The No.31 is a pure reference model, shaped by the design of the impressive No.32, but utilizing a newly developed 12″ (350mm) carbon fiber driver. Every aspect of the No.31 has been upgraded and refined compared to its predecessor.

The No.31 offers the classic reference filter used in the No.32, the same dual parametric filters, and a driver that manages three times the power for a truly exhilarating experience.

The design of the No.31 is sleek and features a pleasing silhouette that sits close to the ground. It retains the elegant gold handles and the weave that allows for the flow of large amounts of air without noise.

The No.31 supports the same vertical stacking of linear arrays as the No.32, offering transformative performance that no competitor has achieved. The array lines release the ultimate dimension of the system's reproduction.

The 1,000 watt amplifier of the No.32 is also present in the No.31, but limited to 900 watts for the perfect complement to the 12” bass driver. It allows for maximum dynamics while ensuring a long and enjoyable life for both components.

The incredible displacement of the 12” pure carbon fiber driver allows it to play as loudly as its bigger sibling. It offers the feel, liveliness, and aggressiveness that only the best subwoofers can provide.

Take control of the No.31 with the REL Reference Remote Control. The feel in your palm showcases the quality and durability of the product.