Why do different brands of tubes of the same type sound different?
A. Each manufacturer may use slightly different internal materials when constructing the tube. This is because there is no industry standard for internal materials. The only standards apply to fairly broad electrical specifications. At conrad-johnson we spend countless hours evaluating various vacuum tubes for each product. The tubes are selected based on sound quality and reliability. We know of no currently available tubes that are reliable and will improve the sound quality of your conrad-johnson component. All tubes that we supply are then tested in circuit for performance to our specifications. For consistent results, we recommend that you purchase tubes supplied by conrad-johnson.
