What's my next step in AC conditioning??

These are the steps to doing this:

1) Power delivery
2) Cleaning of power
3) Preventing cross contamination
4) Not ruining the music in the process.

You have made a substantial discovery: the benefit of a dedicated line. Cross contamination from outside sources and power delivery improve. Now you need to do steps 2, 3 & 4. Step 1 is finished off by getting a Porter Port. Lak says it's the best outlet he's tried--and believe me, I've been to his house several times. He's got every outlet out there and a set up consisting of six dedicated lines.

I would get one or two smaller ONEAC (2-3 amps)isolation transformers from eBay ($15-30)and plug them into the Monster to isolate digital and analog. The Monster has two separate filtration circuits, so I'd use one for digital. Adding a small ONEAC for the digital will surprise you as it outperforms filters costing hundreds of dollars.

Search the archives, as this is extremely application specific. No set route, no set products.

Physicanimal:
Thanks for your response.
1. How do I locate the 2 circuits on the Monster; there are 12 outlets on it. CD, video, amplifier, aux., etc.
2. Will 2-3 amps be enough for my CJ tube amp? (I see a 1 amp ONEAC transformer on ebay.) Is that enough?
Thanks.
Uri

Uri:
Basically the side labeled for DVD and CD player on the HTS has the most filtering. The other side has much less i.e. where the AMP labeled outlet is and provides for more power hungry applications like AMP.
Based on your comments by all means invest in two dedicated lines, cost for labor will be almost equal than doing just one. As you noticed the less other things plugged in your system's line the better results you get. For quite a while I had my digital source, preamp, amp, TV set, cable signal , VHS in the HTS. I tweaked my system and found a testing track like track #23 in Chesky's "Ultimate Demo disk" and listened to how detailed and better presence the organ sounded and also how better or worse the different part of the chorus were portraited. This led me to just leave in the HTS what I really need for music reproduction, in other words even just having other things plugged there and not "on" had some effect. In your case I'd suggest trying without the Scott and deck and see what happens.
Power cords have also helped me a lot, I even changed the stock in the HTS..... not easy but doable Your comments please
Luis

Uri: the Monster has a schematic diagram on the underside. It has two filter circuits, each using two inductors in parallel. The power amp is best plugged directly in the wall using a cryo'ed outlet. Later you might want to try something beefier, but for now let's keep things simple, in balance and within a reasonable budget.

Here's a review from someone that followed my suggestions:

Power conditioning and cryo treating

I am not a huge fan of multiple dedicated lines, as that can bring ground loop issues. My system runs on just one 30 amp, 220V dedicated line and I use step down isolation transformers. It works.

Good post. I recently moved most of my components to an area where I need to run a new circuit. This post reminded me to contact Albert and get some of his Porter Ports. He directed me to his listing here on Audiogon. Check is in the mail.