If you love the sound of your CJ, stick with the same tubes. CJ isn't cheap but, they are consistent. Many new and NOS tubes are great but will definitely change the sound. Using substitute (7308) will change the sound also.
Good Luck
Good Luck
NOS Tubes inferior?
Recently new to tubes I am looking down the road to replace the tubes in my cj ls17. I was advised to look at NOS tubes vs. ordering a new set from conrad-johnson. Another friend suggested that tubes made today employ better technology and therefore are better than NOS; furthermore he stated that since glass is not 100 percent impermeable old tubes have lost some 'vacuum'. Any thoughts on this argument? Are NOS the way to go and are they worth the cost?