SA4000 Stereo Buss Compressor

Classic VCA Buss Compression


The SA-4000 Stereo Buss Compressor is the most authentic recreation of the bus compressor found in the center section of the legendary SSL G Series Console. An overwhelming favorite among mix engineers, the SSL G Comp has very likely shaped more hit records than any other over the past three decades. Strap it across your 2-bus and hear your mix get punchier, bigger, more powerful, and glued together with unmatched cohesiveness. The SA4000 Stereo Buss Compressor gives you the same famous character, compression behavior and frequency response as the original. And it does it at a fraction of the price.


At the heart of the SA-4000 are 4 THAT 2181X VCA’s which perfectly match the original unit both in signal to noise ratio, and frequency response.

The SA-4000 has electronically balanced outputs to ensure the best audio performance possible.

Plus, to make it feel great and look right, the unit comes with premium Sifam knobs and VU meters.

There is no compromise in parts throughout the entire circuit which ensures you get a compressor that behaves and sounds 100% accurate to the original.. All our units are hand made and calibrated in our workshop in Chile where they get a full health check twice and burn for 24 hours.


While plugins have come a long way and are incredibly useful, there’s a reason the top engineers still have analog gear in their racks. And some of the biggest gains to be made if you’re mixing “in the box” is to use quality hardware on your master buss.

When you strap the SA-4000 Stereo Buss Compressor over your master buss your mix will instantly glue together and sound more cohesive. Small adjustments will bring more punch, tightness, power, and size to your mix, all without sacrificing clarity. Simply put your mixes will sound like a record should!

Legendary on the Mix Bus. Magic on the drum bus. Its one of those rare pieces that just makes things sound better regardless of musical style.


Stam Audio Engineering products are about sound quality first and foremost. Every component of every unit is premium quality and carefully selected to ensure our units match or even surpass the quality of high end boutique gear.

So when you see the price for the SA-4000 the first thing you probably think is: how is that possible?

The answer is two fold.

First, we work on small margins. We want to see professional gear within the reach of anyone who has the passion to use it so we’re willing to sacrifice profits to make this possible.

Secondly, we order in large batches. This keeps our costs as low as possible, and allows you to get your hands on our units at a much cheaper price.

That said, how much will a SA-4000 set you back?

The stock price for the SA-4000 is $599US.

Right now though, if you put a $100 deposit down to preorder your unit you will get the discounted price of $599.


If you’ve worked on a classic SSL G Series desk and strapped the G Buss Comp across your mix, we’re extremely confident the SA-4000 will put a big smile on your face every time you use it. However if you’ve never touched the original before, as gear lovers ourselves we understand that the only way to really know if a piece of gear is for you, is to put it through it’s paces. That’s why the SA-4000 Stereo Buss Compressor comes with a 30 day money back guarantee. This allows you to get it into your rack and see how it impacts your recordings. If you love it (and we think you will!), great… keep the unit and create amazing music with it. If not, no problems. Just send it back to us and we’ll fully refund your purchase. And don’t worry, either way you decide to go we will remain friends.


The first 100 pre-orders for the SA-4000 lock in a $100 discount. Instead of the normal $699 you will receive your unit for just $599. To lock in your unit hit the add to cart button below and put down a $100 deposit. Once you’ve put your deposit down the balance for your unit will be $499 which will be due once it has been completed.