[adamaley]

For sale is my pair of KR242s. These have only been used in Lampozator DACs by myself and the former owner - never in an amplifier. As such, you can expect the legendary long life these are known to have to be intact.

If you have a Lampizator DAC and your system can handle the gain of these tubes, you are in for the time of your life.

These are ~ $865 brand new: https://shop.best300b.com/products/kr-242

I am asking $465 and buyer to pay PayPal fees and shipping fees to CONUS.

Tubes will come with original packaging and datasheet. See pics below and thanks for looking.

[ketcham]

That is a stellar price and Kron are among the best current production brands. I use them where I can. 

[sandmanct]

Can these be used where 300b tubes are used?

[adamaley]

They can be used in lieu of a 300B in some amplifiers depending on the adjust-ability of the heater. I would not recommend its use without consulting the manufacturer. These have been sold btw.