Mesa Big Block 750 hiss

[starvingbassist]

I am guessing it is the pre-amp tubes because when they are warming i get a weird crackle and little bit of a whine, my question, before i go out and buy new tubes would be, is this common for this amp other than the tube factor. I am upgrading to an Aguilar DB 750 and putting the Mesa up for sale but can't, in good nature, sell this amp with all the noize it makes. i know how exciting it is to get a new amp and i would be pissed to pay for a crappy one.

I am running into two SWR Goliath 3 4x10's with a expensive Furman power conditioner so it can't be grounding problems other than internally, but the hissing is just so damn loud and annoying.

 

[SMASH]

I think you've got a bad tube.

Have you played the DB750 before? I'm wondering why you call it an "upgrade" to the Big Block.

 

[starvingbassist]

The big block isn't giving me the tone i want all in all. it's sad because i really like the amp, really close too, it's just that i get a really awesome tone with DB 750. i played it for an hour last week and have been completely obsessed ever since. i want to keep my mesa but i can't afford too. definately buy another mesa amp in the future, probably the 400+

thanks for the info, i will change them out tomorrow, hopefully that is it, usually mesa's are really dependable