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Adcom?

Does ADCOM still make products and most importantly sell products?

I bought a amp/pre-amp combination (710 for the preamp and maybe 5300 for the stereo amp), and it was the worst electronics I have had in my house in 40 years, that is, beside NAD.
Both components started to malfunction majorly just after a few months (pre-amp volume control having a mind on its own, amplifier was discharging loud every couple minutes).
They both times promised me that they would exchange mine for new, so after agreement, I sent my gear back to them, and they sent it back to me with the same problems... we did that a couple times.... I think the tech guys were billing the department for new units, kept them for themselves, and sent me back the same crap untouched.
I could tell both times that the gear was untouched by adcom as I had marked the units on frames.

I feel like this kind of fraud is happening a lot, especially this time of the year when audio gear dealers offer "black friday deals", but in fact, they sell refurbished units thinking you won’t see anything.

Adcom, dealers selling refurbished as fresh from factory, thoughts?
128x128chrisr
hiphile
32 posts
 
at half the price!
edlchiang62
17 posts
 
213runnin I purchased the GFA-555ms this past July.  I like it very much.

almarg's avatar
Ag insider logo xs@2x
almarg
9,670 posts
 
Geoffkait 12-23-2017
I’m pretty sure Lockheed Martín, Northrop Grumman and Boeing are quite capable of building aircraft electronics.
As a former employee of the electronic systems division of Northrop Grumman I can confirm that this is correct.

Regards,
-- Al
 
geoffkait's avatar
geoffkait
23,365 posts
 
schubert
I thought so too geoffkait. why I put it on here.

Really? It kind of came across like you believed it.
213runnin
914 posts
 
HIphile, thats funny! I actually did take the cover off, don’t tell Adcom, and looked it over. Those are the biggest 15000 uf caps I’ve ever seen, they were flat black and the name wasn't visible.  They didn't appear to be a high end brand.   As for others, I’m not familiar enough with Nichicon to recognize their caps. I didn’t look too closely on the 3 boards, though.

It did look all business in there, though, 8 bipolar transistors and 2 of the big caps per side with a large toroidal transformer.

Edlchiang62, thanks for that. I believe the 555ms and se and probably the same design, while the 565 and up start to employ other circuitry. I’m getting to be a big fan of the 555se.

I’ve been playing it at low level in an effort to break it in. I’ve read that science can actually document electron paths as they form, and caps need this time. At any rate, I’ve been switching up the cables to see if the 555se responds, going from mid level Morrow MA cables, and Silver Stager solids. I can definitely hear the sound getting more open with the silvers and Tress cable.

The Tress is Totem speaker cable, some kind of copper that’s silver plated and is 14 gauge. The two conductors are twisted together for the length of the run. Also, Wireworld Oasis 7 speaker cables. I’m running Ascend Sierra 2 and Totem Rainmakers, which are 4 ohm. Nothing big or even a tower right now, I’m planning on an upgrade in the summer.

Anyway, after tonight I"ll have 12 hours on the Adcom. I’d like to get 50 hours on it at least. Thanks for your thoughts all, I’ll update again when I’ve got more time on the amp.
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