What opamps do people recommend?
"Comparing OPA828 to OPA2604, which was felt to synergize well with Aiyima T20, was an illuminating experience. If one assigns OPA828 sound as neutral, OPA2604 seems to synergize well with certain components due to its seeming effect of moving a tiny bit of upper-midrange to low-treble energy to high treble, which results in very airy sound with a degree of forgiveness in the hot-recorded upper midrange. This can be very pleasing with many digital sources and class-D amps. OPA828 fights back with more information and neutrality in that upper-midrange to low-treble, minus extra airiness, making music more solid and textured in that area.
Definitely worth checking out both OPA2604 and OPA828 in a given circuit, as one is likely to be more synergistic than the other"
"OPA627. This one fills in most of NE5532 sins of omission in resolution while building out a little more density of tone, vocal liveliness and sparkle. Still not the last word in detail resolution, top-end air, or bass crunch but good enough in most of these areas as not to detract from enjoying one's favorite tunes. Most of all, the sound signature is instantly familiar and comfortable from years of exposure to the sound signature in various gear and DIY efforts. Two OPA627AU's adapted to DIP board can be found at reasonable prices and still a viable choice."
