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Building micpre with Jensen 990 / API 2520 style opamp blocks

Forums

Well, I'm trying to plan my electronics projects for the summer, and I have a nagging impulse to build some high quality mic preamp's. I've been using console pre's on my A&H or whatever I can borrow at the time, but I want something good. I'm thinking clear and clean would serve me best, but maybe some flavor too.

Original ELA M 251 vs new 251?

Forums

Fletcher, maybe you can shed some light on this for me. I'd like to know what the differences may be between the telefunken elam 251 and the lawson and sounddelux "replicas" I'm not looking for a "which one sounds better" comparison but what might some of the electrical or mechanical differences be. are these new ones exact copies ? are they improved ? ya know, what gives?