Mullard ECC88 tubes NIB/NOS

Mullard ECC88 Matched pair, NIB/NOS, tested but never used, made in Great Britain, Yellow writing, no test data as I misplaced it long ago. Recently tested working in Audio Innovations amplifier (driver tubes). Sold

Mullard ECC88 single tube, NIB/NOS, tested but never used, Made in Holland, White writing, no test data as I misplaced it long ago. RM120, firm.



Bought these in the 90's as upgrade for my tube amplifier. After I tried it I found that the driver tubes (my amp at that time used ECC83 as pre-amp, ECC88 as driver and EL34 power tubes) does not make much difference to the sound.  Never used these as I later bought original ECC88 tubes from the factory. Tested recently working in my brother's Audio Innovations amplifier. The seller claimed at that time that they were NOS, I tried them a few times in my amplifier, but never used them for any length of time. Maybe used 10 hours over use in total.

Price including shipping in within Malaysia.
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