FiiO K11 disassembly - modding

[Anatolii_A]

Hello ! Just bought K11 dac/headphones amp, here is board photo with some measurements. There are 18 regulators, with 2 independed amps for 4.4mm phones. First of all I don't like polymer caps in analog circuit, and already swiped one op amp to opa1656. Maybe the pictures will be useful for someone to repair

 

[Anatolii_A]

First of all, I think it will be good to make linear power supply. What do you think about it needed to be regulated or not with such amount of regulators onboard ? Maybe powerfull transformer 9V, diode bridge and 4700uF will be enough for it ?