FM Xpanded - PSR-S

FM Xpanded - PSR-S
FM Xpanded for the PSR-S770/S775/S970/S975


Please note: This pack is brought to you by a third-party company and is not eligible for PSR-S-related promotions.

"FM Xpanded" is useable for:

  • Yamaha PSR-S770
  • Yamaha PSR-S775
  • Yamaha PSR-S970
  • Yamaha PSR-S975

The content of "FM Xpanded":

  • 60 Expansion Voices
  • 10 Registration Banks (80 Registrations)
  • 48 Multisamples / 160 MB Samples (AIFF linear)

The sound library "FM Xpanded" offers sample-based FM-sounds with highest dynamic control and authenticity. It includes DX-oriented sounds as well new and innovative sound creations.

What is "FM"?

FM is the abbreviation of Frequency Modulation.

Here oscillators are modulated by other oscillators – their amplitude and frequency then characterize the sound.

FM synthesis was developed in 1967 by the American scientist Prof. Dr. John Chowning at Stanford University and was made public in 1973. One year later the Yamaha Corporation bought the patents on this revolutionary synthesis system.

In 1983 the Yamaha DX7 was introduced and turned the synthesizer world upside down, leaving synthesizer legends like Moog and Oberheim behind.

Countless music productions featured the all new sound of the DX7 – having its strengths in unique E-­Pianos, Synth Basses,Harps, Organs, and metallic sounds. The dynamic range of these sounds became the standard for all future digital sounds.

After the groundbreaking success of the DX7, the FM synthesis has found its way into a large range of Yamaha synthesizers like TX7, TX816, DX21,TX81Z, DX27, DX100, FB01, DX7II, TX802, V50, SY77, SY99, FS1R, DX200.

The last device from Yamaha using FM was the plug­in board PLG150­DX which can be installed into host synthesizers like theMOTIF ES, MOTIF-RACK ES, or S90 ES.

Sample-Partial-Programming (SPP) for expressive and dynamic FM-sounds

The multisamples were recorded in several dynamic levels for re-building the high dynamics of FM-synthesizer.

The original FM-sounds were not simply sampled 1:1.

EASY SOUNDS developed FM-partials, which are mapped as User Waveforms and combined to new FM-voices using up to 8 voice elements of the MOTIF XS. The technique of Sample-Partial-Programming (SPP) offers a very high level of flexibility allowing creative sound design. You don’t need to be an expert for making individual edits!

For the sample-production beside the legendary DX7, other FM-synths like SY99, FS1R, DX200 or FM8 were used.

Many of the delivered voices lean toward the classic DX7 Voices. They give the feeling of playing a real FM-synth.

Impressive stereo sounds are available like the DX7II with wide panning.

By combining different FM-partials, there are also many new sounds with independent character.

The following voice-types are included in FM Xpanded:

  • DX Electric Piano
  • DX Jazz Guitar
  • DX Clavinet
  • DX Organ
  • DX Straton
  • DX Harp
  • DX Flute
  • DX Brass
  • DX Horns
  • DX Strings
  • DX Bells
  • DX Harmonica
  • DX Synth Lead

The registrations are combine the FM voices with styles and preset voices. Beside classic keyboard-split-styles, there are also registration banks with the CHORD FINGERING setting "FULL KEYBOARD", which are very useful for accompaniment of vocals or solo instruments. You can also play jazzy chord progressions.

Overview of the Registration Banks:

  • Bank1 = Registrations-Type "FM Keyboards – SplitStyles" – Vol. 1
  • Bank 2 = Registrations-Type"FM Keyboards – Split Styles" – Vol. 2
  • Bank 3 = Registrations-Type"FM Keyboards - Full Keyboard Styles" – Vol. 1
  • Bank 4 = Registrations-Type"FM Keyboards - Full Keyboard Styles" – Vol. 2
  • Bank 5 = Registrations-Type"FM Solo Voices - Split Styles" – Vol. 1
  • Bank 6 = Registrations-Type"FM Solo Voices - Split Styles" – Vol. 2
  • Bank 7 = Registrations-Type"FM Solo Voices - Split Styles" – Vol. 3
  • Bank 8 = Registrations-Type"Live Players Bank“
  • Bank 9 = Registrations-Type"Hybrid Keyboard Sounds - Live Players“
  • Bank 10 = Registrations-Type"Hybrid Keyboard Sounds - Full Keyboard" 


This product requires a compatible Yamaha Arranger Workstation keyboard such as the PSR-S or A Series. Please select your specific instrument in the Instrument Compatibility section to determine if this product is compatible.


  • Producer Easy Sounds
  • Memory Requirement 160 MB

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VSE Tutorial for the PSR-S70 Series