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View Classified FOR SALE: KR Audio 300B tubes, Riccardo Kron Anniversary edition, MATCHED QUAD I have a virtually new matched quad of the famous KR Audio 300B DHT tubes, but these are the special Riccardo Kron Anniversary edition to commemorate the original founder Riccardo Kron. These tubes are definitely top notch construction. I am the first owner and were arrived in mid September 2023 as part of my Lampizator DAC, and I have used this quad for less than 20 hours and put them back in the box. With the import tax, they cost around $1200 US dollars a pair / $2400 for matched quad. Asking $950 per pair shipped or $1850 for matched quad. Prefer to keep this quad together but will consider selling as separate pairs. Here’s the specs from their website. KR AUDIO 300B RICCARDO KRON LIMITED SERIES Use of Zirconium - as the coating for the anodes Improved structure support in the least vibrating glass points with double mica Ceramic bases Gold plated base pins Triple thickness glass Doubled cooling radiation surface for anode cooling Barium heaters that run colder and have better emission Closer tolerance matching 9th degree of vacuum for extended longevity Precise matching of the real original 300B specs and layout. KR Audio warranty on their tubes: https://www.kraudiousa.com/pdfs/13___KR_AUDIO_VACUUM_TUBE_WARRANTY.pdf Seller keithc Date 12/06/23 Price 950.00 USD Category Accessories
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