SP MODE is an update for the S950’s own sampler OS. Normally the S950 closes its 36 dB anti-alias filter whenever a sample plays below its original pitch. SP MODE switches that filter tracking off on all 8 voices, so pitched-down samples keep their top end and alias the way an E-mu SP-12 does. Sampling, editing and disk functions work like on the stock OS.
- SP MODE on the Master Tune page: filter tracking off on all 8 voices
- Switch it from the front panel or via MIDI CC 77, live while playing
- FILTER 0-99 covers the whole range, about 166 Hz to 20 kHz on a log curve
- Finer filter steps with a 16-bit divider instead of 8-bit
- Filter clock never drops below 8 kHz, which keeps clock bleed out of the audio
Demo video
SP MODE on a stock S950: sine samples on 8 voices, then a Rhodes and the Amen break against an E-mu SP-12.
Requirements: Akai S950, floppy drive or Gotek, no EPROM swap. Delivered as disk image + quick guide. Back to stock: boot from the internal ROM. Because of the new filter curve, existing programs can sound different than on the stock OS.
All OS Mods for vintage samplers
Use at your own risk. Back up your disks and samples before installing. TailOut Studios is not liable for damage to instruments, disks or data, or for loss of value of vintage hardware, unless caused intentionally or by gross negligence; liability for injury to life, body or health, under the German Product Liability Act and statutory consumer rights remain unaffected. Akai, S950, E-mu and SP-12 are trademarks of their respective owners, used solely to identify compatibility. This product is independent and not affiliated with or endorsed by them. Legal notes
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