Tubes

Tung-Sol KT150 Quad matched set

Up for sale is a quad matched set of KT150 power tubes. These have less than 70 hours on them. I had them installed in an Audio Research Ref75 amp. They were used for less than 1 month before I sold the amp. They were purchased from Viva-tubes in 12/202, installed in the amp in 1/2022 and t...

Up for sale is a quad matched set of KT150 power tubes. These have less than ...

$400.00

New Issue Western Electric 300B Matched Pair *3-Day Au...

At Reference Components Ltd, we are constantly testing different components, mixing & matching, etc. We recently did in-house testing of several 300B amplifiers before returning them to the manufacturers. For testing, we purchased a matched pair of Western Electric new-issue 30...

At Reference Components Ltd, we are constantly testing different component...

$799.00

Takatsuki TA-300B Vacuum Tubes (matched pair)

Takatsuki TA−300B Ultimate Valves for Audio Unprecedented High-Precision Vacuum Tubes reincarnated by Japanese Semiconductor Manufacturer. ...

Takatsuki TA−300B

$1,690.00

Sylvania 6SN7 GT Bad Boy 3 holes plate Matching pair

On sale is one used matching pair of Sylvania 6SN7GT electronic tubes. First tube dated 305 and second tube dated 309. These three holes plate Bad Boy are one of the best in the 6SN7 family. Tubes are just tested, readings are 96/102 and 104/94 out of 100/100 and also sound tested without any iss...

On sale is one used matching pair of Sylvania 6SN7GT electronic tubes. First ...

$300.00

Ken-Rad VT-231 electronic tube

On sale is one matching pair of Ken-Rad VT231 electronic tubes. These used vintage military grade tubes were made in the year 40’s. Both tubes are coded J3 on their bases. Tubes are just tested by a TV-2C/U tube tester, readings are 98/104 and 98/94 out of 100/100, also sound teste...

On sale is one matching pair of Ken-Rad VT231 electronic tubes. These used...

$300.00

Amperex 6922 PQ Pinched waist Matching pair

On sale is one matching pair of used Amperex 6922 premium quality Pinched Waist vacuum tube. Tubes were made with gold plated pins and curve D getters. Both tubes are coded 905 and dated 930. Factory codes are 7L4 ★8l. These tubes are one of the very best in the E88CC / 6922 famil...

On sale is one matching pair of used Amperex 6922 premium quality&...

$690.00

Ken-Rad 2A3 MR electronic tubes Matching pair

On sale is one matching pair of Ken Rad 2A3 MR electronic tubes. These used vintage tubes were made in the year 1940's. Tubes are just tested by a TV-3B/U military tube tester, readings are 4100 and 4100 out of minimum 1900 and also sounded without any issue. Tube rating is...

On sale is one matching pair of Ken Rad 2A3 MR electronic tubes. These used v...

$440.00

Ultra-Rare TAKATSUKI TA-274B Rectifier Tube: Premium G...

Ultra-Rare TAKATSUKI TA-274B Rectifier Tube: Premium Gift Box; NEW-in-BOX; 33% Off TSUKI-83944 MSRP: $1649.95 USD/Each pcX Price: $1099.95 USD/Each 33% Off Retail Takatsuki Electric released the TA-300B in 2010 after a 3...

Ultra-Rare TAKATSUKI TA-274B Rectifier Tube: Premium Gift Box; NEW-in-...

$1,099.95

Psvane CV 181 T II / 6SN7

In hand - 4 MATCHED PSVANE CV-181 T MKII Classic Grade (6SN7) tubes. These re the tubes you want if you have a Schiit Freya+ fantastic soundstage. Sold my a pre-amplifier and now have no need for them.. Current market is about $400; I paid $285 & will let th...

In hand - 4 MATCHED PSVANE CV-181 T MKII Classic Grade (6SN7) tubes.<...

$230.00

Western Electric 300B

On selling one pair of 300B power tube ( as the internal structures are same with Western Electric ) but its unmarketable WE wording Worldwide Shipping .

On selling one pair of 300B power tube ( as the internal structures are same ...

$850.00

Electro Harmonix KT88

New in original box, price is for a single tube. Shipping is $6 each. Bought them as spares and never used it.

New in original box, price is for a single tube. Shipping is $6 each. Bought ...

$50.00

Takatsuki TA−274B Rectifier Tube

Takatsuki TA−274B Ultimate Valves for Audio Unprecedented High-Precision Vacuum Tubes reincarnated by Japanese Semiconductor Manufactu...

Takatsuki TA−274B...

$1,090.00

Sylvania 6550 NOS Matched Pair

I found these in my temperature/humidity controlled storage room this past week along with several other tubes (listed on Audiogon!) I did not recall I had. I have graded this pair as 8/10 due to pure external cosmetics. They are pure NOS, it is just the original warehous...

I found these in my temperature/humidity controlled storage room this past we...

$249.95

Sylvania 6550 NOS Matched Pair

I found these in my temperature/humidity controlled storage room this past week along with several other tubes (listed on Audiogon!) I did not recall I had. This is a beautiful VERY hard to find Sylvania 6550 matched pair in OEM boxes. Some shootou...

I found these in my temperature/humidity controlled storage room this past we...

Sylvania 6550 NOS Matched Pair

I found these in my temperature/humidity controlled storage room this past we...

