[blue_lammer]

I ordered a HD2 and I plan on doing some opamp rolling. Based on these two threads there were two recommendations: 2x OPA2604 + AD8022 and THS4032 x 3

I was wondering where is the cheapest place to get a SOIC8 - DIP8 for Canada? I know brown dog sells them for 2.39 each, is there anywhere cheaper to get them??

For the 3x THS4032 it was recommended to put a 1.0uf Film capacitor in between pins 4 and 8. Is there a specific brand, tolerance or capacitor electrolyte that is optimal for audio? I noticed that it was a "suppression" type capacitor. Is this just to make sure that there is a constant voltage supply to the chip?

Additionally what is the best soldering method for ICs? Some use solder paste, some dab it on, others use drag soldering. Any recommendations? Thanks.

 

[majkel]

Last reports from my friend say the OPA2228 replaces the OPA2604 in its place with a better result. He uses the AD8599 at the front stage.

 

[blue_lammer]

Cool thanks majkel. I just checked digikey and they list two versions: 5 and 10 microvolts of input offset. Which version should I buy, the one with tighter tolerances costs almost double the price.

Anyone know about which film capacitor I should buy?