More bass from Cary SLI 80. Tube changes?

What can I do to increase / refine the bass output from my Cary SLI 80? Tube changes perhaps? Which tubes would be the best to increase bass?

sth053570e105-22-2003 3:08pm

steuspeed Details Discussions Posts This discussion Message User 501 posts 05-22-2003 at 08:30pm Copy Comment URL Report Comment Edit Delete Talk to Andy at: www.vintagetubeservices.com Re-tubing my preamp was the best performance/dollar I have spent on my system. I bought NOS telefunken and RCA tubes from Andy. After 2-4 weeks break-in I never looked back. Stewart