Sovtek 6550WE – From Russia with love. If you have an Audio Research amp, this is the tube you want. They have a little bump in the midrange, tight bass, good top end extension. Tubes test NOS on tv7 and are gm matched.
Sovtek 6550WE – From Russia with love. If you have an Audio Research amp, this is the tube you want. They have a little bump in the midrange, tight bass, good top end extension. Tubes test NOS on tv7 and are gm matched.