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 Post subject: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 6:15 pm 
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Joined: Jan Fri 15, 2021 2:56 am
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Location: Cookeville TN
Could anyone in the forum help with the value of these 2 tube testers?
One is a TV-7D/U and the other one is a STK600
Thank You!


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 6:56 pm 
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Joined: Jun Sat 15, 2019 7:43 pm
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Check Ebay for examples that have sold and you will get a rough idea of value.

DM


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 7:40 pm 
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Isn't the TV-7 the supposed "gold standard" for trustworthy test results of tubes offered to hifi and guitar amp aficionados? Along with certain Hickock testers.

The B&K also seems to test mutual conductance, a step up from simpler emission testers.

Looks like you have some tube adapters for both of them as well.

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 8:13 pm 
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Joined: Jan Fri 15, 2021 2:56 am
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Location: Cookeville TN
Yes, when I post them for sale I will include all accessories

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 8:48 pm 
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The B&K 600 is geared toward TV repair, it is an emission tester but has a very good leakage and gas test which is very useful in TV repair.

DM


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 9:52 pm 
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I have been watching the prices of tube testers for a while.

I recently bought a B&K 707 (locally) for $100 and sent it out for minor repair and calibration. That ran me another $200 on top of the purchase price (plus shipping in two directions cross country!!). But the 707 is a very nice unit and well worth it.

The B&K 600 and 606 Emission testers sell for an average of $100.

The TV-7 t (if working) is a $900 plus unit. Professional calibration will run around $250 to $300, depending on who you send it too. There is one on eBay right now for $1600. But that unit looks mint!!

Hope that helps!


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 10:35 pm 
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Check EBay “sold” prices. The asking price is irrelevant

That will give you a rough idea as to how the market is currently valuing these things. As noted, the top prices are commanded by units that have been professionally calibrated and repaired. There are very few recognized experts in this field unfortunately, and they are expensive, so factor that into your expectations for sold pricing

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Sat 25, 2021 10:50 pm 
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Joined: Jan Fri 15, 2021 2:56 am
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Location: Cookeville TN
Thanks for the info.

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Wed 29, 2021 1:28 am 
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Location: Little Rock, AR
If I had either of them they would be worth thousands - but since you have them, I'd price them at about $25 for the B&K, and $35 for the TV-7

:lol: :lol: :lol:

But that's about the way people play it these days.

"MY STUFF" = Worth its weight in GOLD
"YOUR STUFF" = suspect junk barely worth picking up

All kidding aside, the Hickock is pretty nice, as tube testers go. Good luck with your sale. Remember to add the words "vintage" and "calibrated" to the eBay ad. Also "rare".

"Using this TV-7 tube tester, you can identify 12AU7 so perfectly graded that your soundstage will become broader than you ever imagined. Widths of 450 degrees wide or more become common. Using the TV-7 rewards with a silence so black that it will absorb spurious sounds from other lesser sources. Buy now - get glorious liquid highs, horseradish sharp midrange accuracy, and bass that envelops you like a sonic womb."


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Sep Wed 29, 2021 7:16 am 
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Marvelous. Were you a marketing guru or a snake oil salesman in a previous life?

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Oct Fri 01, 2021 9:47 pm 
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Joined: Jan Fri 11, 2019 4:43 am
Posts: 10
I recently sold my TV/7 at a hamfest for $400. Very clean but the original version of the TV/7.
Not top dollar but he just handed me cash and walked away with it. I saw someone else at the same fest also asking $400 for the TV/7. I'm keeping my not so clean TV/7D and Hickok 752.
Bob


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Oct Fri 01, 2021 10:46 pm 
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Location: Tucson AZ
Quote:
rewards with a silence so black that it will absorb spurious sounds from other lesser sources.


That is art in words!


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Oct Sat 02, 2021 12:58 am 
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Location: Ohio 45177
I got my 7B/U on ebay some years ago but I shopped for a long time to get a good deal on one. There are helpful sites to tell you how to calibrate them yourself if you think it needs it. The only thing difficult is the so called "calibrated test tube" which is a 6L6 I think. Scarce and some will sell you ones that they checked themselves somehow and determined what they should read. I think the main thing needed is a very accurate 20,000 ohms per volt VOM, for starters. As a high impedance DVM will give different readings. IF you are seling tubes, for some reason people will accept TV-7 test results as gospel whereas if you told them they tested good on say, a Heathkit or something, not so much.

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 Post subject: Re: Help with value of Tube Testers
PostPosted: Oct Sat 02, 2021 4:17 am 
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Location: Riverside Ca. 92504
CoolBlueGlow wrote:
If I had either of them they would be worth thousands - but since you have them, I'd price them at about $25 for the B&K, and $35 for the TV-7

:lol: :lol: :lol:

But that's about the way people play it these days.

"MY STUFF" = Worth its weight in GOLD
"YOUR STUFF" = suspect junk barely worth picking up

All kidding aside, the Hickock is pretty nice, as tube testers go. Good luck with your sale. Remember to add the words "vintage" and "calibrated" to the eBay ad. Also "rare".

"Using this TV-7 tube tester, you can identify 12AU7 so perfectly graded that your soundstage will become broader than you ever imagined. Widths of 450 degrees wide or more become common. Using the TV-7 rewards with a silence so black that it will absorb spurious sounds from other lesser sources. Buy now - get glorious liquid highs, horseradish sharp midrange accuracy, and bass that envelops you like a sonic womb."



:lol: :lol: :lol: You could also add tester untested...


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 Post subject: Re: Help with value of Tube Testers
PostPosted: Oct Sat 02, 2021 4:44 am 
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Joined: Jan Tue 10, 2012 8:39 am
Posts: 2887
Rare has a special meaning. Either they couldn't sell any, or they have all fallen apart.


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