CPU load / RAM usage / Disk space reduced
The cleanest frequency response ever
Echo bug minimized


Copper2 is a vintage classic graphic EQ plug-in for Nebula 4 / Nebula 4 Player. It provides colored, dense, gluing textures to your mixes. It captures all the nuances of a highly appreciated octave graphic EQ and represents, among many applications, the ideal choice for electric guitars.

Each band and preamp has been sampled without any converter / “calibration bias“ phase distortion. This allows to overlap the effect of more bands without adding unwanted coloration, reaching a new level of match with hardware for unparalleled results, even compared to hardware itself. This methodology is named SP Tech.


Audio Samples

We put great passion to get the perfect representation of the hardware. If you don’t trust our words, then trust your ears.


“Q” range
EQ full range [dB]
±10 with 81 steps (0.25dB circa)
Low Frequency Sliders [Hz]
50, 100, 200
Mid Frequency Sliders [Hz]
400, 800, 1.6K
High Frequency Sliders [Hz]
3.15K, 6.3K, 12.5K
Fixed Butterworth High-Pass filter can be activated to tame low end below 30Hz (not present in the original hardware unit)
Preamplifier (switch selectable)
10 harmonics
In Trim range [dB]
Out range [dB]
Sample rates
Copper2 is designed to provide the same sound quality at each of the following sample rates: 44.1KHz, 48KHz, 88.2KHz, 96KHz
SP Tech




Frequency Response @44.1KHz