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Rain on the parade

Posted by bobwire on January 1, 2017 at 18:27:01:
I used these op-amps in my Sony NS9000 and Classe'534 pre-amp. Both of those units were highly modded. New caps, low temp-co resistors all matched. The biggest change was adding 6800uf to the power pins of each IC op-amp. Sockets let me change out op-amps easy. I had a lot of op-amps to try in those days, one was the OPA-2132. With the power mods they have no sound of their own except for a dark character to the over all sound. They seem fast, with the highs you want and tight bass, but still dark. I replaced them with LM4562's and thought that I had reached Navona. The sound was brighter, like someone had turned on the lights. Now, I could see into the music and the way to the back. I have gone on to change all op-amps in my system to LM's, including my Emovita DAC and Classe' Ten power amps. These both have major power supply mods. I no longer use an analog pre-amp, as my system is all digital inputs now. Like I said, the opa's are OK, but the LM's will blow them away. Good Luck, bobwire