Vox, Marshall Reverb Tank, REVB00004, 4DB2C1D, for the AC15TB, AC15TBX, JCM600H, JCM600, JCM602

Type4, Input 250ohm, Output 2250ohm, Medium Delay, Input Insulated / Output Grounded, No Lock,
Vertical, Connectors Down.

SAME AS C5B74006A