I own a 4 string and a 5 string. Very nice basses. I love the chambered body's...very lightweight. The necks are very comfortable and I love the 19mm string spacing. I happen to really like the electronics in these basses. The slap tone is great and the solo'ed bridge pickup tone is unique, great fingerstyle burpy tone. The two I purchased were both made in the USA and I had a few conversations with Jack about these basses. He is a very enthusiastic person that loved his creation. I wish these basses were still being made.