AIR Music Technology Stereophonic EQP is a professional plugin that is a virtual emulation of the classic Pultec tube equalizer. The instrument accurately reproduces the legendary analog circuit, renowned for its ability to create deep and dense low frequencies and soft and airy highs.
AIR Music Technology Stereophonic EQP is a high-quality software emulation of the legendary Pultec tube equalizer, which has become the gold standard in the recording industry. These original devices were prized by sound engineers for their unique ability to create incredibly deep and dense low frequencies and a soft, clean, and airy high range. This plugin fully recreates this authentic analog performance, bringing the warmth of vintage hardware to the digital realm.
The main difference and advantage of this version is its deep adaptation to modern standards of working with stereo space during mixing and mastering.
Key Features and Management Architecture
Unlike a classic monophonic device, the Stereophonic EQP offers advanced functionality designed for comprehensive control of the stereo field.
Stereo Modes
- Stereo: Standard mode, in which frequency changes are applied to both left and right channels simultaneously.
- Dual-Mono: Allows you to adjust the EQ for the left and right channels completely independently. This is indispensable for correcting frequency imbalances or creating artistic stereo effects.
- Mid/Side (M/S): Splits the signal into a central component (Mid) and a side component (Side). You can add tight bass to the center of the mix while simultaneously boosting the airy high frequencies on the sides, making the composition subjectively wider and more spacious.
Frequency Correction Section
- Low Frequency: Allows you to select the operating frequency (20, 30, 60, 100 Hz) and has separate knobs for simultaneous Boost and Attenuate.
- High Frequency: Responsible for shelving and bell filters in the mid and high frequencies with the ability to adjust the bandwidth.
- Individual Channel Bypass: The tool allows you to bypass the processing separately for each channel, which makes it easier to compare the “before and after” sound.
The famous Pultec Trick
This plugin perfectly reproduces the original hardware’s signature feature—simultaneous boost and cut at the same low frequency. Due to the design of the analog circuit, their curves don’t completely cancel each other out. The result is a powerful, focused low-end punch with a subtle cut of the muddy lower mids just above. This gives the kick drum and bass incredibly punchy.
Who is Stereophonic EQP suitable for?
This tool is designed for professional use at various stages of production:
- Mastering Engineers: Using the Mid/Side mode helps impart a rich analog shine to the final mix and expand the stereo base without losing density.
- Drum and Bass Mixing: The plugin instantly solves the problem of a weak low end by separating instruments by frequency and adding weight.
- Vocal and Pad Processing: Smooth highs allow vocals to be brought forward or synth pads to be voluminous and enveloping.

- Download AIR Music Technology – Stereophonic EQP v1.0.2.255 VST, VST3, AAX x64 [09.2026]
- Original Publisher: AIR Music Technology
- Version: v1.0.2.255
- Format: VST, VST3, AAX
- Category: VST Plugins
- Require: Windows 10+ & R2R SYSTEM
- License type: Full
- Download Size: 46.1 MB

