Made by Tung-Sol around 1950's and early 60's. The best 5881 ever made! A large stock is available. Some tubes are labeled and boxed for National Electronics and RCA.
Quantity in Stock : 46 pcs
Price : US$ 80.00/each ; US$ 170.00/matched pair
TUNG-SOL 6L6WGB / 5881 USA
Made by Tung-Sol around 1950's and early 60's. The best 5881 ever made! A large stock is available. Some tubes are labeled and boxed for National Electronics and RCA.
Quantity in Stock : 46 pcs
Price : US$ 80.00/each ; US$ 170.00/matched pair
CBS - HYTRON 12AX7 Long Plates
Made by CBS in early 1960's. These rare tubes have long 17mm gray plates and halo getter. Here is a thread reviewing this tube : https://www.audioasylum.com/audio/tubes/messages/17/175982.html
All of these come screened for noise and microphonics.
Quantity in Stock : 20 pcs
Price : US$ 65.00/each ; US$ 135.00/matched pair
Marconi Osram Valve MOV CV133 / 6C4 Welded Black Plate
The 6C4 is a miniature, medium-mu triode approximately similar to one section of 12AU7. It is useful as a local oscillator in high frequency circuits and as a power amp in RF circuits. It is a common tube in Conrad Johnson and some Heathkit amps. These ultra rare MOV tubes have welded black plate and D-getter.
Quantity in Stock : 8 pcs
Price : US$ 28.00/each ; US$ 59.00/matched pair
Marconi Osram Valve MOV CV133 / 6C4 Black Plate
The 6C4 is a miniature, medium-mu triode approximately similar to one section of 12AU7. It is useful as a local oscillator in high frequency circuits and as a power amp in RF circuits. It is a common tube in Conrad Johnson and some Heathkit amps. These rare MOV tubes have charcoal black plate and D-getter.
Quantity in Stock : 8 pcs
Price : US$ 18.00/each ; US$ 39.00/matched pair
TELEFUNKEN CV133 / 6C4
The 6C4 is a miniature, medium-mu triode approximately similar to one section of 12AU7. It is useful as a local oscillator in high frequency circuits and as a power amp in RF circuits. It is a common tube in Conrad Johnson and some Heathkit amps. These Telefunken tubes have Philips/Amperex style plate but have no diamond mark on the bottom.
Quantity in Stock : 10 pcs
Price : US$ 13.00/each ; US$ 29.00/matched pair
Mullard CV133 / CV4058 / 6100 Box Plate Whyteleafe
The 6C4 is a miniature, medium-mu triode approximately similar to one section of 12AU7. It is useful as a local oscillator in high frequency circuits and as a power amp in RF circuits. It is a common tube in Conrad Johnson and some Heathkit amps. These box plate tubes are labeled for Valvo and from the Whyteleafe factory of Mullard, Gt. Britain.
Quantity in Stock : 10 pcs
Price : US$ 13.00/each ; US$ 29.00/matched pair
Mullard CV4058 / M8080 / 6100 Box Plate Mitcham
The 6C4 is a miniature, medium-mu triode approximately similar to one section of 12AU7. It is useful as a local oscillator in high frequency circuits and as a power amp in RF circuits. It is a common tube in Conrad Johnson and some Heathkit amps. These box plate tubes are from the Mitcham factory of Mullard, Gt. Britain.
Quantity in Stock : 38 pcs
Price : US$ 13.00/each ; US$ 29.00/matched pair
VALVO ECC81 / 12AT7 Hamburg
Made by Hamburg factory of Valvo amid 1960's. All have the "D" factory - date codes. Great build quality with steel pins and O-getter. These have large amount of refined clean detail, natural/beautiful timbre, impressive open air at the top and amazing sound stage. The favorite ECC81 type of most of the audiophiles.
Quantity in Stock : 12 pcs
Price : US$ 75.00/each ; US$ 155.00/matched pair
VALVO 6201 / E81CC / 12AT7WA Hamburg
Made by Hamburg factory of Valvo amid 1960's. Most of these have the same factory (D) - date codes. Great build quality with gold pins and solid disc getter. These have large amount of refined clean detail, natural/beautiful timbre, impressive open air at the top and amazing sound stage. The favorite ECC81 type of most of the audiophiles.
Quantity in Stock : 22 pcs
Price : US$ 110.00/each ; US$ 225.00/matched pair
Mullard E88CC Wrinkled Glass
Made by Mitcham factory of Mullard in early 1960's. These are rare wrinkled glass tubes specific to the early Mitcham productions. This is the tube for collectors and those who are after for a truly vintage sound. The limited extension of high frequencies make this tube sound extremely warm, and add heavy weight with great bass. Highly recommended for bright sounding systems.
Quantity in Stock : 8 pcs
Price : US$ 170.00/each ; US$ 350.00/matched pair
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