Item: Tubes 6SN7 / 1578 Russian from Melz factory - Matched Location: Sydney Price: $225 /pair inc postage (new price would be over $400) Item Condition: Excellent with less than 200 hours. I bought them NOS. Reason for selling: Rolling Payment Method: Pickup - Cash, Paypal, Bank Transfer
These 1578 are considered to be as good as you can get in a 6SN7 or equivalent. Nothing beats them.
Clean, crystal clear, dynamic! Very rare now.
These are the ones with the holes and metal base - see pics.