[bikecrazy001]

hi all ive got a yaqin 5881a amplifier running a pair of Dynaudio DM27`s . The amps got Chinese 5881 power tubes and 6n1 preamp tubes in it as stock . I was wondering if any of you know which power and or preamp tubes would be an improvement over stock ? The amp sounds really good but a bit too bright sometimes. Ive got a choice of. tung sol 6l6 gc , electroharmonix 6l6 gc , jj 6l6 gc , or sed winged c 6l6gc thanks