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Kasper Bergholt, Denmark - Tube collection

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ID = 33776
Photo Kasper Bergholt

Below you find a part of the tube collection Kasper Bergholt.

I'm a user, collector, archiver and Copenhagen photographer of a range of vacuum tubes (valves in British English), for example driver-stage tubes such as the 6CS7 tube, the 12AU7A, the 12HB7A, the 6CJ3 family of damper tube and 6X5GT rectifier tubes, and lastly, the 5881/6L6/6L6G and EL34 family of output tubes. No 300B and single-triode designs for me so far.

Being the satisfied owner of a Leben CS-600 tube amplifier in addition to an RS30-EQ RIAA, tubes used in these products, naturally, for the time being are of most interest to me.

In addition to photographing and arching/documenting tubes on this site, I keep high-resolution archives for free, non-commercial use on Pbase & Wikipedia, some of which are added to Wikimedia for free use too, in addition to filling in the blanks for tubes that don't have an image associated with their listing. I use vintage Nikon & Zeiss gear.

Other hobbies are Tai Chi, gastronomy, Pu-Erh tea, listening to music, for the time being I'm especially interested in Japanese recordings (most of which are of sublime quality) -- through a Goldring cartridge and the Leben RS-30EQ RIAA -- of a variety of artists & genres and photography-based art featuring photos of vacuum tubes, most prominently in my 'Objects for an Ideal Home' series, in addition to reading & writing poetry.
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Excerpt from the tube collection of Kasper Bergholt. These images (tube photos) were uploaded to the respective tubes or valves by Kasper Bergholt.

