Milestones of the company’s R&D history were:

• the invention of the patented Vitalizer® sound optimization
• the invention of the Transient Designer – the mother of all transient designing tools
• the invention of the Auto-dynamic De-Esser – eliminating S-sounds by phase cancellation
• the launch of the world's first discrete 5.1 surround miking system Atmos 5.1 already in 1998
• the development of the SPL 120V rail op-amps which are the integral components of the top-of-line SPL products, setting new benchmarks in audio signal processing to outperform any existing analog or digital audio format.
• the invention of the Phonitor matrix that produces a loudspeaker equivalent playback on headphones

SPL strives to create innovative and fascinating audio products.