RCA 12AX7A Grey Plate 1960's Matched Pair

I found these once again in my temperature/humidity controlled storage room (again, you'd think I would have all my tubes in boxes together, but noooooooooo...). I have two matched pair up on my listings. Each is tightly matched (see my other RCA 12AX7 listing for the other pair)....

I found these once again in my temperature/humidity controlled storage room (...

RCA 12AX7A Grey Plate 1960's Matched Pair

I found these once again in my temperature/humidity controlled storage room (...

Mullard Blackburn 12AT7 6201 Gold Pin

Mullard UK Factory coded 6201 Military Grade Gold Pin 12AT7 matched pair! Purchased from Kevin at Upscale Audio in 2016. I purchased the highest platinum grade Kevin offered for lowest noise le...

$249.99

Mullard Blackburn 12AT7 6201 Gold Pin

Mullard UK Factory coded 6201 Military Grade Gold Pin 12AT7 matched pair! Purchased from Kevin at Upscale Audio in 2016. I purchased the highest platinum grade Kevin offered for lowest noise levels. Further, this pair was cryogenic treated by Kevin's very demanding stand...

Mullard UK Factory coded 6201 Military Grade Gold Pin 12AT7 matched pair!<...

$249.99

Siemens 7308 USA Gold Aero

I found this along with the other two 6Dj8 type tubes in my storeroom this last week along with other tubes listed (you'd think I would put them all in one place when I packed them, but nooooooo.) This is a Gold Aero silk screened 7308 in gold lettering marked as "Gold Serie...

I found this along with the other two 6Dj8 type tubes in my storeroom this la...

$79.99

Amperex 6922 Gold Pin

Amperex 6922 Gold Pin screened Gold Aero "Gold Series". Gold Aero is now a long gone tube seller that re-screened their tubes for their own label. I bought several 6DJ8/6922/7308 type tubes in the late 1980's to early 1990's for my Counterpoint SA-5000 Preamplifier.&...

Amperex 6922 Gold Pin screened Gold Aero "Gold Series". Gold ...

$94.99

Amperex JAN 7308 Gold Pin 1972

NOS Large getter 1972 gold pin JAN 7308 in original box. Tests VERY strong and tight on both sides A & B. I bought several 6DJ8 type tubes back in the late 1980's/early 1990's for my Counterpoint SA-5000 Preamplifier I owned then. This tube I never got t...

NOS Large getter 1972 gold pin JAN 7308 in original box. Tests VERY str...

$129.00

Tung-Sol 6SU7GTY - USA - matched pair - military issue ...

A matched pair of Tung Sol 6SU7GTY tubes. The 6SU7GTY designati...

$170.00

Tung-Sol 6SU7GTY - USA - matched pair - wartime manufac...

A matched pair of Tung Sol 6SU7GTY tubes. The 6SU7GTY designati...

$165.00

Siemens & Telefunken Cca, 7308, 12AU7

I’ve fallen far far far down the NOS tubes rabbit hole. I’ve tried many, and there are remarkable differences across the spectrum, with Siemens Ccas as the reigning kings for me. That being said, a lot of these tubes bring great strengths and have different flavors. I’ve buil...

I’ve fallen far far far down the NOS tubes rabbit hole. I’ve t...

$100.00

MULLARD M8137/12AX7 MATCHED PAIR OF NEW OLD STOCK BRITI...

Mullard M8137 12AX7 British Military Pair of New Old Stock New in Box Vintage valves Rich warm holographic sounding British Valves Big box anode plates Black pin guards Made in the Mullard Mitchum factory Great Britain Test 100% strong on my B&K 747 tube ...

Mullard M8137 12AX7 British Military Pair of New Old Stock New in Box Vint...

$395.00

SIEMENS E88CC/6922 MATCHED PAIR OF GOLD PIN GERMAN VINT...

Siemens E88CC 6922 Matched Pair of New Old Stock New in Box Vintage Valves. Made in West Germany. Featuring Gold Pins. The same factory batch codes of 587 in white print on the glass of the valves. Test 100% strong a NOS tubes on my B&K747 tube tester. There are...

Siemens E88CC 6922 Matched Pair of New Old Stock New in Box Vintage Valves...

$195.00

5 each GE GE VT-4-C vacuum tubes

Rick Brown +1 612 817 1599 rbhifi1.com [email protected] 5 tubes for sale. One has a brownish material stuck to the tube. One has what appears to be rust on the internal connecting rods. Examine the pictures carefully. All tubes were removed from ...

Rick Brown +1 612 817 1599 rbhifi1.com [email protected]

$1,100.00

shuguang kt88z

This was purchased about 4 years ago but never used. It was only on for about 4 hours to make sure there is no defect and then back in the box. I bought it as a spare set for my audiopax 88 mono block driving Avantgarde trios. I just bought the new ayon amp that uses different tubes so i no longe...

This was purchased about 4 years ago but never used. It was only on for about...

$500.00

M U 6900 (Bendix type) 5687 7044 substitute vacuum tube...

NOS pair of M U 6900 (Bendix Red Bank style) dual triodes, substitutes for 5687 or 7044. Tested on Utracer 3+, see attached curves.

NOS pair of M U 6900 (Bendix Red Bank style) dual triodes, substitutes for 56...

$700.00