SSL G3 MultiBusComp Review: How I Use It on My 2-Bus for Structure and Glue

Why the SSL G3 MultiBusComp Has Stayed on My Mix Bus

I’ve been using the SSL G3 MultiBusComp for about six months now, and while it wasn't instant, it’s slowly finding a permanent place on my 2-bus. Over time I realised something. It gives the mix a solid, confident hold without sounding forced

There’s a definition to it. The compression feels structured rather than squeezed.

Here’s how I’ve been using it.

How I Set Up the SSL G3 MultiBusComp on the 2-Bus

1. I Start with the Mid Band

I solo the mid band (using the headphone icon).

I treat this as the anchor of the mix.

Then I adjust the crossover frequencies:

• On the left side, I find the body of the kick by setting the low-to-mid crossover.

• On the right side, I find the top of the snare by setting the mid-to-high crossover.

By isolating this area, I’m essentially controlling the main body of the track.

In electronic music especially, that low-mid region carries the weight and drive. Once that feels stable, everything else tends to fall into place.

Attack and Release Settings

For the mid band:

• Release: Mostly left on Auto

• Attack: Usually between 10ms and 30ms

For me, 30ms is the sweet spot.

It lets enough of the transient through so the kick and snare still feel round and confident. The compression holds the body rather than flattening the impact.

If 30ms feels too explosive, I’ll drop to 10ms. That tightens things without killing the energy.

Auto release works well here. It breathes naturally and avoids obvious pumping. On a mix bus multiband, that musical movement matters more than clinical precision.

Moving to the High and Low Bands

Once the mid band feels right, I move to the high and low.

Most of the time:

• Attack = same as mid

• Release = Auto

• Main change = Ratio

The ratio becomes the tone control.

It’s less about “clamping down” and more about asking:

• Is the low end moving too much?

• Are the highs jumping forward unpredictably?

The low band might get slightly more control if the kick and bass are pushing too hard.

The high band might get a touch more ratio if the top end feels edgy.

After that, I adjust the high and low makeup gains to match the mid and bring everything back into balance.

That final gain matching step is important. It keeps the compression feeling intentional rather than corrective.

Why It Works So Well on the 2-Bus

The SSL G3 MultiBusComp isn’t a surgical mastering multiband.

It behaves more like a musical shaping tool.

What I’m hearing when it’s set right:

• The mix feels denser without sounding limited

• The low end tightens without losing weight

• The centre feels controlled but not squashed

• The track holds together in a confident way

It’s subtle, but it’s structural.

And that’s why I’m reaching for it more often than I expected.

What About the 4K Drive and Advanced Sidechain?

The SSL G3 MultiBusComp is known for its per-band 4K Drive and flexible sidechain routing.

So far, I haven’t really felt the need to lean on either.

The compression itself is doing the structural work I’m after.

That said, both features are powerful. A subtle touch of 4K Drive on the mid band can add harmonic density and a slightly more forward centre. And the advanced sidechain routing allows you to focus compression more intelligently – for example, preventing excessive low-end energy from triggering unnecessary gain reduction.

I can see both becoming more useful at a mastering stage, where very small tonal and behavioural refinements can help bring a mix together even further.

For now though, the core compression behaviour is enough.

A Note on HQ Mode

There’s also an HQ mode, which increases internal processing quality through oversampling. I tend to leave this engaged on the 2-bus. It doesn’t dramatically change the tone, but it keeps the top end cleaner, particularly if using 4K Drive or pushing the bands a little harder. It’s more refinement than colour.

The Logic Behind This Setup

There isn’t one fixed way to use the SSL G3 MultiBusComp, but this approach reflects how multiband compression tends to work best on a mix bus:

• Anchor the core (mid band first)

• Let transients breathe (10–30ms attack)

• Use auto release for musical movement

• Adjust ratios per band instead of wildly different timing settings

• Rebalance with makeup gain

The key is restraint.

On my 2-bus, I’m rarely pushing more than 1–3 dB of gain reduction per band. It’s about stability, not domination.

Final Thoughts on the SSL G3 MultiBusComp

The SSL G3 MultiBusComp has surprised me.

I didn’t expect to use a multiband compressor this often on my 2-bus. But when it’s set gently and deliberately, it doesn’t feel like “multiband compression.”

It feels like structure.

And in electronic music especially, that sense of structure is everything.