Pierg, this is weird, you right to contact your vendor, if i would be you i would ask to exchange the amp (fixing takes longer and results not always best). i see no point in keeping faulty new equipment unless this is dirt cheap and not worth your postal charges.
yep, my BH gladly is dead silent, no hiss no noise... perhaps i was lucky.
@Kova - man, why you do not send your amp back for exchanging is beyond my understanding. i would not bother with any product which does not work as advertised. i also believe Pollychen will gladly assist you on this. i remember purhcasing some good relatively expensive valves for my amplifier from Hong Kong ... two sets were malfunction and i sent them back at no cost and got new sets. i find HK merchants very kind and great to deal with, they can be very helpful. i was always happy with treatment from them.
Edited by Gintaras - 3/7/13 at 5:14am