[mantis]

DOES ANYONE KNOW WHAT THIS IS WORTH? 2- DYNAKIT MARK III 60WTUBE AMPS,DYNA PAS TUBE PREAMP.DYNACO FM-3 TUNER. ALL IN VERY GOOD CONDITION, LAST USED IN 2000.

[Indiansprings]

Very annoying reading posts in all capital letters. Considerd shouting.
Well they haven't been used in 12 years. So I would say their operation might be questionable. I think you would need to get them cleaned up and thoughly checked out. That might be an investment greater than their value. So, best short answer is, It depends!

[SoCalWJS]

If you read through the website linked, it'll give you some idea of how much to get them fixed and what they are worth.

http://www.dynaco-doctor.com/

[mantis]

Thank you all for the advice. I was just wondering what price to sell all 4 pieces for. No comparable systems for sale on ebay or elsewhere.

[avahifi]

Just a simple bit of advice.

The part most likely to be defective in your Dynaco system, other than vacuum tubes, is the selenium rectifier in the PAS preamp.  It ages in long term use and becomes resistive.  It is supposed to be putting out plus and minus 12 volts for the tube heaters.  In old PAS units, this voltage almost always has dropped to plus and minus 7 volts or thereabouts.  This causes the signal tubes to barely turn on and results in wide band mud and compression.

The fix is easy.  Simply wire 1N4007 diodes in parallel with each half of the selenium rectifier.  This will usually bring the voltage right back up to plus and minus 12V and restore performance more than you would think.

A better fix is to replace the selenium rectifier and the two old electrolytics below it under the clamp with new parts of equivalent value. Note that you will be replacing the selenium rectifier (an obsolete part) with two 1N4007 diodes.

If you get the system working  like new, you might have second thoughts about selling it.

Regards,

Frank Van Alstine

[mantis]

Thanks Frank. I'm comitted to sell and don't have the money or skills necessary to fix, if necessary.

[cheap-Jack]

Hi.

I'm comitted to sell and don't have the money or skills necessary to fix, if necessary.

I wish you are a DIY audiophile like yours truly. So you could fix them & even enjoy them rather than selling them for some crappie prices.

About 6 years back, an old acquaintance of mine donated me his 50-year old Dynaco PS-2 & ST-70, noisy, humming & distorted etc etc.. I fixed them bigtime thanks for my knowing the business enough without need to finance those Dynaco parts specialists. What aroused my interest of fixing them are the stock 50-year-young Telefunken ECC83s in the PS-2. I really wanted to hear how good such vintage tubes would sound once restored, & so I fixed them MY way with minimum cost.

Now they both sing like a nightingale. I am very gratified.

That's what I call it "total involvement" - fix it & enjoy it.

c-J

[mantis]

Thanks for the support. Everything was sold to one person on Craigs List for $400. I just hope it was a fair price for both of us.

[Indiansprings]

I wish you would have givin us a shot at all of it for $400. I would have took it all.

[bregez]

Thanks for the support. Everything was sold to one person on Craigs List for $400. I just hope it was a fair price for both of us.

Someone got a great deal!  The PAS preamps usually go for $200-250 in mediocre condition, the FM3's get around $70 in fair condition, and the Mark III's can catch at least $150 each.  When you include the original tubes the price only goes up. 

[Indiansprings]

Someone got a great deal!  The PAS preamps usually go for $200-250 in mediocre condition, the FM3's get around $70 in fair condition, and the Mark III's can catch at least $150 each.  When you include the original tubes the price only goes up.

Clean MK III in good working can command up in the $7-800  pair range. PAS3 is about right. FM3 with a good tuning eye will go close to $200

[bregez]

Clean MK III in good working can command up in the $7-800  pair range. PAS3 is about right. FM3 with a good tuning eye will go close to $200

I am not sure why the Dynaco tube stuff commands such high prices.   Other than the iron and chassis (PAS and amps), there is not much worth keeping as most of the passive components need replacement and the phenolic boards are likely chared or cracked.  The PAS in its stock form is just an average sounding preamp, to make it presentable there are many modifications that one can do but these modifications typically reduce the value of the PAS.  So what are these people who drop $250 on an old PAS doing with them?  Are they rebuilding them, using them in stock form, or installing rebuild kits like the one that AVA offers. 

[mantis]

Thanks for the replies. If anyone had expressed any interest or dollar values of the equipment I would have gladly sold to an AC member but nobody did until after I posted it was gone. I wrongly interpreted this as no interest. Sorry.

[rcag_ils]

If you had posted all you wanted was $400.00 for everything, I am sure there would have been a lot of interest. Who knows, this post might have been a hoax. It's hard to believe anyone would not have known the value of Dyna gear. It's the internet, you know.

[mantis]

If opinions on $value & interest by AC members were posted before I sold  I would have sold higher. No one, prior to sale, suggested a hoax, and it wasn"t. As stated earlier, my internet research, before asking AC members, did not find any recent actual sales. I regret I didn't have the apparent Dynaco knowledge that you have. Perhaps I could have got more than $400. from you.

[cheap-Jack]

Hi.

(1) I am not sure why the Dynaco tube stuff commands such high prices. 

(2) The PAS in its stock form is just an average sounding preamp, to make it presentable there are many modifications that one can do but these modifications typically reduce the value of the PAS. 

(3) So what are these people who drop $250 on an old PAS doing with them?  Are they rebuilding them, using them in stock form, or installing rebuild kits like the one that AVA offers.

(1) For their resale values being so popular vintage amps still workable.

(2) Agreed. Stock PAS preamps do NOT impress me at all. That's why I restored my PAS-2 big bigtime to make it sounds like a very hi-end modern amp. Not intend for reale it. Or I 'd ask for a premium!

(3) There are numberless ways of restoring or upgrading them. I have done mine for least money not in any conventional way by only replacing the parts inside or buying any upgraded boards from specialist vendors.

I did it using modern amp design ideas that probably no DIYers did so before.
Yet it now sounds suuuperb vs any most modern hi-end designs at a mimimum cost.

Right design concept gives us the right sound.

c-J

[mantis]

$400. Dynaco sale update: I just learned the new owner cleaned tube sockets,volume controls,switches, replaced one tube, adjusted tuner and says it sounds great. Amps need more work very soon but are OK now. Thanks again for the help.