1 pair) CV378=GZ37 Mullard UK “”D”” getter NOS 1955 no printing

1 tube) 56/40 and 56/40

1 tube) 57/40 and 57/40 taller bottle – on right

Test results on TV-7D/U

Recommended for

– SET amps
– Allnic H-3000 phono
– Allnic 300B SET
– Art Audio 300B amp
– Art Audio PX25 amp