Current filter
Single tube, not matched A new geometry is utilized to reduce odd order harmonics for a sweet top end while the peak power is extended to improve low frequency response. Our new glass formula body ensures long life and improved reliability. The perfect choice when the authentic sound is needed.
2 tubes, matched as pair This beam power tetrode can be used in place of 6550 and KT88. Sounds like great big EL34.
4 tubes, matched as quad This beam power tetrode can be used in place of 6550 and KT88. Sounds like great big EL34.
Single tube, not matched This beam power tetrode can be used in place of 6550 and KT88. Sounds like great big EL34.
{{.}}
{{{.}}}
