| http://www.w3.org/ns/prov#value | - The CTP-1 is powered by 4 AA batteries, which will deliver approximately 24 hours of playing time. ??? The Cool Tube preamp introduced at the January 2004 NAMM show in Anaheim, California is the most significant development in on-board acoustic signal processing since Takamine presented the Acoustic DSP, the industry's first on-board digital acoustic guitar preamplifier in 1998.
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