This Marantz 2230 vintage AM/FM receiver has been fully serviced by a qualified tech. Both drivers boards have been re-capped with new high quality capacitors and some transistors have been replaced to insure a clean warm sound. The DC offset and bias has been adjusted to specs. The pots such as volume, bass, treble and balance controls have all been cleaned with professional electronic cleaner for scratchy free operation. The dial lamps have been replaced with new custom made dual LED's and the vellum dial diffuser paper has been replaced and now has a deep blue color that is beautiful in person. I have spent a lot of time on this unit getting it to this condition. This unit now needs a new home. Due to the age and vintage electronic nature of this item no warranties are implied.