Dunlop Manufacturing :: Strings :: :: Heavy Core 7
I was given a set of these and couldn't wait to try them. They're pretty much a standard 10 set with a slightly beefed up A and E string (38 and 48 respectively) and a 60 gauge 7th string. The wound strings feature the larger diameter cores used in the Heavy Core brand.
The 60 feels like it has the tension of a 62 or 64 without the extra girth. Although the A string at 38 is especially tight, the progressive gauges 38-48-60 feel awesome and the 60 holds up to Bb tuning very well. IMHO tuning it down to a low A would be pushing it.
I find the tone to be similar to my trusty D'Addario XL and EXP strings, perhaps with a little more fundamental punch. Can't comment on longevity yet, but I'll try to remember to pop in and report on how well they do.
If these last as long as any other non-coated string -- which I expect -- these will certainly become my go-to 7-string set.
Cost is $6.49 from Musician's Friend.
5 Dios of a possible 5 Dios, pending results of the longevity test.
I've been using the Dunlop Heavy Core sets for about a year now. Immediately I noticed less time to break them in and definitely more punch in the way the note blooms or growl in the light palm mutes for example. They last about the same as D'addarios and I really like how they feel too.