We have an update with warranty reactivation policy. We also offer options- higher performance capacitors and resistors. We've had these options for decades, they are easy enough to hear.
We prefer to do the work on the amps so that we know its done properly and so can stand behind it if there's a problem. One customer sent us a preamp that had been 'updated'... whoever did it left a rat's nest of flying wires and parts inside the preamp, causing us to have to write an estimate to repair the preamp.
If you are having someone do update work, it is in your best interest to google as much as you can about them so that you know they are doing good work. Some, like Jim McShane who does excellent work on Citation 2 amplifiers, are easy to sort out and others might seem pretty obscure and might be cause for concern.
BTW, a few hints: hot melt glue to hold parts in place is not acceptable! Terminal strips cost a few cents; there is no excuse for parts flopping around inside! The updated work should look like it was born there.
We prefer to do the work on the amps so that we know its done properly and so can stand behind it if there's a problem. One customer sent us a preamp that had been 'updated'... whoever did it left a rat's nest of flying wires and parts inside the preamp, causing us to have to write an estimate to repair the preamp.
If you are having someone do update work, it is in your best interest to google as much as you can about them so that you know they are doing good work. Some, like Jim McShane who does excellent work on Citation 2 amplifiers, are easy to sort out and others might seem pretty obscure and might be cause for concern.
BTW, a few hints: hot melt glue to hold parts in place is not acceptable! Terminal strips cost a few cents; there is no excuse for parts flopping around inside! The updated work should look like it was born there.