For Sale are a number of highly sought after 6sn7 and 6f8g tubes. Some time ago I bought a 6sn7 based preamp and decided to try as many of the highly regarded varieties as I could, these are ones I am not longer using. All have been tested on a recently Dan Nelson calibrated TV-7 D/U where 50 is minimum good; additionally all have been play tested in my system on highly efficient speakers (~100 db) without any noise or microphonics to my ears. I'm hesitant to give sonic impressions because it is system and circuit dependent, but to my ears and in my system the Sylvania's are sparkly and clear, the Brimar's smooth and mellow, the Ken Rads have the best bass punch and the tung sol's put you in the room with the musicians
I realize these are not cheap prices but if you are looking at these particular tubes you are probably aware of how highly sought after some of these are and that these are more than fair prices. Listed prices are the "cash and pickup" price, any fees or shipping would be additional. Happy to provide links to my feedback on a variety of audio marketplaces.
there are a few things I would be interested in trade as well, with cash in either direction depending:
Audio Research sp-3a preamplifier (in silver)
Denafrips Hermes DDC
some singles of a few tubes I'd like to pair up
Tung Sol Black Glass Round plate 6sn7's and 6f8g
Neotron Smoked Glass Round plate 6sn7
Valvo blue label 6201's (single or pair)
Genalex kt88's (single, pair, quad)
1. Sylvania Metal Base 6SN7W with US Navy anchor symbols, $500
tested scores
N029 Sylvania 6SN7W: 94/92
N030 Sylvania 6SN7W: 84/89
2. Brimar Brown Base Black Glass 6SN7GTY, $350
tested scores
N025 Brimar 6SN7GTY: 93/98
N026 Brimar 6SN7GTY: 93/95
3. Ken-Rad Black Glass JAN-CKR 6SN7GT VT-231, $200
N006 Ken Rad JAN-CKR 6SN7GT: 84/82
N007 Ken Rad JAN-CKR 6SN7GT: 96/93
4. Sylvania "Bad Boy"? 1952/1953 6SN7GT with Heavy chrome flashing, 3 hole facing black T plate, $120
base codes are 1953, top codes are 1952
N013 Sylvania 6SN7GT: 106/111
N014 Sylvania 6SN7GT: 118/100
I know these scores seem crazy high, but if you are familiar with sylvania's of the time period they often test much higher than spec
5. Sylvania "Bad Boy"? 1953 6SN7GT with Heavy chrome flashing, 3 hole facing black T plate, $110
one labeled Motorola with Sylvania Manufacturer code and matching construction and date codes to Sylvania Branded
N015 Sylvania 6SN7GT: 98/92
N016 Motorola/Sylvania 6SN7GT: 95/98
6. Tung Sol Black Glass Flat Ladder Plate 6F8G / VT-99, $300
N018 Tung Sol 6F8G: 98/96
N032 Tung Sol VT-99/6F8G: 103/98
7. Sylvania Smoked Glass Flat Ladder Plate 6F8G, $100
N001 Sylvania 6F8G: 86/86
N002 Sylvania 6F8G: 92/80
Thanks for looking, more pictures of any of these are available, picture of the preamp for reference *not for sale. These are listed in a few different venues, so let me know sooner rather than later if you are interested and your location so I can figure actual shipping costs (though unlikely to be that high within the US as tubes are light and not very bulky)
I realize these are not cheap prices but if you are looking at these particular tubes you are probably aware of how highly sought after some of these are and that these are more than fair prices. Listed prices are the "cash and pickup" price, any fees or shipping would be additional. Happy to provide links to my feedback on a variety of audio marketplaces.
there are a few things I would be interested in trade as well, with cash in either direction depending:
Audio Research sp-3a preamplifier (in silver)
Denafrips Hermes DDC
some singles of a few tubes I'd like to pair up
Tung Sol Black Glass Round plate 6sn7's and 6f8g
Neotron Smoked Glass Round plate 6sn7
Valvo blue label 6201's (single or pair)
Genalex kt88's (single, pair, quad)
1. Sylvania Metal Base 6SN7W with US Navy anchor symbols, $500
tested scores
N029 Sylvania 6SN7W: 94/92
N030 Sylvania 6SN7W: 84/89
2. Brimar Brown Base Black Glass 6SN7GTY, $350
tested scores
N025 Brimar 6SN7GTY: 93/98
N026 Brimar 6SN7GTY: 93/95
3. Ken-Rad Black Glass JAN-CKR 6SN7GT VT-231, $200
N006 Ken Rad JAN-CKR 6SN7GT: 84/82
N007 Ken Rad JAN-CKR 6SN7GT: 96/93
4. Sylvania "Bad Boy"? 1952/1953 6SN7GT with Heavy chrome flashing, 3 hole facing black T plate, $120
base codes are 1953, top codes are 1952
N013 Sylvania 6SN7GT: 106/111
N014 Sylvania 6SN7GT: 118/100
I know these scores seem crazy high, but if you are familiar with sylvania's of the time period they often test much higher than spec
5. Sylvania "Bad Boy"? 1953 6SN7GT with Heavy chrome flashing, 3 hole facing black T plate, $110
one labeled Motorola with Sylvania Manufacturer code and matching construction and date codes to Sylvania Branded
N015 Sylvania 6SN7GT: 98/92
N016 Motorola/Sylvania 6SN7GT: 95/98
6. Tung Sol Black Glass Flat Ladder Plate 6F8G / VT-99, $300
N018 Tung Sol 6F8G: 98/96
N032 Tung Sol VT-99/6F8G: 103/98
7. Sylvania Smoked Glass Flat Ladder Plate 6F8G, $100
N001 Sylvania 6F8G: 86/86
N002 Sylvania 6F8G: 92/80
Thanks for looking, more pictures of any of these are available, picture of the preamp for reference *not for sale. These are listed in a few different venues, so let me know sooner rather than later if you are interested and your location so I can figure actual shipping costs (though unlikely to be that high within the US as tubes are light and not very bulky)
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