engines. EXs-1 is a set of instruments and EXs-2 is a grand piano. AL-1: A 96-note polyphonic virtual analog synthesizer (84 notes in previous versions of the OS) CX-3: A modeled tonewheel organ based on the current CX-3 STR-1: A plucked string physical model LAC-1: Optional bundle (originally $249.00, but now available for free) including two virtual analog synthesizers, the PolysixEX and MS-20EX, which are updated models of the vintage Korg