Cleeds - I very much agree with you. I have not dealt with ARC service since Mr. Johnson has been gone, but I suspect they can still service anything they ever made (if you pay enough). Also I thought the use of printed circuit boards was fairly common these days. All equipment has problems, but I always thought ARC used high quality components. My Father's Dual 51, Dual 75 and SP3A are still around from when he bought them in the early 1970's. Although they have not been powered-up in years, I bet they still work.
My Audio Research experience
To all you goners out there, here is my experience with Audio Research.
Approximately four years ago I purchased an AR Reference 75 power amp. It was on special at the time and I bought if from a dealer in Brisbane, Australia.
I used the amp for the rear channels of my home theatre system which I only use occasionally because I travel a lot for work and I mainly listen to music.
One night I switched the amp on and a white flash and burning smell came from the amplifier and it didn’t power up. I thought it may have been a tube, and because I had no spares, I reported the problem to my Brisbane dealer and via email to Audio Research. A copy of the reply sent from AR on the 5th March 2016 follows:
'Thank you for choosing Audio Research and the REF75. I suspect you had an internal tube arc. The internal tube short can also take out a plate or screen resistor. So just replacing the tube will not fix this problem. The resistors also need to be replaced. You can confirm this by checking the bias for this tube. If the bias reads zero, a resistor is open. This is an easy repair that our distributor in Australia can do.
The SE update for the REF75 comes with a complete new set of tubes including a new set of KT150s. This is the only way it is sold. If you so choose, Our Australian distributor can also install this SE upgrade for you while the amp is in for repair.'
I then proceeded to order some more tubes to see if a replacement tube would fix the problem.
I ordered the following tubes:
2 x Electro-Harmonix 6H30Pi Gold with Matched Triodes (Balanced)
4 x KT150 Power Vacuum Tube - [Matching (10+ tubes)]
4 x KT120 Power Vacuum Tubes - [Matching (10+ tubes)]
When they arrived, I tried the new tubes but they didn’t fix the problem as the amplifier failed to switch on. I then contacted my dealer and freighted the amplifier to Brisbane for repair. This was done in June of last year. I included all of the above tubes in the package in case they were needed. I also would have liked the amp to be upgraded to SE status using the tubes supplied if possible.
In September/October last year I enquired about the status of the repair and before Christmas enquired again. After again emailing AR, I was contacted by the Australian Distributor who told me that the service agent in Brisbane had been trying to get parts for the wrong amplifier and that the amplifier would be transported to Melbourne for repair. I asked them to get me a price for the upgrade using my tubes.
In January/February of this year, I was contacted by the Australian Distributor and had to supply proof of purchase because there was a dispute over whether the amplifier was in fact under warranty when the fault occurred. I again asked about getting the upgrade using the supplied tubes which were still with the repair agent in Brisbane. Eventually I was told that I could have the upgrade using AR tubes only, for the heavily discounted price of $3,000 Australian. Nothing like gouging your customers!!!!!! Especially when I could have bought a small car for the original cost of the amplifier in Australia.
I chose to just get the original amplifier repaired under warranty which I was told needed a new main circuit board. This week my amplifier finally arrived back home after nearly 12 months away for a repair under warranty. The original tubes have been put in a box with ‘Faulty Old Tubes,’ written on the box. The tubes I sent with the amplifier have not been returned, and no replacement tubes have been included.
I am amazed that the initial fault destroyed six tubes, so I have asked how the Distributor tested the tubes to determine that they were faulty. I am now left with an amplifier that doesn’t work and 10 expensive vacuum tubes missing somewhere in Australia. I am also left with a conundrum, if when I finally get my tubes back and use them to ensure the amplifier works, what happens if it doesn’t. Will AR then blame me for any fault that occurs on power up because I haven’t purchased tubes from them at their heavily marked up prices????
For me I will never touch another Audio Research product for as long as I reside on this planet. I will be telling all my audiophile friends and putting this report on every forum that will publish it. Best of luck for the future Audio Research and may you drown in your policy mess!!!
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This conversation is running a bit off the rails, but I’ll try to clarify my philosophy about vacuum tube circuit design and construction approaches before checking out. It’s only one man’s opinion … Take a Thöress phono stage and an ARC phono stage to your most highly recommended tube amp technician and ask them which they’d prefer to service. One of these products will outlive its maker in terms of serviceability and the other one won’t. One could argue that the product should always be serviced by the manufacturer – all well and good as long as they’re in business and in the same continent as you. Of course, people will line up on both sides in terms of how they view their investment. I tend to think in terms of heirloom quality, but I think you knew that ;-) In the linked photo, it may be difficult to make out the circuitry, but the Thöress is using tag strip construction - a close relative of turret board construction. The implementation is some of the most beautiful and robust I’ve ever seen. In the old days, this would have been called instrumentation grade. Much of this has been lost on us as circuit board construction has been adopted for cost savings and ease of manufacture by lower skilled, lower paid workers. http://www.theaudiobeat.com/highend2013/highend2013_thoress.htm There are plenty of discussions on the sonics of circuit board construction vs. vintage construction methods (point to point, turret board, and tag strip). There are subtle differences between point to point and the other two traditional techniques, but for the sake of this discussion, let’s think of all of them as “traditional”. The key sonic discussion points center on the significance of the added capacitance in the circuit board (the fiberglass/epoxy). Some will argue that the added capacitance is insignificant, and others will take the opposite stance. The other frequent discussion point is that with a circuit board, you don’t get to choose your “wire” (the circuit board traces). Think about this, the next time you ponder a $2K interconnect. From a maintenance perspective, if the manufacturer goes out of business and the circuit board blows up, you’re out of luck. Not so with traditional wiring techniques. I have no way of reliably fact checking the two contradictory comments below, but even if ARC can service every product they’ve ever made, I want to point out that I’d recommend taking a product’s construction methods into consideration, as circuit board construction would compromise a company’s ability to service it. cleeds wrote: perfectpathtech wrote: Note that I have no commercial interest in either Thöress or ARC, but I use these two products as examples of two highly regarded companies who embrace polar opposite construction philosophies. Cheers, Thom @ Galibier Design |
thom_mackris Take a Thöress phono stage and an ARC phono stage to your most highly recommended tube amp technician and ask them which they’d prefer to service. One of these products will outlive its maker in terms of serviceability and the other one won’t.There’s really nothing to argue about here, because Audio Research products have already outlived their maker. ARC founder William Z. Johnson died six years ago, yet ARC will still service his SP-1 preamplifier, which was introduced in 1970. The few ARC products that the company can’t fully support are CD players, where parts for the mechanisms are no longer available. All of its amplifiers and preamplifiers can be serviced to original factory spec, or better. Please feel free to verify this with ARC directly or any ARC authorized dealer. ARC service is legendary. That’s part of the reason why the products retain their value on the used market so well. Thom, I understand that you don’t care for electronics that rely on circuit boards, and you’re certainly entitled to your preference. But to extend that preference to conclude that ARC products aren’t serviceable flies in the face of the facts. |
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