The Black Box HG-Q is a 3U boutique hardware EQ and saturator offering true analogue, tube-driven processing with full digital plug-in control. It is not a traditional equaliser or a replica of a vintage unit, but a new kind of sound-shaping tool designed to go far beyond conventional approaches. The Black Box HG-Q reshapes and enhances audio with a level of control and tonal depth that standard EQs simply cannot achieve.
At the heart of the Black Box HG-Q is a unique design that blends flexible tube saturation with the ability to cut and boost frequencies simultaneously. This dual-mono, stereo, and mid-side capable unit features six fully independent, interactive EQ bands per channel. Its innovative circuitry adds musicality, harmonic richness, and energy without sacrificing clarity, taking analogue equalisation into new creative territory.
The saturation circuit is a defining element. Unlike conventional saturation that can blur transients or overwhelm a mix, the Black Box HG-Q enhances subtle details, strengthens density, and preserves the punch and definition of the original signal. This makes it ideal for adding weight and presence without compromising the integrity of the source.
With its interactive topology, the bands influence each other in complex and musically useful ways. The result is sonic shaping that exceeds the capabilities of traditional equalisers. The inclusion of a 2X mode doubles the gain range to ±16 dB and pushes saturation to even more expressive levels, allowing harmonic colour and creative tone sculpting even at extreme settings.
By using a combination of cutting, boosting, saturation, and toggling between series and parallel routing, users can create curves and tonal movements that would be impossible with standard EQs.
The Black Box HG-Q seamlessly integrates with its dedicated software plug-in, which provides complete digital control over the hardware’s analogue path. This connection offers precise recall and parameter control while retaining the character of full analogue processing.
The plug-in is more than just a remote interface. It also functions as a fully modelled software version of the Black Box HG‑Q, ideal for sessions where the hardware cannot be used directly. Additional features exclusive to the software include a spectrum analyser and extended visual feedback, allowing detailed insight into how frequency moves across the spectrum when a single band is adjusted. The expanded control layout provides individual knobs for every function, improving workflow and precision.
The Black Box HG‑Q stands out not only for its sonic character but also for redefining what an equaliser can be, offering new creative possibilities for sound design, mixing, and mastering.
Features
- A 3‑rack‑unit hardware EQ and saturator combining tube warmth with solid‑state precision
- Six fully independent EQ bands per channel with separate boost and cut circuits
- Integrated tube saturation within boost circuits for rich harmonics without compromising clarity
- Solid‑state cut filters for precise frequency removal
- Unique interactive band topology with series and parallel configuration options
- 2X mode offering up to ±16 dB boost/cut and intensified harmonic saturation
- Stereo, dual‑mono, and M/S operation for flexible stereo imaging
- True analogue signal path with no recall switches
- High‑pass filter control and adjustable Q‑factor for each band
- Customisable frequency selection with stepped controls on all bands
- Seamless plug‑in control via companion software
- Plug‑in emulation includes spectrum analyser and extended visual feedback
- Rugged 3U rack‑mount chassis built to Black Box’s boutique standards