Thanks for the recommendation. Will look for those but initial searches dont yield anything. Regarding the glass, the biggest improvement I had was the soundstage and details. It all depends on tubes too. I only have stock and RCA 5692 tubes yet, and Im waiting to receive a few pairs. This also confirms that the LC is no slouch and punches above its price. I also use the LG as preamp into my A21 power amp to HE6, which has shown good improvement over the Parasound preamp I have. Im still gutted that I passed up on a very good Liquid Gold deal a little while ago. One of those deals that you always feel you should have jumped on. Ive only heard good things about it and wish to hear it some day.