SPL has been designing and manufacturing analog and digital audio equipment for the music, film, multimedia and broadcasting industries since 1984. SPL products are respected all over the world for their innovative approach and user friendliness, but above all for their outstanding performance. SPL Attacker 1.1 - designed to enhance the attack of the sound of the instrument. It works in the same way as the corresponding section in the "Transient Designer" SPL Attacker Plus 1.3 - it provides the same magical envelope shape that the original Transient Designer hardware provided by the Attack knob provides. Uses differential envelope technology that has revolutionized dynamics processing using a level independent methodology. SPL De-Essers 1.9 is a highly specialized audio tool for removing unwanted sibilant / sibilant frequencies in a very simple and musical way without compromising the timbre and natural character of the voice. SPL De-Verb Plus 1.3 - Provides a portion of the same magical envelope shape that the original Transient Designer hardware provides, replicating the decay provided by the Sustain knob to reduce decay in your sounds. SPL DrumXchanger 1.9 is a powerful tool for optimizing drum tracks. Accurately recognizes the weakest ghost notes - regardless of their dynamic level. SPL EQ Ranger Plus 1.3 - emulation of the passive equalizer SPL RackPack series. SPL Free Ranger 1.12 SPL IRON1.0 - combines the best of the legendary vintage compressors and offers parallel signal processing using a two-tube circuit. SPL Mo-Verb Plus 1.3 - Reverb Tail Amplifier. It has just one knob to boost and cut sound attenuation, plus soft peak limiter and dry / wet control. SPL Passeq 1.9 is a passive equalizer that reproduces the quality of original hardware devices. SPL Transient Designer Plus 1.4 - modeled on the analog device of the same name from SPL and contains only two controls: Attack - can be amplified or attenuated up to 15dB and Sustain - can be boosted or attenuated up to 24dB. SPL TwinTube1.12 - combines the two main artifacts that tubes can produce: harmonics and saturation. SPL Vitalizer MK2-T 1.12 - applies the principles of psychoacoustics and audiometry to improve the sound of audio material.