Where to Sell Vintage AMPs and Pre-AMPs

cameron351

DTVUSA Jr. Member
#1
Hello,
I have several old tube amps and tube pre amps and I really don't need them so I would like to sell them. I don't know where I should post them for sale, I am afraid ebay may not reach the community of vintage folks. Can any one suggest a good place to list what I have?

Thank you,
Cameron
 

Fringe Reception

Super Moderator, Chief Content Editor
Staff member
#2
idea, thankls to Cameron351

:welcome: Cameron351,

I love (old) tube-type equipment and you may have started an entirely new thread on the Forum.

I suggest to our Forum Moderators we establish a way for Forum Members to offer things for sale (not links to Craigslist or ePay) but directly from Forum member to Forum member.

Comments?

Jim

PS What do you have available???
 
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#3
Cameron, I've sold plenty of vintage tube equipment on eBay and the prices realized are usually quite good. On the negative side of the ledger, eBay and PayPal fees are quite high. Check out the items for sale under Electronics>Vintage Electronics on eBay. You'll find plenty of tube equipment. Another location that may be preferable to eBay is Audiogon.com.
 
#4
what makes you think that people are not interested in tube amps? what do you have? I know of someone that is going on forever on tube amps maybe I can bring this to their attention on your behalf.
 

cameron351

DTVUSA Jr. Member
#5
Well, sorry for the long pause. But here is what I have, I don't know much about this stuff so if you can tell me what it is; that would be helpful.
Here is a mono amp with its pwr supply


I have two of these babies, I guess that two mono amps will give you stereo.
 

Fringe Reception

Super Moderator, Chief Content Editor
Staff member
#7
Cameron,

The first photo of your 'unknown' amp/s looks like it uses a pair of 6L6s push-pull. Can you verify that? We can guess the output based on the final amplifier tubes.

Your Dynaco's are interesting (to me) and I bet you can find information about them online: they may be of value.

The Heath pre-amp is a distant memory to me.

Your Pedersen eletronics pre-amp is interesting because it is meant to be 'rack-mounted' and it may be a Commercial unit. However, I am totally unfamiliar with that brand name.

So, what's the story and why do you have as much tube gear as I do?

Jim
 

n2rj

Moderator
Staff member
#8
I've seen tube gear rise in popularity. People love the warm sound. But these are vintage for collectors, IMO. I would clean it up, take a few good photos and toss it up on ebay if you want to sell. I would have bought but I have way too many old tube radios and boxes upon boxes of tubes in the basement I've been using to refurbish and build stuff. :)
 

cameron351

DTVUSA Jr. Member
#9
Yes the tubes are 6L6 but I didn't see the "s". I have searched a bit on the Dynaco's but haven't found much, if you have time can you point me in a direction? I found information on the heathkit but nothing on the Pedersen preamp. I got this stuff out of my grandfathers basement, he says it all works and he warned me not to plug in the power supply without having the amp connected. As for me; I work on electronic equipment but have never messed with tube equipment. I like fixing old Arcade and Pinball machines, I am mostly a analog guy but I can stumble through digital troubleshooting but, I dont know anything about Tubes. By the looks of these things; they look like they could produce some heat and make the power meter zing. I will try and find some more info and do what n2jr says and put them on ebay. Any idea on a starting price for these items?
Thanks a bunch for the help so far,
Cameron
 

Fringe Reception

Super Moderator, Chief Content Editor
Staff member
#10
Cameron,

Regarding the first pair of amplifiers, I looked up the (potential) power output of two 6L6 tubes running 'push-pull' in the 1953 Radio Amateur's Handbook. If the circuitry is Class A, the output power will be around 18.5 watts. If run as Class AB amplifiers, depending on the circuitry and bias, each amplifier might put out between 24.5 and 47 watts. The 6L6 was a very popular tube and spares should be readily available. Have you looked under the chassis to see if there is any identifying information?

Jim

PS I went thru the advertisments in the 1953 book mentioned above and the audio amplifiers available are all built on a single chassis, with the exception of a Heathkit model. That suggests to me your first pictured amplifier pre-dates 1953. I'll forward your photos to a friend in his late 70s who may be able to identfy it.
 
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cameron351

DTVUSA Jr. Member
#11
Ok, here are some photos of the bottom of the first amp and pwr supply. It looks like it could have been a heathkit because there are pencel number marks by the pins. If I remember correctly the heathkit instructions tell you to do this when you are building.




and here are the Dynaco amp and pwr supply





I also found some paperwork, photofact folders and a paper on the Dynaco transformers with several possible electrical circuits it could have been used in. I should be able to look at the diagrams and determine how it was built. Here is the front cover.

 

Fringe Reception

Super Moderator, Chief Content Editor
Staff member
#12
Cameron,

My 'old tech' friend responded and he thinks the first units are 'home brew' and after seeing the new photos, I agree with him. The two vertically mounted 1/4" phone jacks adjacent to the HOT 6L6 tubes almost guarantees it. Not a good location for them.

... (Note: the first sucessful audio amp I built used two 6L6's ... small world!)

By the way the Dyna Company offered their wares two ways: factory built or in kit form, so was your grandfather a 'home-brewer' and/or a 'kit builder'?
Jim
 

cameron351

DTVUSA Jr. Member
#13
Yes, he is a builder. He has built a large cabin cruiser boat with a hemi in it from a kit, Him and I built an RV6 aircraft from a kit and he has built model trains and electronics too. So I would guess he may have built these too. I guess I will post them on ebay and see what the world thinks they are worth. I will put like $20 bucks to start and see what happens. I don't want to package and ship these things unless I can make $20 bucks.
 
#14
Cameron, your grandfather's Pedersen preamp made it to Carolina from Lafayette, California sometime between 1955 and 1958. Pedersen was like Gott and a number of other small stereo electronics firms that made decent gear, but could not successfully make the transfer from mono rigs to stereo, and closed their door.

I will try tosend you a pm, as I would be interested in purchasing the preamp for a mono rig I am setting up.
 
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