Premium 5751/12AX7 with 2 mica spacers and 2 support rods to ensure low microphonics. One of the best ever made 5751 tubes. Low noise, good texture. Great for guitar and phono... These are military spec tubes coming in original boxes. A few singles labeled for National and Heintz & Kaufman are also available.
PHILIPS Miniwatt E83F Early 1950s & Haltron/Tungsram E83F
A pentode made for Telephone Services by Heerlen/Holland factory (Delta code) of Philips in the early 1950s. Only two pieces of these are available. The third tube in the picture is a Tungsram with rhodium pins relabeled for Haltron/England.
Special Quality pentode made for Telephone Services by Heerlen/Holland factory (Delta code) of Philips in early 1960s. These beautiful tubes have gold pins and a life expectancy in excess of 10,000 hours. Labeled as Philips SQ (Special Quality), Mullard and Siemens.
Probably the most sought-after audiophile 12AX7 ever made. These have long smooth plates and diamond mark in the bottom. Their production date to the 1960s and early 70s. All of these are in original boxes in pristine condition. Screened for low noise and microphonics!
Telefunken EF804 tubes were made for the professional audio/recording industry where these were used in microphones and mic preamps. These tubes, having diamond (< >) in the bottom, are Ulm factory production. Most of the tubes in stock were relabeled and boxed for CEI/USA.
Quantity in Stock : 22 pcs Price : US$ 49.00/each (Add $5,00 for matching)