Somehow I missed mentioning the 300 series. These are probably my favorite Levinson amps. Huge external sinks and mechanically they are dead quiet.
Aside from a horrible capacitor failure rate, the 331/332/333 are more reliable and due to the larger form factor, cooler running than the models before and after. Good news is the Levinson specified UnitedChemiCon replacements show no reliability issues. The next generation 334/335/336 were slightly quieter and used different output transistors but many of theme still had the bad caps. We stock the UCC caps and before anyone asks, no one is allowed to sell Levinson parts to end users.
Are the UCC's specific to Levinson or are you referring to other parts?