I've owned a Klyne SK-5A for five years. I bought it from the original owner who had never had to have it repaired in 19 years. I haven't either. OK, the "standby" LED is a little dim, and I've had to tighten the fixing bolts on two RCA connectors.
Stan Klyne still offers service for this unit, although some parts are no longer available. If you want to consider other makes of preamp than the one you have, Klyne looks like a pretty good bet for reliability from where I'm standing. They sound nice too.
Stan Klyne still offers service for this unit, although some parts are no longer available. If you want to consider other makes of preamp than the one you have, Klyne looks like a pretty good bet for reliability from where I'm standing. They sound nice too.