[SHIMACM]

My Chatham 6as7g and Raytheon Vt231 tubes arrived. I'm still feeling their sound. But the first press is very good. Last night I could hear Chatham with RCA Vt231. What a combination! It surpassed my RCA JAN 6as7g in almost all aspects. Chatham is more holographic, has a cleaner sound and the midrange is more developed. There are details in my songs that I hadn't noticed before with other force tubes. Raytheon vt231 I heard it very quickly and only with RCA 6as7g. I will listen to you more so I can put my impressions here. Can anyone here compare Chatham 6as7g to Tung-sol / chatham 5998? What would the 5998 stand out for?

 

[JKDJedi]

My Chatham 6as7g and Raytheon Vt231 tubes arrived. I'm still feeling their sound. But the first press is very good. Last night I could hear Chatham with RCA Vt231. What a combination! It surpassed my RCA JAN 6as7g in almost all aspects. Chatham is more holographic, has a cleaner sound and the midrange is more developed. There are details in my songs that I hadn't noticed before with other force tubes. Raytheon vt231 I heard it very quickly and only with RCA 6as7g. I will listen to you more so I can put my impressions here. Can anyone here compare Chatham 6as7g to Tung-sol / chatham 5998? What would the 5998 stand out for?

I missed out on a bid for the Chatham's... awesome that you finally got your tubes! They'll probably sound even better once settled in.

 

[JKDJedi]

Sure. We all believe you. Kinda.

I'm no expert on Bad Boys (and totally ignorant on Fat Boys LOL!) but this looks pretty close. EIA code is right for Sylvania. Not sure if Bad Boys went into 1953 though. Pretty cheap if it's for real.

https://www.ebay.com/itm/Motorola-6SN7GT-audio-vacuum-tube-Fat-Boy-3-hole-tested-NOS/392774681166?_trkparms=aid=1110009&algo=SPLICE.COMPLISTINGS&ao=1&asc=20200423103423&meid=267afe2d0fde42ddbff52acc9d31bc70&pid=100011&rk=1&rkt=12&sd=143618759363&itm=392774681166&pmt=1&noa=0&pg=2047675&algv=default&brand=Motorola&_trksid=p2047675.c100011.m1850

They dropped the price on this a little, I caved... See how it compares to the original, thanks for the link. @bcowen

 

[bcowen]

They dropped the price on this a little, I caved... See how it compares to the original, thanks for the link. @bcowen

Well let us know how it sounds. Not sure how a Fat Boy compares to a Bad Boy, but I guess one is a more discriminatory moniker than the other. LOL!!!

 

[SHIMACM]

Well folks I did a battery of tests here involving the following tubes: RCA 6SN7GT VT 231 gray glass, KEN RAD 6SN7GT VT231 transparent glass, RAYTHEON 6SN7GT VT231, CHATHAM 6AS7G and RCA JAN 6AS7G. Well then. Crossing the force tubes with the pre tubes I obtained the following preference: 1) RCA VT231 and CHATHAM. 2) KEN RAD and CHATHAM. 3) RCA VT231 AND RCA 6AS7G. 4) KEN RAD AND RCA 6AS7G. 5) RAYTHEON and RCA 6AS7G and 6) RAYTHEON and CHATHAM. Of the configurations above, the only one I didn't really like was the Raytheon VT231 and CHATHAM. I found it a little shiny on my T1 and consequently fatiguing, but it should look very good on the HD650. The combination RCA VT231 and CHATHAM sounded best to my ears, followed closely by CHATHAM and KEN RAD VT231.

 

[SHIMACM]

After much research, I managed to buy my Tung-Sol 5998, and for $ 65 (excluding shipping). Okay, the tube is not tested. But the seller said it is a NOS. Let's see if I'm going to received a good tube. Now my wish list comes down to Melz and Bendix 6080.

 

[JKDJedi]

After much research, I managed to buy my Tung-Sol 5998, and for $ 65 (excluding shipping). Okay, the tube is not tested. But the seller said it is a NOS. Let's see if I'm going to received a good tube. Now my wish list comes down to Melz and Bendix 6080.

 

[Slade01]

Just as an aside....why do some tube sellers write directly on the tubes with a sharpie??? This kills me.

 

[JKDJedi]

Just as an aside....why do some tube sellers write directly on the tubes with a sharpie??? This kills me.

I feel ya, trying to get rid of one sent to me like that.

 

[JKDJedi]

Happy Wednesday Folks

 

[JackSkully]

Hey guys I have 3 Mullard 6080 tested and working that I got from a good friend who was moving how much do they go for individually.
Also they are not rebranded and have a metal base

 

[SHIMACM]

Is the Tung-sol 5998 a tube of 5000 hours or 10000 hours of life?

 

[JKDJedi]

Hey guys I have 3 Mullard 6080 tested and working that I got from a good friend who was moving how much do they go for individually.
Also they are not rebranded and have a metal base

Those can go up to anywhere $100 - $150 if tested NOS (80 to 100)% life in the tube. They go for $60 for members here at this thread only

 

[JKDJedi]

Is the Tung-sol 5998 a tube of 5000 hours or 10000 hours of life?

I'd doubt they go for 10,000 hours, there's only one type of tube that I know of that claims that number, and that's the 5692 (RCA, CBS-Hytron) I rotate my tubes frequently, almost on a weekly basis, sometimes daily. Life of a tube roller.Your tubes "might" last longer if you have some type of rotation system. One of my tubes only comes out once every full moon.

 

[SHIMACM]

But is at least nominally informed that they last 10,000 hours? Since it is a miliary tube?