Krell

As long as the power supply caps meet Krell design specs, you shouldn't have any reason to worry. These are power supply caps, not caps in the audio circuit chain. This is really not a big deal or problem. Power suppy caps can be very expensive, especially if the rail voltages are high. The higher the rail voltage, the more expensive the caps would be. So, they probably saw that one channel was damaged and the power supply caps on that side were questionable. So they replaced the caps on that side. If the other side's caps were okay, then why spend the money to replace them? I would have asked the customer if they wanted me to replace them all, which is probably what Krell's Technician did. The customer may have said no due to the costs. If they are quality caps, you would be hard pressed to hear any difference. Same capacitance rating, same or higher voltage rating and you are good to go. Take a quick look to see how much those suckers costs. Say a 33,000 micro farad cap rated at 100VDC. Go ahead and check.

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Hey, if you want to and agree to pay the costs to replace all of the power supply caps to match them, then more power to you. It is very expensive and totally unncecessary. Same quality caps, same ratings, same or higher voltage rating, you will not hear or experience a difference. Take for example a brand new amp, where one power supply cap failed after say... three months. Still under warranty, but the manufacturer got a better deal on power supply caps from a new parts supplier. Same ratings. So, I'm going to replace all the caps? No. I will replace the caps on a particular side only. to expensive otherwise. Understand, I'm talking about power supply caps, not caps in the signal/audio circuit path. Even then, unless I was doing a total upgrade on a amp, I probably wouldn't replace all of the signal caps just because one cap failed. I would install an equal quality or better quality cap, test the amp to make sure it meets spec, listen for any issues and I'm done. Just me, but I think you are making a big deal out of a small issue. But, that's me. Again, on power supply caps, if they were old or showing wear, I would ask the customer if they are willing to spend money to replace them all. I definitely wouldn't replace them all without asking first. Too much money involved.

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