Unison Research PRELUDIO Class A Integrated Stereo Tube Amplifier nuprime amplifier 360-degree soundstage that remains consistent

360-degree soundstage that remains consistent across a wide range of listening positions and angles

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40RDT Special Edition in Buffalo

MXN10 next to a vintage Cambridge Audio amplifier and a turntable

Unison Research PRELUDIO Class A Integrated Stereo Tube Amplifier nuprime amplifier 360-degree soundstage that remains consistentUnison Research PRELUDIO Class A Integrated Stereo Tube Amplifier at Vinyl Sound Buffalo, NY USA The PRELUDIO is a Class A single ended integrated valve amplifier from Unison Research (Treviso, Italy), available at Vinyl Sound in Buffalo, NY, USA. Sharing its visual and architectural DNA with the higher tier Sinfonia and Performance amplifiers while offering an accessible entry point into the Unison Research classic line, the PRELUDIO produces 14