Re-tubing my ARC reference 1 preamp


Hi Everyone,
I need some advice , I will be re-tubing my ARC ref 1. I have the Sovtek type tubes in the unit, I find them a bit harsh up top and I am not to crazy about the
bass. I need something warmer and sweet with great bass?
Any advise ?
slates
Slates, I think you have a good starting point. The 6H23s are only $15, so you can try and decide.
A friend of mine is going to let me borrow his Mullard 6922 Gold pin,
he says if like them he will sell them to me.
You will get warmth with those Mullards. Good sources for NOS in my experience have been Brent Jesse and Vintage Tube Services. Hardes part is getting closely matched and balanced pairs, but these guys seems to do a good job.
Has anyone ever dealt with "VINTAGE TUBE SERVICES" if so, what is your experience with Andy?