Darkvoice 336 + 336i Tuberolling [ tubes ] - Page 91

Just "6SN7" would almost never even be printed on the box - it would say 6SN7GT, or 6SN7GTB, etc. So likely the boxes were for other tubes. But vintage boxes are very cool

back to the GE run this week...

6SN7 GTB 60-09 188-5
6080 62-09 188-21 from a differenct factory.
do those stars mean anything?

GE had a "line" of tubes call "5-Star". They were supposed to be premium selected. I have some 5-star 5751's, but have never seen a 5-star 6080. Cool!

Schenectady, New York

SWEET! i have a pair.

it certainly sounds "different" from last week's gray-plate RCA 6AS7. slightly more forward would be my 5-hour only impression.

5-star 6080's - that's a pair I have not seen before. Nice!

this week...

GE 6SN7 GTA 3-52 188-4 what factory is that? Oskari.
GE JAN-CG-6AS7G 5-39 188-5

first impression? the sound seems lighter and faster than the last week's 6080/6SN7GTB.

speaking of the 6080...took a picture of the pair of the GE 5-star.

Not sure. Probably Owensboro but could be elsewhere in Kentucky.

a pair of RCA 6080 tubes just arrive...

79 39

would that be the 39th week of 79? the RCA logo and the box design certainly have that 70's feeling.

Agreed. Those markings with the dots are typical to GE.

more tubes!

received 2 SYLVANIA 6080WA. the text on the top one is rather worn; the bottom on has 6822. would that be the date code for the 22nd week of 1968? it also has etched text on the glass.

also 2 PHILCO 6SN7 GTB tubes. the seller said the 312 make them SYLVANIA. that true?

put one of each into the DV336i. very slight hum at the beginning. before the end of the first CD it's gone.

It would.

Sure is.

was enjoying the last combo so much...(Russian 6H13C + Sylvania 6SN7 GTB) but it's tiime to try something different:

Chatham Electronics 6080WA
Du Mont 6SN7 GTB

both came as part of mixed bag tube purchase. would appreciate any info.

Those Dumonts are almost certainly Sylvanias. And as you can see, they were made in 1964

Not sure of the exact vintage on the Chathams, whether that is before or after Chatham was acquired by Tung-Sol.

back to 336i...

been listening with Musical Fidelity X-can v3 (with Pink Floyd mod + Pinkie power supply) in the past weeks.

picked these for next week:

RCA JAN CRC-6SN7-GT SPERRY No. 718115 (used previously)
RCA JAN CRC-6080 56-52