It's not just a shorter wire. They are two different gauges of wire entirely. The high output has finer guage wire and waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay more turns.
I agree on the Opus3. I've got the high out. I can't really see the point of getting a low out since, as Wolfie says, the inductance in either case is already so low.
Speaking to the high output: I can't believe what Grado was capable of doing with the bog standard bonded elliptical and aluminum cantilever regarding how it sounds. Tracks great, does everything I can think of on my list superbly well. I haven't heard the 3 series Prestige cartridges but it leaves even the 2 series behind which left the 1 and the 0 series way behind. I can't see a retip bringing more to the table except for longer wear that a line contact will give you. I have taken it off my table and put it on again and again. I don't want to believe what I'm hearing and I would like to know what fundamental changes Grado made to get this new trick out the old dog. I've heard all the Grados there are to hear and this one sounds like they do after a high quality retip. Could it all be just because of the maple body?
I grabbed mine off of ebay. Somebody, who for some inexplicable to me reason, decided not to keep it and put it up with a ridiculously low BIN. My thumbs jumped to action and bought it before my brain even comprehended what I was seeing on the screen. I didn't start as I usually do with low expectations, either. I was very satisfied with the 2 series and I was expecting more of the same, which isn't a low expectation at all.
I put a record on and my jaw dropped. The highs are so clean and detailed, the mids are always the Grado mids, and the bass is actually tight. Grado went after the issues of their cartridges with a surgical knife and figured out exactly what the problem was. The question now to me is how to fight upgraditis. I'm not usually one to do that, but if what I have is just the Opus 3, what does the next one up sound like??????????????