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Topic: Passive preamp theory? (Read 11240 times) previous topic - next topic
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Passive preamp theory?

Reply #25 –
Quote
' date='Aug 5 2006, 10:25' post='418136']
Opamps are good, quality components, generally.  Especially if you get the "microwave RADAR, milspec" kind.
Some opamps are trash (like the venerable LM741 which has a limited slew rate which is likely to introduce distortion) and some are great. The cheap NE5532 is perfectly good, and moving up from there you get the excellent OP2132 and many others in this range. As you say there are many non-audio opamps which do really well - I built a preamp based on the odd current-feedback THS6019 which is intended to be a DSL line driver.

I really don't understand where the audiophile crowd get their anti-opamp bigotry. Opamps weren't good for audio when they were first introduced, but now (and for the last 20 years) they have offered lower noise, lower distortion and many other advantages over most discrete designs.