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Phone: 303-766-4504 Product and general questions: [email protected] • Technical questions: [email protected] Telephone support available Mon-Fri, 9am to 5pm Mountain Standard Time
Attention International Customers: Butler Audio Inc is not responsible for Customs charges, delays due to general delivery and/or Customs clearance issues. Prices are FOB Denver, Colorado, USA.
TubeDriver, TubeDriver BLUE, Thermionic, MosValve, Butler Audio, Blue Tube,
blue tube illumination, appearance and method are trademarks of BK Butler.
Use of these trademarks is by permission only and is strictly enforced.