Which tubes? My amp can except El34, 6L6, KT88, an

Maxgain- agree with the benefits of taking the low bass out
of the main amp. My SF P1SE sound much better(cleaner/faster) without having to deal with the bass from 50 hz down.

I think the V5s are a true classic design that will hold their value(like the other Vandys). I hope Mr.Vandersteen
brings the Signature One/Reference Monitors to market, for those of us who have smaller rooms or want to roll their bass.

Mahalo for all the info.

Aloha & an early Mele Kalikimaka.

To answer some of the questions,

I am using the vandersteen 5 crossover.

I am currently using in each mono amp 6 Tesla el 34's they came with the amp along with 1 - 12AU7 and 1 - 12FQ7 .

So as I take it the 34's are better on mids and highs but cheap and the KT88 is good bass and good mids and highs but expensive 6550 is between the two including price?

I have been reading and finding out that the Mullard NOS 12AU7 is a worthy upgrade to the sound of your amp?

What does the 12fq7 tube do and why is it such an oddball?

I have also read that the new Svetlana KT88s are really good as well as the EL34's. Are the Svetlana type tube the ones to buy for new production?

One last question, the NOS output tubes worth all that extra money I have read that some of the new production sounds quite good?

Thanks for all the reply's, I look foward to hearing your answers.

Ras

I know the NOS guys will scream bloody murder, but I think that the current crop of Svetlanas and some of the Electro Harmonix tubes are they way to go. A dozen output tubes can be expensive, NOS output tubes are down right precious. El34's will end up costing as much as KT88 since you will chew them up twice as fast and still get 1/2 the power while doing it. I still say Svetlana 6550c's are the way to start for what I feel is the least flavoured sound of the lot,or if you like a more romantic (classic tube) sound get the KT's. Check out www.thetubestore.com, they have some good info on the site and they may be able to steer you the right direction. They have some NOS small input/driver tubes like 12AU7 but I didn't see that they had any 12fq7's at all. If you give them a call, they may have feedback from other users of your amp and what works best.(did you ask Quicksilver?) The guys at the tube store are great people to do business with and have fair prices. I got driver tubes from them that one of my old amps didn't get along with and the exchanged them for me, which I thought was great! If you really want exotic NOS talk to Andy at Vintage Tube Services. Have fun!