I took one of our songs we already recorded, made a copy of the protools file, and did the new soundchecks on the copy file, so I could quickly toggle back and forth between our existing, recorded tone, and the new tones I was getting. Back to back
My old signal chain was a speaker cab with a Vintage 30, a SM57 and a Sennheiser e609 blended, straight into the built in preamps on my Mbox, into protools.
The new signal chain was the V30, but using a SM57 or my new SM7B, into a Presonus Eureka preamp, into protools.
First I compared the SM57 to the SM7b. Upon first listen, you can really tell that the SM7B picks up a wider range of frequencies than the SM57, in a much flatter manner. I don’t know how else to describe the difference other than the SM57, after many listens, almost starts to sound like a caricature of an electric guitar sound. Wierd, I know. But the SM7b picks up the spectrum across the board, and you can hear alot more high end detail in the chords. It’s a much less fuzzy sounding mic, that’s for sure.
Next, I ran the SM7b and the SM57, separately, thru the Presonus. Now, I fully realize that the Eureka isn’t a $2K world class all tube channel strip. That being said, the difference that I heard was immediately noticeable. The guitars sounded richer, more even, less sterile, but with much more top end detail. The individual notes in chords rang out much clearer.
I guess the moral of my story here, and to anyone like me who is struggling to get a good guitar tone by plugging a SM57 straight into an Mbox, would be that quality mics and preamps cost more money for a reason. They sound noticeably better. I’m glad I made the decision to upgrade, because I think that the guitar tones on my songs in the future will just plain sound BETTER.
That is all…










