Tube Rolling - No Change in Sound


In my Wyetech Opal pre, I substituted NOS Ken Rad VT231's for JAN Philips WGTA's in the input stage, expecting more body and warmth to sound based on Ken Rad reputation. But nothing has happened; I perceive no audible difference from the switch in tubes! What's up with this? This was my first foray into tube rolling.

Neal
nglazer

Showing 1 response by sbank

For once, a thread where everybody is right!

FWIW, I have been able to get pretty significant changes in my rig's sound by rolling 6dj8's in a number of different preamps in driver and output stages. The Kenrads definitely added some of the "fat tone" flavor vs. other tubes, especially in an Atma-Sphere MP3, which is relatively good at allowing you to hear the differences in various tubes. Cheers,
Spencer