We have a Marantz 5.1 amp about 9 years old and it has started playing up I posted an earlier thread about the loud crackling / popping noise it was making for the first 30-60 seconds when first turned on. Anyway I have disconnected the TV / DVD from the amp so the amp doesn’t get used. I spoke to the Marantz agent and they recommended I did a factory reset on the amp – which I did, then In the weekend I tried connecting some different speakers (still good quality Wharfedales) and turned the amp on to FM radio and the same thing happened – so is almost certainly a problem with the amp (I very much doubt speaker wire would be the cause) So after discussing things with my wife we’ve got 3 options 1. Take the amp to get fixed The Marantz dealer is not close to where we live and I’d have to take time off work to get there – plus they would charge a fee just to look at it and diagnose the problem and charge for the repair itself and this could be quite expensive – depending on what needs to be done 2. Upgrade and buy a newer amp We can buy a new Onkyo / Pioneer 5.1 amp for under $500 NZ like this one https://www.jbhifi.co.nz/tv-home-entertainment/home-theatre/onkyo/onkyo-tx-sr373-5-1-channel-av-receiver/338976/ we don’t need 7.2 because we don’t have 7 speakers and have no need for 7 speakers – I never use all the functions on the Marantz amp as it is 3. Buy a 2nd hand amp of similar quality to our Marantz Like this one on a popular buy / sell site in New Zealand https://www.trademe.co.nz/Browse/Listing.aspx?id=1640132713&archive=1 it’s only $185 NZ do you think the amp is worth repairing, or should we upgrade or replace the amp?