@chinook9, There are 7 film caps in there. The two on either side of the chassis appear to be the coupling caps. The two towards the front of the chassis appear to be doing additional filtering for the input tubes, they are tied to what appears to be a ground buss bar across the front of the amp.
The 7th cap appears to be on the power supply. The biggest improvement will be on the 4 coupling caps. Next would be the two caps acting as filters for the input tubes. Also agree with bigkidz though. If you add really good caps, they are likely to be 30-60 bucks each, and will quickly approach a significant portion of the amp cost. The amp appears to be made by same factory that makes the RFTLYS amp. good build quality; only a small notch down from the factory that builds the Primaluna and Cayin amps.
Have you tried any different output tubes? give the shuguang Nature sound series black glass a try. they sound quite good.
The 7th cap appears to be on the power supply. The biggest improvement will be on the 4 coupling caps. Next would be the two caps acting as filters for the input tubes. Also agree with bigkidz though. If you add really good caps, they are likely to be 30-60 bucks each, and will quickly approach a significant portion of the amp cost. The amp appears to be made by same factory that makes the RFTLYS amp. good build quality; only a small notch down from the factory that builds the Primaluna and Cayin amps.
Have you tried any different output tubes? give the shuguang Nature sound series black glass a try. they sound quite good.