Gladiator 4 by Tone2 is a powerful synthesizer featuring the exclusive HCM synthesis method, 1200+ presets, 40 filters, and 37 effects for creating unique sounds.

Core Synthesis Technology
Gladiator 4 is built around Tone2’s exclusive Harmonic-Content-Morphing (HCM) synthesis, which utilizes 256 dynamic spectral snapshots per sound. This allows for morphing and manipulation of harmonic content, providing a unique approach to sound generation not found in other synthesizers. The HCM engine is complemented by a wide range of traditional synthesis methods, including FM, PWM, subtractive, AM, PM, waveshaping, and more, all of which can be freely combined.
The synthesizer supports up to 18 oscillators per voice with 4x stereo unison, delivering a rich and detailed sound. A powerful randomization feature can generate new, musically useful sounds with a single click, making it an excellent tool for sound design and inspiration. The combination of these technologies expands the creative possibilities for producers and sound designers.
Sound Library and Filters
Gladiator 4 ships with a comprehensive library of over 1200 presets crafted by professional sound designers, neatly organized into categories for quick access. These presets cover a broad sonic range, from warm and clear to rich and complex, making the synth suitable for various musical genres and production styles.
The filter section includes 40 different filter types, including low-pass, high-pass, band-pass, vocal, comb, EQ, FM, AM, phaser, and analog models. Many of these filters are exclusive to Tone2 products, offering distinctive tonal shaping capabilities. This extensive filter selection allows for precise sound sculpting and adds to the instrument’s versatility.
Effects and Modulation
Gladiator 4 includes 37 carefully crafted stereo effects, ranging from reverbs and delays to flangers, phasers, chorus, ensemble, rotary, bitcrusher, talkbox, and ringmod. It also features Dolby Prologic II surround encoding and a waveshaper, providing extensive sound processing options without the need for external plugins.
The modulation section is powerful and user-friendly, featuring four fast envelopes and 22 LFOs that can be synced to the track’s BPM. The Step LFO, inspired by step sequencers, is ideal for creating rhythmic sequences and trance gates. This flexibility enables dynamic and evolving sounds, making Gladiator a versatile tool for both melodic and rhythmic compositions.
Psychoacoustic Processing and Usability
Gladiator 4 incorporates a psychoacoustic post-processing module that mimics the human ear’s response, resulting in deeper basses and added transparency. An innovative phase modifier, based on phonetic science, can make digital waveforms sound warm, silky, or punchy, enhancing the perceived quality of the sound.
The user interface is designed for flexibility, with 14 different interface sizes and support for high-resolution displays including Retina, 4K, and 8K. Context-sensitive tooltips and a manual in five languages make it accessible to a wide audience. The synthesizer is optimized for low CPU usage and high reliability, ensuring smooth performance in professional production environments.
Key features
- HCM synthesis with 256 spectral snapshots
- 18 oscillators per voice with 4x stereo unison
- 40 filters and 37 effects included
- 1200+ presets from professional sound designers
- 22 LFOs with BPM sync and step sequencer
- Psychoacoustic post-processing
- 14 interface sizes with Retina/4K/8K support
- Multiple synthesis methods combinable
Best for
Gladiator 4 is ideal for electronic music producers, film composers, and sound designers seeking a distinctive, characterful synth for leads, basses, and soundscapes. Its HCM synthesis and extensive presets make it suitable for creating unique textures and evolving pads, as well as for quick inspiration through randomization.