If you're not sure why this makes such a difference then maybe you should go to Shure's website and read their educational publications. The 545l... Is a bad ass mic. I like the tab modded 57. So I got the 545s today. This would have more of effect on sound than variences in tolerance (comparing domestic to domestic, import to import). Seen Paul Butterfield use this mic on many gigs. They've been produced continuously from 1960 up through the current production model (Shure Unidyne 545 SD) available today. Give it a few more years and the Beta 57 will come down to $100 and there'll be a new product line. When you buy products through links across our site, we may earn an affiliate commission. I came up musically in the 60s. Above is the Shure 545. As well as the great transformerless 57. Hey there! Don't have any verification of that. Take an old one apart and look. Although it sounded OK, I much prefer an Audix I5 or an SM57. The Beta 57 is a supercardioid mic, unlike the SM57 and 545. It's a black plastic on the 545's (and relatives) and metal on 57's. Interesting. Their early 546 advertising was where the idea of "selected" came from. I vaguely remembering reading somewhere that a SM57 was a selected 545 that was painted black. This is almost a hidden industry secret, but, it seems Bob Ohlsson has had an experience similar to mine with this mic if you read his posts. All of mine definitely sound extremely similar, yes. You need an account to post a reply. Most of us in that band had played in several bands prior, but, had not had the vocal tone, clarity, warmth, balance, evenness and smoothness, that we were able to achieve with the 545s in any of those previous groups. That's right - Shure still makes the Unidyne III 545, they never stopped as far as I know - and while it is related to the SM57 in many ways, it's clearly not the same mic. 545l is a different beast. Am I wrong here? My 545s sound mellower than my 57s; they seem to have less of a bump in the mids. ↳   5/03-2/05: Off-Topic / Off-Color / Off-the-Cuff, ↳   5/03-2/05: Musicians Wanted/Available, ↳   5/03-2/05: Producer/Engineer and Studio Job Listings, Difference between Shure 545 and the Sm57, Re: Difference between Shure 545 and the Sm57, https://paulrubenstein.bandcamp.com/album/one-eye-awake. This topic has been covered before, but none of the old threads ever arrived at definitive answers. Recording geeks have come up with all sorts of interesting sounding theories about the difference between the Unidyne III and the SM57, mostly attributing the sonic difference to Shure switching manufacturing from the USA to Mexico in 1985 (or 1975, depending on who your source is!) I REALLY miss that mic. I wanted to come back and chime in. To give this my own test, I just scored a couple of vintage Unidyne III 545 mics for $40 out the door on eBay today, and I am eagerly awaiting them in the mail. Yeah, I don't have a current production 545 (aka. Vocals, guitars (mostly amp'd, but sometimes acoustic), snare, kick. The 545 uses an all copper voice coil, which makes it a little heavier than the SM57 coil. I've noticed the new ones have the transformer potted much more heavily than the Unidyne in your pic. Create a username and password below and an account will be created and your post entered. The old 545s had metal bodies. They DO all have different sounds, but when it all comes down to it, it's just Shure tweaking and repackaging the same mic in different product lines throughout the years to make more money. They've been produced continuously from 1960 up through the current production model (Shure Unidyne 545 SD) available today. BTW a good way to listen to all these is to check out "youtube" videos of various performers. I've never used one newer than the early '70s so I have no idea what they turned into after that. Is the EV 635 a "forgotten" vocal sleeper microphone? Just a friendly reminder that political discussion, (including "offhand" and 'sideways' commenting) is. I've had more musical experience through the years now and have had the privilege to work with and own some of the best studio mics manufactured, but, when it comes to live sound vocals, lead or harmony, the 545 is one of my overall top choices for most voices I've had the opportunity to work with. The 545 was indeed a predecessor of the SM 57, and it was in the lineup until recently.