I cannot comment on the Legacy speakers as I have never heard them. But, I own a Spectral DMC-20 Series II preamp and a Spectral DMA-200 power amp. The Spectral gear is on the "detail" side of the detail vs. musical spectrum. With the Spectral preamp, the Spectral amp is incredible. It is veeeerrrry fast, but it is not grainy. If you go with a Spectral power amp, you need to drive it with a Spectral preamp to realize its full potential. The gain in fidelity is not additional, but rather geometric. I would not (personally) buy a DMA-180. When the 180 came out, it was touted by Spectral as being far superior to the 200; it is not. The 200 is the only full class A power amp Spectral made (except for maybe the 90?). People sold their 200's to buy the 180 per Spectral's advice. Many of these same people then turned around to sell the 180 and try to get a 200 back. I love my 200; the only problem I have had with it was a drift in the bias (occured bad enough once in 8 yrs that I had to send it back to Spectral). Before I got the Spectral preamp, I was using an old ARC SP6C1 preamp with the DMA-200. The tube preamp was actually less open, more harsh, with a bloated bottom end than the Spectral preamp. The Spectral preamp was much, much faster and smoother, so much so that the entire sound of my system was tonally different. Spectral is an investment because of the need to have matching equipment, but it is a worthwhile one.