Plugin Boutique is offering massive savings on a premium Sonnox mastering bundle, cutting the price by more than 80 percent as part of its ongoing Mastering Month campaign.

Available now for just £69, the package includes three acclaimed Oxford plugins from Sonnox — Oxford Inflator, Oxford Limiter, and Oxford Dynamic EQ — representing savings of up to 88 percent compared to their regular price.

The promotion follows Plugin Boutique’s earlier Mixing Month event and also features discounts across other major audio brands including Eventide, Solid State Logic, LANDR, and more.

Sonnox’s Oxford series has long been a staple among professional producers, mixing engineers, and mastering specialists across music, film, broadcast, and gaming. Known for delivering high-end sound quality and transparent processing, the plugins are designed to enhance everything from individual tracks to full productions.

Included in the bundle, the Oxford Inflator is widely regarded as a go-to mastering tool for adding warmth, depth, and perceived loudness without sacrificing clarity. The Oxford Limiter is built to maximize volume and punch while preserving the integrity and dynamics of a mix, making it ideal for polished, release-ready masters.

Rounding out the package is the Oxford Dynamic EQ, which offers five fully overlap-capable bands using Sonnox’s signature Type-3 EQ curves. The plugin provides precise tonal shaping and dynamic control for individual instruments, buses, and full mixes while maintaining the brand’s trademark transparency.

The deal is available through May 31 as part of Plugin Boutique’s Mastering Month promotion.