This is an introduction to the 6-string ukulele for those who are not familiar with that style of uke, as well as a quick sound sample of the Ohana TK-70-6 model that has recently gone through some upgrades. The Ohana 6 six string now comes with a solid spruce top, solid mahogany back and sides, as well as a slotted headstock (which I think is very cool).
It’s a very good sounding six string, an very competitively priced ($260) when compared to other similar ukulele models. It’s a little more mellow sounding than what you would normally expect from a spruce top, but that may have something to do with the strings it comes with being a little richer and less bright than an Aquila brand string.
The six string ukulele is not like a guilele (small guitar like uke). It still retains the tuning characteristics of a four string uke (G C E A), but has courses of strings (sets of 2) for the C and A string. The C has a standard C string and another that is an octave higher, and the A has the standard A with an octave lower wound steel (with nylon core) string. The dual strings are positioned close enough to eachother that they can both be fretted with one finger, similar to a 12 string guitar.
These courses of strings give the six string ukulele a very robust and full sound when strumming chords, but also provide a fuller and richer tone when finger picked or played melodically. Definitely worth checking out if you are looking for a different sounding uke to add to your collection, or are in search of a little more volume and fuller tone.
Solid Spruce Top!
Dual C and A strings.
New slotted headstock.
Solid Mahogany back and sides.
Wound lower octave A string.
Fan Guitar and Ukulele Blog 
Wow…what a cool instrument. I hadn’t encountered this before. The dual strings and the octave tuning give it a really wide tonality compared to traditional instruments. Thanks for sharing this!!