Music That Feels Alive

The Unison Research Unico 90 Integrated Amplifier makes music feel alive — unfolding in space with soul, presence and detail that stop you in your tracks. Crafted in Italy, it's a hybrid integrated that blends old-school tube magic with modern muscle: a pure Class A tube input stage (ECC83/ECC81 in a totem-pole configuration) feeding a robust Class AB HEXFET output. There's no global feedback, just two direct signal stages, so what you hear is honest, rich and incredibly engaging.

Power With Poise

With 100 watts per channel into 8 ohms (160W into 4 ohms), the Unico 90 doesn't just drive speakers — it unlocks them. Bass-heavy tracks hit hard with control and composure, while subtle acoustic textures remain fully intact. From high-sensitivity designs to demanding floorstanders, it adapts effortlessly, lighting up loudspeakers from top to bottom. And because it imposes so little of its own signature, swapping a source or DAC reveals the change clearly: this amp reveals rather than masks.

A Purist Design, Beautifully Executed

The zero-global-feedback, two-stage architecture keeps the signal path short and transparent, while a dual-mono layout maximizes channel separation and stereo imaging. Six inputs — three RCA, two XLR and an RCA bypass input for home-theater integration — plus bi-wiring-ready terminals make it as flexible as it is musical. As Twittering Machines put it, the Unico 90 offers "stiff power, agility, and heart."

Why You'll Love the Unico 90

• 100W into 8Ω (160W into 4Ω) of hybrid tube-plus-HEXFET power
• Zero global feedback for an honest, direct, deeply musical sound
• Balanced XLR and single-ended RCA inputs, plus an AV bypass input
• Dual-mono layout for pinpoint imaging and wide soundstage
• Bi-wiring-ready terminals and beautiful Italian build quality

Frequently Asked Questions

Does the Unico 90 have balanced inputs?

Yes. It offers six inputs in total: three RCA, two XLR balanced, and one RCA bypass input for easy integration with an AV or home-theater system.

What does "zero global feedback" mean for the sound?

It means the amplifier uses only two direct signal stages with no overall feedback loop, resulting in a more honest, transparent and engaging presentation that reveals the true character of your source components.

Will it drive demanding floorstanders?

Yes. With 100W into 8 ohms and 160W into 4 ohms from a Class AB HEXFET output stage, the Unico 90 handles everything from sensitive standmounts to power-hungry floorstanders.

Unico 90 Technical Specifications