JJ Electronic has released three new tubes – the 6550,
6CA7, and EL844. The company says the JJ 6550 is designed to improve the sound of high-powered amps. The 6CA7 is a large-bottle version of the EL34 that gives bigger, warmer sound. The EL844 is a substitute for any EL84, with lower gain
and a more balanced, dynamic sound. For more, go to cedist.com.