Feel the music, as if it were live
Composizione SII is StereoSan’s most ambitious loudspeaker: a high-efficiency three-way system designed to deliver a full, dynamic, and deeply engaging sound, just like a live performance.
Every note arrives with power and precision. Every nuance is preserved, free from compression or compromise.
The sound takes shape, becomes presence. It doesn’t remain trapped inside the speaker, it expands into the space, as if born from a real concert unfolding before you.

Technical features
- Three-way system with compression drivers (mid and high frequencies)
- Multicellular horn loading inspired by classic cinematic systems
- Carefully selected high-efficiency drivers
- Transformer-aligned crossover
- Reflex cabinet without traditional port
- Out-of-band suspended decoupling
- Rear emission control treatment
Details
- Woofer: 15” EMS, ferrite magnet, 8 ohms
- Midrange: Lamar Audio, compression driver, neodymium magnet, carbon dome (Western 555 inspired)
- Tweeter: Lamar Audio, compression driver, phenolic dome, neodymium magnet, bronze horn
- Mid horn: Multicellular birch wood horn, tar-filled (developed by StereoSan and Klughorn)
- Frequency response: 30 Hz – 20 kHz
- Efficiency: 100 dB – 8 ohms
- Crossover: Transformer-based, 12 dB/octave
- Crossover points: 500 Hz (electrical), 5000 Hz (mechanical + electrical)




Why it’s different
Composizione SII brings together refined technologies, hand-picked materials, and fully artisanal design.
It wasn’t built to impress with brute power, but to move you through depth, nuance, and sonic naturalness.
Every technical choice serves one clear purpose: to give music back its original impact.
It’s made for those who want to turn every track into a performance to be lived, so you can:
- Enjoy music with surprising detail and physical presence
- Create a unique, immersive and personal listening environment
- Rediscover every recording as if it were happening in front of you
Music you can see
Discover what happens when sound stops being a background…
and becomes an event again.

Music you can see
Most hi-fi systems compress dynamics and flatten emotion.
Composizione SII restores the music’s full range of motion: rich, vibrant, and powerful.
How? Through an acoustic design that’s both sophisticated and essential, with carefully selected drivers, custom transformer-based crossover, and construction techniques that minimize unwanted emissions and vibrations.
Discover what happens when sound stops being a background…
and becomes an event again.