New Old Stock E80CC tube produced in Germany by Siemens.
E80CC
Common type Europe tube/semi... EU
Original box of a Telefunken ECC81 tube. Diamond-marked. Made in Berlin series. For use in my Leben RS30-EQ RIAA.
ECC81 1951
Common type Europe tube/semi... EU
Telefunken ECC82 tube/valve marked B9205626, meaning date of production September 26th of either 1975 or 1965. Dated based on Eric Barbours ‘Tube Collector’, volume II.
ECC82 1951
Common type Europe tube/semi... EU
Tube box for a RFT-made EL34 NOS tube branded 'Philips'. I use a quad of EL34 in my Leben CS-600 tube amplifier. Photo: Kasper Bergholt.
EL34 1950
Common type Europe tube/semi... EU
Unbranded CV574 New Old Stock tube from own collection for use in Leben RS30EQ RIAA.
CV574
Common type Great Britain tu... GB
CV1958 NOS tube from British Haltron - from own collection.
CV1958
Common type Great Britain tu... GB
Text on the box of the CV 2659 in the photo is as follors: Valve Electronic CV2659 3D 21A J.S. No. 5960-99-000-2659 A.M. REF. No. 10CV / 2659 2923 Photo: Kasper Bergholt. Nikon D3 + Zeiss Milvus 55mm.
CV2659
Common type USA tube/semicond. USA
VR-105 tube, marked 'Made in USA', Hytron.
VR105
Common type USA tube/semicond. USA
Jan CHS VT-126B rectificer tube produced in June 1945 for theU.S. Army / U.S. Navy by Sylvania Electric Products in the USA. Photo: Jasper Bergholt. From personal collection and planned use in Leben RS-30EQ RIAA.
VT-126B
Common type USA tube/semicond. USA
U.S. Army S.U. Navy VT-174A tube box - the box has the following text: Jan 6K8K VT-167A Vacuum tube Manufactured by Radio Corp. Of America Order No. 1508-Phila-44 Accepted Mar. 1944
VT-167A
Common type USA tube/semicond. USA
Texton the box of this VT-171 tube, which is from my own collection. U.S. Army Tube: Jan-CHS - 1R: VT-171 S.C. Order No. 17361-Phila-45-12 Produced by: Sylvania Electric Products INC. Acceptance date: 45/5 (May 1945th). Photo: Kasper Bergholt Equipment used: Zeiss Milvus 55mm f/2.0
VT-171
Common type USA tube/semicond. USA
Sylvania 6AG5 New Old Stock tube from own collection.
6AG5
Common type USA tube/semicond. USA
6AK5 tube produced by Mullard in the United Kingdom for Philips. For use in a Yamamoto Sound Craft CA-04 Line level Tube Preamp.
6AK5 1942
Common type USA tube/semicond. USA
6CS/ tubes from General Electric marked '6CS7' and serial number 'LB 46' packaging for Italians state radio 'Tassa Radiofonica'. These 6CS's are estimated to be from the 50's or 60's. Small dark plate design. Photo by Kasper Bergholt. From own collection. For use in the driver stage of a Japanese Leben CS-600 amplifier. Photo placed under Wikimedia license and can be used freely when attributed it to its photographer.
6CS7
Common type USA tube/semicond. USA
6DWB4 tube box from New Old Stock General Electric tube. Equivalent to 6CJ3. From own collection for use in Leben CS-600 tube amplifier. Being at tube no longer in production I've stashed up quite heavily on these.
6DW4B
Common type USA tube/semicond. USA
Tube box containing one Sylvania 6K6GT vacuum tube. Photographed by Kasper Bergholt using a Nikon D3 & Zeiss Milvus lens.
6K6GT
Common type USA tube/semicond. USA
Close-up photograph of a vintage 6X5GT tube from RCA (American Radio Association). The tubes is from the 50's or 60's - the Golden Era of US production of vacuum tubes. 6X5GT tubes are used in for example the RS30-EQ RIAA by Japanese Hi Fi producer Leben. The 6X5GT tube in the image is a vintage NOS (New Old Stock) tube aquired from an American surplus inventory dealer. Tests NOS. 6X5GT tubes are also used in Audio Note UK products, e.g. the Audio Note DAC 3. The photo of the 6X5GT is shot with a Nikon D3 camera using a 60mm 2.8 macro lens. Read more about it <a href='url'>https://bergholt.net/en/leben-tubes#Tubes_used_in_the_Leben_RS-30EQ_RIAA</a>. The image can be freely used in non-commercial contexts, and it may sampled & modified too. Copyright: Kasper Bergholt.
6X5GT 1938
Common type USA tube/semicond. USA
New Old Stock 6X5GT/G rectifier tube produced by American Sylvania. Tube writing reads: '6X5GT/G' + 'Sylvania'. From own collection for use in Leben RS-30EQ RIAA.
6X5GT/G
Common type USA tube/semicond. USA
Siemens 12AT7WC tube box - NOS & NIB. 12AT7WC (US) = E81CC (EU). From own collection for use in Leben RS30-EQ, which a project of testing different 12AT7 tubes in over time and note differences.
12AT7WC
Common type USA tube/semicond. USA
12AU7A tube from Japanese Hitachi. Photo: Kasper Bergholt.
12AU7A
Common type USA tube/semicond. USA
Close-up picture of a 884 vacuum tube from American producers RCA (Radio Corporation of America). Photographed with a Nikon D3 with a Zeiss Milvus 50mm lens.
884
Common type USA tube/semicond. USA
Vintage NOS 6189 tube produced July 1970 by American producer General Electric. Photo by: Kasper Bergholt. From own collection.
6189
Common type USA tube/semicond. USA
Russian 6N3C tub - presumably 70s production by either Reflector or Proton. For use in Leben CS-600 tube amplifier.
6П3С
Common type USSR (SU) tube/s... SU
Russian 6П3С-Е tube produced around 1980 by Russian manufacturer 'Reflector'. For use in my Leben CS-600 amplifier. Military grade = Expected life-time more than 5,000 hours.
6П3С-Е
Common type USSR (SU) tube/s... SU
CV 455 tube, New Old Stock, presumably produced by Mullard or Brimar in the 60s. For use in Leben RS30-EQ RIAA.
CV455
Common type Worldwide tube/s... ZZ
Tube box from a NOS 6J6W vacuum tube. From own collection.
6J6W
Common type Worldwide tube/s... ZZ
New Old Stock 12AT7 tube - one of two symetrically matched for use in Leben RS30-EQ RIAA. From own collection.
12AT7 1947
Common type Worldwide tube/s... ZZ
Modern-day 12AU7 tube from Russian producer Tung Sol.
12AU7 1948
Common type Worldwide tube/s... ZZ
12AT7EH tube from Electro Harmonix, modern production of the ECC81/12AT7, made in Russia. The 12AT7EH tube is marked 2103 in yellow writing, ant its leg are markedly red. I got this tube from a Leben RS30EQ RIAA, which had it premounted.
12AT7EH
Electro-Harmonix; Long Islan... USA
EF tube marked 'EF 95' & 'Philips' + 'Import'. Produced in England by Mullard for PHilips in 1954. This tube is one of two to be used in a Japanese Yamamoto Sound Craft CA-04 line-level tube preamp - a model which has two of EF95 tubes in the driver stage.
EF95 1953
Mullard Radio Valve Co. Ltd.; GB
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Tube collector page of valve collector Kasper Bergholt as «own HP at RMorg»
As a member of Radiomuseum.org Kasper Bergholt displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Kasper Bergholt started his/her tube collection (valve collection) here on 18.Apr.2023. [index-en]

  
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