KV331 Audio Offers SynthMaster One Free Through January 4

KV331 Audio opened 2026 with a short promotion: SynthMaster One, its wavetable synthesizer plugin, was made available for free download through January 4, 2026. The deal requires creating a KV331 account to register the plugin, and covers native plugin formats for macOS and Windows so you can drop the instrument into most modern DAWs immediately.

SynthMaster One packs a substantial feature set for a single-synth workflow. It provides two stereo wavetable oscillators with sub-oscillators, two filters including multiple zero-delay feedback modes, four ADSR envelopes, and two advanced LFOs. The synth’s flexible modulation matrix supports complex routings, while a multi-FX section with 11 effect types and a 32-step arpeggiator/sequencer add performance and production depth. The factory library includes 1,250 presets, offering a broad palette from pads and basses to evolving textures that often serve as starting points for vintage-inspired sounds.

Platform support covers VST, VST3, AU, and AAX on macOS, including Apple Silicon, and on Windows. To claim the free offer you must register a KV331 account and apply the license through the vendor’s registration process. KV331 also extended holiday discounts on expansion packs during the promotion period, making additional preset collections and wavetables more affordable if you decide to expand the instrument.

For collectors, restorers, and producers focused on vintage synth sounds, this free window is practical. Use SynthMaster One to audition tones you want to replicate in hardware, create hybrid setups where software fills gaps left by rare modules, or test patches before buying or repairing classic gear. The sizable preset library and modulation options make it a fast way to sketch patches that echo aged analog character without shipping or maintenance costs.

Act quickly: the promotional period is brief and ends January 4, 2026. If you want a versatile wavetable tool to augment a vintage-centered workflow or to audition sounds before investing in hardware, register a KV331 account and download the platform build that matches your DAW while the offer remains live.