i'm the proud owner of a fantastic pair of Beard P100 Monoblocks and also a Beard P50 stereo power amp (a pair also favoured by KK) and i was recently fortunate to be offered a full set of input valves for all three power amps (big thanks to Richard Dorrian and his friend Tony who supplied valves).
imagine my suprise when Richard brought me the valves and i discovered that they were all Mullard Originals (i'm talking 16 valves here) and he would take no payment for them .
i was totally 'blown away' by the improvement that putting in new valves made to the sound of my amps and i realised just how old and tired the old valves were getting (it happens so gradually one doesn't seem to notice) just as a matter of interest they are ECC81s , ECC82s , and ECC83s .