In response to EchoWars, I agree that the safest way is to replace the component with an exact value or one that might be slightly above the value. It should be noted that this method, changing the value, isn't recommended for resistors, disk caps or components in the RF, IF or multiplex circuitry. Changes in the audio path might result in changes to the sonic soundstage as well. The new replacement is not the original part, but a part used in several models. Because the rail voltage was higher on some models the replacement rating was made higher to accommodate a universal replacement. For example, in the 2105 the original caps, made by either Mallory (Blue) or GE (Silver) were rated 40 vDC, maximum Surge 50 vDC. The rails were +/- 35 vDC. In the 2205 the rails are +/- 42 vDC. In the latter case the SOR is only 8 volts less that then normal, maximum operating range of the cap. This doesn't leave much room for operating headroom.
So, in an effort to minimize stocking of several different devices the engineers opted for only one, which has a higher operating voltage. Therefore they can use it for several units. While I am not a design engineer, I question reducing the value simply to accommodate less parts inventory. However, in my years in business and National Service Manager for KLH, I learned that "Engineers Know Best". IMHO, Perhaps they should visit the real world sometime.
