Up for consideration is a new SHURE SM57 dynamic mic, upgraded with the AMI TR42 boutique transformer. This is a Cathedral Guitar exclusive -- as we are the only dealer offering the AMI T58 transformer upgrade on a new SM57 -- which catapults this workhorse mic up several notches, bringing it in line with the highly coveted vintage SM57 Unidyne III. So here is a great opportunity to get this supercharged dynamic mic for a very modest investment!!!
HI -RES PHOTOS:
HERE for 1270 DPI Hi-Res photos of the AMI - upgraded SM57, and
HERE is official info on the 57 from Shure, and HERE is some additional info from Recording Hacks which discusses the AMI mod (scroll). Here is some more SM57 info and AMI T58 user reviews [ 1 | 2 | 3 | 4 | 5 ]
The T58 transformer has been around for a few years, and there are several DIY mods for installing the transformer upgrade -- one of which involves boiling the mic (!!!) to remove the old transformer. Rather than having to experience that, we are offering a professional mod service (work done by Avenson Audio) where you get a brand new mic professionally upgraded by experienced audio professionals. Also, the AMI logo is laser engraved on the front of the mic, so you will always know which one is the "good one." Transformer upgrades to your existing SM57/58 will be available shortly.
UNIDYNE III SOUND
The vintage SM57 Unidyne III actually used a good transformer back in the day, but in order to keep the SM57 sales price fixed at $100 for the past several decades, the manufacturing operations were moved to Mexico, and the original stock transformer has been replaced by a low cost transformer with inferior sound. This has caused the resale price of the Unidyne III to catapult over $200 for a 30+ year old mic. We solve that problem by offering a brand new mic with the proper high-quality transformer, to resore the SM57 to its former glory.
CLASSIC 57 SOUND
The classic SM57 is a workhorse mic that can has been used on probably billions of records!!! It is a universal mic that does practically everything well, and you can make a record with just this mic if you have to. The AMI transformer mod brings this mic back to the way it originally was, a high-quality, great-sounding, affordable dynamic mic.
AMI / SM57 FEATURES
* Polar Pattern: Cardioid
* AMI T58 Transformer
* 40-15k Hz
* Impedence: 200 Ohm
* Engraved AMI Logo
* Connector: XLR
* Studio or Stage use
* Mod by Avenson Audio
* Mic Clip, Box, & Case
AMI, Inc. is becoming world-renowned for making audio transformers the old
fashioned way. Using vintage winding machines, AMI designed their T58 dynamic mic output transformer with the same construction techniques used on
historic Neumann U47 tube mic transformers. The result is a
transformer that provides enhanced clarity and dimension throughout the
Many of today's top high-end mics use AMI transformers.
SHIPPING & TERMS
USA shipping is $15.00 via FedEx Ground, with tracking, Insurance
and Signature Confirmation. Satisfaction Guaranteed, with a 3-day
return, buyer pays shipping, so please ask questions first. This auction is for a new Shure / AMI SM57 mic, mic box, clip, and flight case.
PLEASE CHECK OUT my other pro audio gear in Current
eBay Auctions, and check out some
of my vintage mics that have Sold on eBay.
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