No More upgrades to ARC LS25 Mk.1?

I would keep your Mk1 to tame the tweeter, buy a JL Audio Fathom Sub F113/F112 since your 802's don't do 20hz bass anyway...) and dial in the bass, speaker placement and finally some room treatment(which will make a bigger difference than the more transparent Mk2)... oh yeah are you using balanced cables since your threshold is fully balanced? and do you have dedicated 20amp circuits to feed the threshold's!

Once again what do you want to improve about your system???? what do you not like?

You can buy a Mk2 and if you don't like it turn it for what you paid or a little less.... otherwise if you like the ARC sound, get an LS26

hang onto your mk 1 and tube roll it with some killer e188cc..

I would keep the Mk I and have some fun tube rolling as Mykesinger suggest, maybe even send it to Steve. If you must have the 6H30 tube, I'd skip the Mk II and go straight for the LS 26. However, remember, you can't tube roll with the 6H30.

If it were me, I'd talk to Steve Huntley and see what he recommends. I'd either upgrade the Mk I through GNSC, or get a LS 26. The LS 25 Mk II would not even be a consideration for me.

Cheers,
John

Thanks all.

Yeah, the LS26 would be ideal for the 6H30.

Might as well stick with the Mk.1 and try some better tubes. And particular recommendations?

6H23 NOS Russian Military tubes. Affordable and sound very good. Better all around than EH or Sovtek. Smoother top, more natural, better soundstage.

I use Mullard made by Amperex in Holland NOS 6922. Very nice sound. They're not as expensive as some other NOS tubes. Got them from Brent Jessee Recording Supplies.

There is so much information on tubes, it can be confusing. Essentially, tubes are like cables. You have to try in your own rig. If they work good in someone's system, this is no indication they will work for you. So buy an try. This is the best way.