5881

The JJ 5881 prototypes came to us in September of 2014 for testing. We were very excited to see the traditional stubby bottle and completely new internal construction. We had spoken to JJ about the need for a really great 5881 that was built to be a lower power 6L6 just like the originals and they sure came thru on this one!

One of the first amps we auditioned them in was a Blackface Twin. The very first words spoken to describe them was "Wow, its like Tweed in the bottle!" The power was noticeably down, the breakup was earlier and very smooth in transition. They have "jangle" for days! We LOVE these tubes! A wonderful option for any 6L6 amp. 

After a 24 hour burn in all power tubes are tested for noise and matched at multiple operating points for plate current (± one milliamp) and transconductance.