About

SPL has been developing and manufacturing analog and digital audio gear for the music, film, multimedia, and broadcasting industries since 1984. SPL products are respected worldwide for their innovative approach and user-friendliness, but most of all for their outstanding performance.

Among SPL's most celebrated developments are the patented Vitalizer® sound-optimization processing, the first-ever level-independent dynamic processor known as the Transient Designer, the 5.1 microphone system Atmos, as well as compact monitor controllers and channel strips.

The development of the SUPRA op amps by SPL allowed analog signal processing to outperform the best digital processing in terms of quality. These op amps, which make use of the unsurpassed 120-volt technology, were first used on the MMC mastering console. Ever since, the 120-volt technology has become a quality trademark of SPL products, including the Phonitor headphone amplifiers. More recently, SPL stormed the USB and MADI audio interface market with the introduction of the Crimson and Madison interfaces.

Its collaboration with German company Brainworx resulted in the Analog Code plugins, which translate to the digital realm the same quality expected from all SPL products. This relationship has led SPL to become a member of the Plugin Alliance.

With the Car Vitalizer app, SPL entered the smartphone market and redefined the concept of audio enhancement inside a car — without the need of any additional hardware or expertise. This know-how has allowed SPL to license its technology to major players in the auto industry.

Products

    • $349$29.99
    • SPL
    • PQ
    • ★★★★★
    • Switch between constant and proportional Q modes with this exacting emulation of the precise 120V rail mastering equalizer from SPL.
      • Hardware Emulations
      • Mastering
      • Sale
      • TMT inside
    • $199$29.99
    • SPL
    • Transient Designer Plus
    • ★★★★★
    • Shape the attack and sustain of transients with precision using SPL's Differential Envelope Technology.
      • Creative FX
      • Hardware Emulations
      • Made by BX
      • Sale
    • $199$24.99
    • SPL
    • Passeq
    • ★★★★★
    • The most powerful passive EQ on the planet: Target 72 frequencies per channel with separate boost and cut frequencies.
      • Creative FX
      • Hardware Emulations
      • M/S Inside
      • Made by BX
      • Mastering
    • $99$29.99
    • SPL
    • DrumXchanger
    • ★★★★★
    • Replacing drums in real-time (!) or adding samples to your real kit was never easier. Includes Samples! This is the easiest replacer on the planet!
      • Creative FX
      • Hidden Gems
      • Made by BX
    • $199$14.99
    • SPL
    • TwinTube
    • ★★★★★
    • Tube Tone and Warmth in an easy, smooth way. Make your bass drums, guitars and vocals stick out.
      • Hardware Emulations
      • Hidden Gems
      • Made by BX
    • $199$29.99
    • SPL
    • Vitalizer MK2-T
    • ★★★★★
    • Make music and speech more comprehensible, loudness more intense, and the stereo width of songs wider using the SPL Vitalizer MK2-T unmasking EQ.
      • Hardware Emulations
      • M/S Inside
      • Made by BX
      • Mastering
      • Sale
    • $149$29.99
    • SPL
    • De-Esser Collection
    • ★★★★★
    • Vintage & Modern De-Essers for removing sibilant frequencies without compromising the timbre and character of your vocals - some of the most musical sounding De-Essers around.
      • Hardware Emulations
      • Hidden Gems
      • Made by BX
      • Sale
    • $149$19.99
    • SPL
    • EQ Ranger Plus
    • ★★★★★
    • 181 Instrument-specific 500 Series EQs in one! Beautiful passive coil-filter sound, easy to dial in!
      • Hardware Emulations
      • Hidden Gems
      • Made by BX
    • $49$9.99
    • SPL
    • Attacker Plus
    • ★★★★★
    • Punch up the attack of percussive sounds with this Microplug featuring the attack portion of SPL’s Transient Designer Plus.
      • Creative FX
      • Hardware Emulations
      • Made by BX
    • $49$9.99
    • SPL
    • De-Verb Plus
    • ★★★★★
    • The De-Verb Plus Microplug employs SPL’s renowned Transient Designer processing to seamlessly pull room tone and/or reverb out of your audio.
      • Hardware Emulations
      • Made by BX
    • $49$9.99
    • SPL
    • Mo-Verb Plus
    • ★★★★★
    • Enhance the Sustain of any audio signal! Great on snares and keys.
      • Hardware Emulations
      • Made by BX
    • $299$29.99
    • SPL
    • IRON
    • ★★★★★
    • Iron is a modern “Vari-Mu” tube compressor, built for mastering and bus compression, with a beautifully musical sound and incredible options for color.
      • Hardware Emulations
      • M/S Inside
      • Made by BX
      • TMT inside
    • $249$39.99
    • SPL
    • HawkEye
    • ★★★★★
    • An audio metering suite that contains a Level Meter, Loudness Meter, Bit Monitor, Vector Scope, and Spectrum Analyzer.
      • DESKTOP APP
      • Mastering

Recent Articles

Recent Reviews

  • Howie Weinberg

    Howie Weinberg

    15 Grammy Awards, 32 Grammy nominations

    As an owner of the original hardware SPL PQ, Plugin Alliance made a unit that truly mirrors the original sound - warm and really analog sounding.

  • Joost van den Broek

    Joost van den Broek

    Producer, Arranger & Mixer (Blind Guardian, Powerwolf, Ayreon)

    This plugin really adds the ultimate parametric EQ to your in-the-box toolkit. Amazing to have this famous master EQ as a plugin now!

  • Eric Racy

    Eric Racy

    Mixing Engineer & Producer (Katy Perry, Pharrell, Lil Wayne)

    Like most people, I have countless EQ plugins. Generally, EQ plugins are either surgical tools that allow you to fix issues or they are good at “sweetening” and broad stroke enhancement. The PQ manages to allow you to do both and do them incredibly well! Even at really tight Qs, the results are natural and surprisingly transparent which lets you really dig into a mix to solve issues effectively. For problem solving, the proportional Q changes the character in a way that doubles the flexibility and gives you a different way to reach into the mix. On the flip side, widening out the Q or putting it into proportional mode and boosting frequencies gives you the ability to bring out and enhance the best parts of your mix or source in an extremely euphonic way, without putting too heavy a stamp on it. Really, really great!