There’s a website with all of their legacy products, including updates. Here’s the link: [url]http://www.arcdb.ws/D150/D150.html[/url]
And here’s a link to the manual if you don’t have it: [url]http://www.audioresearch.com/ContentsFiles/D150_Manual.pdf[/url]
I still have my Dual 75a amp that I bought new in around 1975. It’s not in use right now, but i kept the packing, have the original manual, such that it is, along with a period era price list. I owned several pieces of their gear in the ’70s and ’80s and remember a friend who had the D-150. Quite an amp for its time. No idea how it stands today or what it would involve to bring one up to spec or better. I know that there are some folks that upgrade and restore old ARC. Perhaps someone else can chime in on the tubes- I bought a fresh set of the big tubes from ARC for my D75a before the company got sold. I used to have constant calls with Leonard in service-- a pleasant, somewhat laconic man-- when I owned an SP 10 mk ii. That rascal was a fabulous preamp for its day. Plagued by tube microphony issues. You own a piece of history.
And here’s a link to the manual if you don’t have it: [url]http://www.audioresearch.com/ContentsFiles/D150_Manual.pdf[/url]
I still have my Dual 75a amp that I bought new in around 1975. It’s not in use right now, but i kept the packing, have the original manual, such that it is, along with a period era price list. I owned several pieces of their gear in the ’70s and ’80s and remember a friend who had the D-150. Quite an amp for its time. No idea how it stands today or what it would involve to bring one up to spec or better. I know that there are some folks that upgrade and restore old ARC. Perhaps someone else can chime in on the tubes- I bought a fresh set of the big tubes from ARC for my D75a before the company got sold. I used to have constant calls with Leonard in service-- a pleasant, somewhat laconic man-- when I owned an SP 10 mk ii. That rascal was a fabulous preamp for its day. Plagued by tube microphony issues. You own a piece of history.