I also owned a pair of 645s and while I liked them I wasn't as over the moon as some. For the retail price they are good value, but even better value are the Boeringer-Graebener ribbons you can buy new on uBid for around $1500.
To my ears the Newforms lake life and sparkle and the listening height requirements are a little severe for my liking.
To my ears the Newforms lake life and sparkle and the listening height requirements are a little severe for my liking.