Best Tweak???

I'll go with the CD-Rs on computer with Exact Audio software you will even get CD Text. Good quality disc are important. Fuji has changed suppiers but you can still find the ones that are made in Japan, they are High Definition Burn Certified and are made by a company called Taiyo Yuden which is a leader in this industry. If you can't find the older Fuji's no problem it seems Maxell has also changed suppiers and are now made in Japan by (Yea you guessed it) Taiyo Yuden and are HD Certified. Just make sure it says Made in Japan. NOT TAIWAN! You won't find anything with the disc that says it is HD Cert. but i have software that will read them. There are a few other good ones. I could post later if anyone interested.

Can't say yet if this is the best tweak ever, but I found a great way to trap the bass & reduce the high frequency echo of the room. I placed a 36" in length OPTP physical therapy roller in the most offensive corner, and it's amazing how much more of the music (and less of the room) I'm hearing. I can't say if it's the 'correct' thickness of a trap, but it works really well. I'm going to get some of the semi-circle types and cut them in half, so they will fit into the corners. They are less than $20 apiece, depending upon the size you buy.

Howard

What is, and where do you get:

OPTP physical therapy roller

Drrdiamond:
http://www.optp.com/shop.cfm?groupid=Foam%20Roller%20Therapy&catid=Foam%20Rollers

I posted before, and I stand to correct myself. Experience begets experience.

Best tweak: dedicated AC. Optimize w/ a good outlet (how good? i'll let you know once i test).

The twisted pair 12*3 romex i put in (w/ audiophile approved outlets) has made a dramatic change in my system: low level details emerge that i never knew existed. bass is significantly tighter, deeper, and images. black backgrounds. and most of all: PRAT...which conditioners are oft to suppress---this is a revelation for my system, of which a 50wpc SET into WP6s is the heart: the percussives have impact that i never thought a SET could deliver (no doubt the transparent speaker cables also influence this parameter).

this was a wonderful improvement and i regret i never did it sooner.