
The Triode 25 is Unison Research's flagship single-ended triode amplifier, delivering 25W of pure Class A power from a pair of 845 output tubes. This hand-built masterpiece represents the pinnacle of Italian tube amplifier design, combining exceptional craftsmanship with soul-stirring musicality.
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The Triode 25 delivers the magical sound that only single-ended triode amplifiers can provide. The bass is warm and full, with excellent weight and texture. The midrange is liquid and dimensional, with exceptional presence and realism. The treble is sweet and extended, with remarkable decay and air. The overall presentation is organic and three-dimensional, creating a holographic soundstage.

The IS-1000 Deluxe is Gold Note's flagship integrated amplifier, combining exceptional power with refined musicality. This fully balanced design delivers 125W per channel into 8 ohms, with the ability to double into 4 ohms. The optional DAC and phono modules transform it into a complete audio hub.

The IS-1000 Line is Gold Note's acclaimed integrated amplifier, offering exceptional performance at a competitive price. This design delivers 125W per channel into 8 ohms, with the ability to double into 4 ohms. The result is an amplifier that combines power with musicality.

The PA-1175 is Gold Note's reference power amplifier, designed for those who demand the ultimate in power and control. This dual-mono design delivers 175W per channel into 8 ohms, with the ability to double into 4 ohms. The result is an amplifier that can drive any speaker with authority.

The Simply Italy is Unison Research's acclaimed entry-level tube integrated amplifier, delivering 12W of pure Class A power from a pair of EL34 output tubes. This elegant design combines Italian craftsmanship with accessible pricing, making tube amplification available to a wider audience.