Unison Research Unico Primo

The Unico Primo is Unison Research's entry point into the Unico hybrid line — and also an incredible audiophile value. This is not a beginner's amplifier dressed up in nice clothing. It's a genuine expression of the same design philosophy that runs through the Unico 90 and 150, realized in a smaller chassis at a more accessible price.

It's heavier than the price would suggest. That weight is an honest signal about what's inside.

The Circuit

A single ECC83 tube input stage, operating in Class A. The same tube used in the Unico 90 and 150 at their input stages — a high-gain, low-noise triode that establishes the amplifier's sonic character before the signal reaches the solid-state output devices. Zero global negative feedback throughout. The Primo applies the Unico circuit philosophy with fewer stages than the larger models, but without relaxing the core commitments that define the line.

What It Delivers

The harmonic richness and spatial quality of the ECC83 input stage, combined with solid-state control in the bass that smaller tube amplifiers often can't match. The Primo is not trying to be a miniature version of the Unico 150 — it's its own amplifier with its own character. For listeners entering the Unison Research ecosystem, or for those who want a second-system expression of the Unico sound, it's the right starting point.

Press Recognition

The Unico Primo has been reviewed by Hi-Fi+ and covered in European audio publications as exceptional value for the hybrid integrated category at its price point. It consistently earns praise for delivering genuine tube character without the usual compromises of entry-level implementation.

Specifications

• Input stage: Single ECC83, Class A tube
• Feedback: Zero global negative feedback
• Origin: Handcrafted in Italy

Authorized Unison Research dealer. Reach out to talk through how the Primo compares to the Unico Nuovo for your system and listening priorities.