I've never compared Jeff Rowland Model 5 with McCormack DNA-1 but I had owned and compare Model 5 with Mark Levinson No. 23 and McIntosh MC-162. So, my answer is just to give you an idea how good Model 5 is. JR Model 5 has really good detail and quickness like ML23 plus it presents the music with more air, texture, and tube-like than ML23.
Other than that, build quality of jeff Rowland amps are First-Class.
Hope this would help!
Other than that, build quality of jeff Rowland amps are First-Class.
Hope this would help!