The introduction to the SBS Designs SP-1 Tube Warming device
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01-04-2013, 12:23 AM
Join Date: Jul 2012
Location: Auckland, New Zealand.
do you have to use any tube in particular or can you swap out the shipped tubes for some classic 12au7's?
a silly question, but what happens if a tube blows during a set?
Last edited by 1620_nz : 01-04-2013 at
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