OK, so I just bit the bullet on a Parasound HCA-3500 amp. These things are beasts! I am picking it up from the original owner and it looks brand new. Here is my question. I know about checking the AC Polarity and the R-44 resistor swap for the Holco 47k resistors, which eliminates the harshness on the top end, but I am considering a full upgrade of the capacitors and many of the other internals from Big Sky Audio.
http://bigskyaudiomt.com
They replace resistors in the input, biasing, and feedback circuits along with replacing all the inexpensive generic capacitors installed by the factory with audio grade types. I am seriously considering the Rubycon Black Gate Caps at an additional Cost. Typically they use the Nichicon Muse KZ. Are the Rubycon's worth it?
Here is my dilemma, are the AC Polarity check and the R-44 Resistor Swap enough? I have heard it gets rid of the edginess of the top end. These I know I can do myself. Am I going to notice THAT much of a difference on an already awesome amp with the addition of the Big Sky upgrades?
Thanks in advance for your opinions!
Don
http://bigskyaudiomt.com
They replace resistors in the input, biasing, and feedback circuits along with replacing all the inexpensive generic capacitors installed by the factory with audio grade types. I am seriously considering the Rubycon Black Gate Caps at an additional Cost. Typically they use the Nichicon Muse KZ. Are the Rubycon's worth it?
Here is my dilemma, are the AC Polarity check and the R-44 Resistor Swap enough? I have heard it gets rid of the edginess of the top end. These I know I can do myself. Am I going to notice THAT much of a difference on an already awesome amp with the addition of the Big Sky upgrades?
Thanks in advance for your opinions!
Don