25 years of sonic vision
From consulting to Hypercars: a journey driven by a single obsession — turning technology into emotion.
Domenico Simonetti's vision
Delta Sigma was founded 25 years ago from the vision of Domenico Simonetti, with a clear and ambitious idea: to transform technology into emotion. From an initial activity in consulting and accessory development, the company rapidly evolved into the design and manufacture of high-end amplifiers for home listening.
In parallel, Delta Sigma develops bespoke audio solutions for the exclusive world of Hypercars — a sector where engineering and luxury meet, and where every centimetre of space and every decibel count.
A living sound, harmonically rich,
precise in detail and natural in balance.
Every Delta Sigma amplifier is shaped around a single goal: to recreate the sonic event experience in its most authentic essence. A listening experience that invites you to stay, hour after hour. Because for us, high fidelity is not just technique: it is emotion, immersion, time standing still before music.
One philosophy, three levels of expression.
All our amplifiers share the same core architecture, the beating heart of the Delta Sigma sonic signature. As power increases, the sound gains greater authority, control and depth — always maintaining balance, musicality and naturalness.
Integrated Amplifiers
The range starts from the most compact 150 W amplifier, continues with the 180 W and 220 W versions. A coherent progression, with a recognisable timbral identity at every level.
- Shared architecture, Delta Sigma sonic signature
- Timbral continuity throughout the range
- Three power levels: 150 W · 180 W · 220 W
300 W Monoblock Amplifiers
The pinnacle of our vision. Where dynamics, control and realism merge without compromise. Each channel has its own dedicated unit: maximum separation, maximum power.
- 300 W per channel, monoblock configuration
- Maximum-capacity power supply stage
- Absolute dynamics, authority and depth
Class A Preamplifiers
Entirely built in Class A, up to the top-of-the-range model with inductive power supply. Designed to maximise the potential of our amplifiers and guarantee absolute sonic coherence.
- Pure Class A operation
- Top model with inductive power supply
- Total sonic coherence with the Delta Sigma range
Designed around you
We offer the possibility of creating fully bespoke products, designed to meet specific aesthetic and functional requirements. Shapes, materials and finishes are chosen together with the client, giving life to unique solutions.
Conceived to integrate seamlessly into any environment — whether a high-end listening room, a superyacht or a Hypercar cabin — and to fully reflect the vision of those who commission them.
Contact us for a custom project
Chosen by brands that demand the absolute
Design, engineering and reliability at the state of the art.
Chosen by the most demanding brands
Custom audio systems with laboratory-grade standards and dedicated end-to-end support.