EL 34s for Cayin A 50T Integrated Amp


I am thinking of changing out the stock tubes (The EL34s) in my Cayin tube amplifier, but don't know what brands to look for. I mainly play rock and I am looking to improve my base and possibly the level of detail as well. Does anybody have any suggestions?

Thanks for your help!
marntz4me
I don't have your amp so take this for what it is worthbut if the SED El34s are like their KT88s I'd strongly recommend them. If Imay something else you might want to consider is getting some NOS tubes for the front end. Again my amp uses diffferent tubes than yours but I recently got some Tung-sols (6sn7, 6sl7) , anamazing difference in themusic you hear. Just some thoughts, good luck
I saw a quad of the EL34 sveltlana's on ebay. They were about $59? One last question, does anybody no about EL34 Mullards? They are selling them on Ebay too.
I'm happy with the EH 6CA7s. They replaced the EH EL34s which is quite good too.