Please call USA Tube Audio
USA TUBE AUDIO
8355 E Butherus Drive Suite 1
Scottsdale, Arizona 85260
KR is the world leader in the production of low-frequency power triodes and hi-end audio equipment.
All products are hand-crafted, starting from the selection of the glass.
The high vacuum machines and the choice of the artisan work in both metal, glass blowing and design, chemical and electrical designs plus the absolute refusal to use an automatic line to make tubes is THE reason for KR unique high quality.