Excellent ECC81's made by Blackburn factory of Mullard. These tubes, having plates with 3 side holes typical to the classic Mullard ECC81's of early days are mostly from 1960's and early 70's. A part of the stock is labeled and boxed for Philips. NOS and MINT!
Quantity in Stock : 5 pcs
Price : Grade A @ US$39,00/ea ; US$83,00/matched pair
Grade B @ US$35,00/ea ; US$75,00/matched pair
Grade A - The best in the stock. Lowest noise and microphony with the tightest balanced sections we have available. This is typically 10% or often tighter given the large volumes of our stock.
Grade B - Low noise and microphonics with a section balance typically between 15% and 20%, but may be higher depending on available stock.
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