A pair of very well matched pair of PX4. These are warm sounding mesh plate tubes.
Tubes are curve-tracing tested which can reveal problems usually hidden in other tests.
TJ Fullmusic mesh plate tubes have proved to be very stable and this pair has very good curves, therefore, we expect this pair of PX4 will last very long.
Test reports: https://1drv.ms/u/s!AuIuL2tSohTCi9gW2tlwOSU1rVuSJw?e=kvftUD
We usually replace returned tubes from our own inventory. However, our inventory of PX4 is low. If we run out of stock, the replacement will come from the manufacturer which may take 2-3 months.
We have been providing 12 months warranty on TJ Fullmusic tubes for decades and we want to continue to provide the same warranty. However, since TJ Fullmusic stopped manufacturing this model, therefore, their remaining stock will be cleared eventually. When that happens they may replace defective PX4 with other tubes of the equivalent value.
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