I recommend using Peerless mic transformers as step up devices. Or perhaps a custom transformer in Mu metal from David Slagle.
HOWEVER, I caution people about referring to "strengths" of a cartridge. The LYRA MC line is so balanced and revealing that it can be both blessing and curse. Some folks like more romantic sounding cartridges with more mid-range bloom. The LYRA is very accurate and not very tolerant of "just getting it close" when it comes to set-up. IMHO, larger elliptical styli are much more forgiving when it comes to set-up. Don't fret though, once the LYRA's are set-up properly they stay that way. So IMHO, they are not at all a finicky cartridge - especially after only 40-50 hours of break-in. They "lock in" and just sing their little butts off!
Again unless someone sets up MC cartridges practically for a living, very few people are qualified to adjust azimuth "by ear". As with everything there are exceptions and exceptional people BUT test equipment is the ONLY way to obtain truly objective information. These LYRA cartridges are NOT simply "adjust the body to mechanically level" and forget it! I have heard these cartridges when they are "slightly off" on azimuth and they seem "just OK". Whereas when properly set up they transform into a "most bang for the buck" value in MC cartridges nowadays.
The Argo i is a GREAT cartridge - I'm just not certain it is worth the extra loot over the Dorian. To me it just gets to be a law of diminishing returns but if you can afford it - God bless! So to me I deem it sagacious to invest the difference in price in a better step-up device, TT stand, plinth, tonearm or even the TT itself. I witness too many sound systems with too many other limiting factors in them to ever indict a LYRA or a Soundsmith re-done MC cartridge as the culprit.
In general, Audio "systems" are a HUGE system integration endeavor - many variables. Therefore it is very easy to simply focus on one or only a few things and vary them to counteract the shortcomings of the others.
