Kerwax Replica

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The Kerwax Replica is a two-channel tube line preamplifier based on the Kerwax Studio  24-channel vacuum tube mixing console.

The Kerwax Replica is inspired by tube amplifiers designed in the 1950’s and 1960’s. Integrated into a 5U racks chassis, it lets you exploit the different characteristics of vacuum tubes such as compression and distortion. As a result, this line preamp offers a rich tone and thick texture not available in today’s modern digital equipment.

At its heart of each channel lie two 12AX7 valves, one for the preamplification stage and the other for saturation purposes. These valves have been used for their wide variety of sources. However, they are easily swapped for different tones.

Its very distinctive sound can be further tweaked with the Trim and Bias controls that let you adjust the depth of your sound and its harmonic content. As you increase the gain, more saturation is produced giving you the thickness that only valve preamp can give.

Furthermore, this stunning preamp boasts a two-band EQ with gentle Baxandall curves that offer musical and smooth tone shaping capabilities. It also includes a switchable High-pass filter with a choice of two frequencies: 80Hz and 120Hz to remove unwanted low-end information.

The Kerwax Replica is an amazing tool for mixing and mastering and offers a choice between L/R for individual track processing or M/S to control the stereo image, making ideal for mastering operation.


The Kerwax Replica comes from Kerwax Studio, a residential all-analogue recording studio based in Brittany, France. It is fully-loaded with vintage equipment from the 1940’s to the 1970’s carefully collected by a Christophe Chavanon, a passionate engineer and vintage equipment collector.

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