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About the UV1
The Atma-Sphere UV-1 (UltraViolet) is a cost-effective entry-level tube preamplifier developed over decades by Ralph Karsten, originally refined from Dynaco PAS-3 modifications. It uses a simple zero-feedback design with 6SN7GT tubes for the linestage and 12AT7 for phono sections. Available in configurations: basic line stage, headphone amp/line stage, full function with high-output MM phono, or low-output MC phono using Jensen step-up transformers. Features Cardas RCA connectors, shunt-style balance control, heavy-duty aluminum chassis, precision components, low-noise grounding, and standard dual outputs (optionally reconfigurable as tape-out). Praised for natural, open sound, excellent bass control, and value, outperforming pricier competitors in reviews.
Specifications
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