• All KR Audio Products feature hand blown audio only tubes precision made in Prague, in the Czech Republic. These tubes are not old radio or microwave tubes being electrically stretched to an audio use.  They were designed to be sonically incredible from the start. All KR integrated amplifiers feature zero feedback designs for incredible sound.
  

• All KR Audio Tubes are made with a very hard Pyrex glass at very low pressures, so unlike traditional tubes with a 1000 hour rating, KR Audio Tubes have an estimated lifespan of 10000 hours.

• All KR Audio Tubes are warranted for a whole year of use.
  

• All KR Audio Tubes are the brain children of the late Dr. Riccardo Kron, who believed that when transistors entered the marketplace that tubes could be enhanced and redesigned further to provide sonic superiority and clarity over even the best modern day transistors. His tubes are at the heart of many ultra high end manufacturers designs worldwide.

• All KR Audio Tubes are hand built and hand inspected in very small batches, to ensure the utmost of quality and the best match.

• All KR Audio Tubes are numbered and the tube data logged, so that when a tube finally does fail, you can get a matched part without having to purchase a number of tubes and match them yourself. The KR Audio Chief Engineer, Mr. Gencev, although just a young man, studies each tube and makes process changes to account for all variations in materials.  You really can hear the sonic improvement brought about by using KR tubes.

• All KR Audio Products have US based technical support, so when something breaks, help is only an email or phone call away.

• No matter with whom you deal, if they are a KR distributor, a KR dealer, or a KR repair facility, you will deal with someone who is passionate about incredible audio, incredible looks, and forging a continued renaissance for home audio. When only the best will do, KR Audio Products are nothing short of world class in refinement, sound, and support.