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From DECEMBER 30, 2018 to JANUARY 8, 2019 we will be CLOSED and out of the office with limited access to email and will re-open JANUARY 8, 2019. You may purchase while we are closed, but keep in mind that all Shipping will be on JANUARY 8, 2019.

FREE SHIPPING within the USA on SELECT ITEMS!

On SELECT DOMESTIC orders of $99 or more within the USA ... Simply look for the "FreeShipping" logo to enjoy free shipping on selected items throughout the store. You pay no domestic shipping if the items in your order qualify for 'Free Domestic Shipping'!




NOS 1950's SYLVANIA 6SN7 GTA black-plate CHROME TOP MATCHED PAIR NOS PHILIPS 6550 / KT-88 matched QUAD MADE IN U.S.A.
$299.95
$249.95
$249.95
You save $50.00!
$1,499.95
$1,099.95
$1,099.95
You save $400.00!
NOS 1950's SYLVANIA 6SN7 GTA black-plate CHROME TOP MATCHED PAIR NOS PHILIPS 6550 / KT-88 matched QUAD MADE IN U.S.A.
NOS 6SN7-GTA 1950'S LOW-NOISE BLACK PLATE PAIR with "D" Getters NOS 1970's PHILIPS-ECG BRANDED TUNG-SOL 6550A / KT-88 matched QUAD MADE IN U.S.A.

PHILIPS ECG Tung-Sol 6550, plate with 3 holes version (PRECEDED by the plates without holes version).

O
nly Tung-Sol made ST shaped 6550, and sold to other manufacturers and merchants with a black plastic base under the metal, who rebranded (most common: RCA, GE, SERVICE-MASTER, AND PHILIPS ECG).

Appears to be v
ery late 1970's production TUNG-SOL 6550 made just prior to TUNG-SOL closing down their Newark, NJ plant, they do have PHILIPS ECG branding on the quad.

NEW NEVER USED - GREAT TEST MEASUREMENTS

SUPERIOR METAL BASE POWER TUBES

THREE (3) GETTER RINGS FOR SUPERIOR PERFORMANCE


CLEAR, SOLID, LONG-LIFE POWER TUBES

LASTS 4 to 5 times longer than Russian or Chinese KT-88's

MATCHED QUAD:

TESTED AT FULL 500 VOLTS on the AMPLITREX AT-1000 TUBE TEST SYSTEM.

58.2mA (104%) 6,950 GM (107%)
58.1mA (104%) 6,900 GM (107%)
58.0mA (104%) 6,800 GM (106%)
58.0mA (104%) 6,800 GM (106%)

LIQUID midrange, SOLID bass, MADE IN USA, AMERICAís BEST 6550A second to no USA made tube, superior to Svetlana or Sovtek 6550.


- ARC VT60, ARC VT100 MarkII and MarkIII, Ref. 300, Ref. 600

- Audio Research Reference 3 line-stage power supply

- Luxman

- Rogue

- Cary

- VTL MB300, MB450, ST-150

- CJ Premier 8 and 11A, 12

- Jadis

- Ampeg SVT

- Comins Alessandro Jazz Guitar Amp

- Cary SLI-80

- Octave V40SE


- THD

- VAC PA100/100

- McIntosh 275 MK IV 2005

- Harmon Kardon

- Audio Aero Capitole Integrated amp
EL34 6CA7 MULLARD BRUXELLES BROWN BASE MATCH PAIR TUBES DOUBLE D GETTER HALO 1950 NOS Vintage Mullard EZ81 = 6CA4 = U709 Full-Wave Rectifier 1962-63 D-Getter
$500.00
$365.00
$365.00
You save $135.00!
$175.00
$119.95
$119.95
You save $55.05!
EL34 6CA7 MULLARD BRUXELLES BROWN BASE MATCH PAIR TUBES DOUBLE D GETTER HALO 1950 NOS Vintage Mullard EZ81 = 6CA4 = U709 Full-Wave Rectifier 1962-63 D-Getter
EL34 6CA7 BROWN BASE MULLARD-LABEL M.B.L.E., Bruxelles PAIR TUBES DOUBLE D GETTER HALO 1950 NOS Vintage Mullard EZ81 = 6CA4 = U709 Full-Wave Rectifier 1962-63 D-Getter
PRIVATE-STOCK Telefunken ECC82 12AU7 low-noise perfect pair 1960's BERLIN SMOOTH-PLATES E182CC / CV2293 / 7119 Dual Triode Made in Holland Matched Pair 1961-62
$598.00
$450.00
$450.00
You save $148.00!
$340.00
$265.00
$265.00
You save $75.00!
PRIVATE-STOCK Telefunken ECC82 12AU7 low-noise perfect pair 1960's BERLIN SMOOTH-PLATES E182CC / CV2293 / 7119 Dual Triode Made in Holland Matched Pair 1961-62
NOS PRIVATE-STOCK Telefunken ECC82 12AU7 low-noise perfect pair 1962 BERLIN E182CC / CV2293 / 7119 Dual Triode Made in Holland Matched Pair



Today's Super Deal!

NOS TELEFUNKEN 6AK5 5654 6AK5W < > Tube

$70.00
$39.95
$39.95
You save $30.05!
NOS TELEFUNKEN 6AK5 5654 6AK5W < >Tubes for Little Dot headphone amp MK IV 3 4 +
NOS TELEFUNKEN 6AK5 5654 6AK5W < >Tubes for Little Dot headphone amp MK IV 3 4 +


Top Sellers

SIEMENS ECF802 for McIntosh 6U8 6GH8 6EA8 MR67 MX110
$35.00
NOS NIB TELEFUNKEN 6CS6
$44.00


New Products

6GH8A AMPEREX La Radiotechnique France
$65.00
Telefunken ECC82 12AU7 low-noise perfect pair
5Y3GT 1950 BLACK-PLATE Clear-Top with "D" getter
$65.00
SYLVANIA NOS 6SN7-GTB Perfect Platinum Matched PR
RAYTHEON 6SN7 GT MATCHED PAIR NOS tall bottle
$139.95