I recently purchased a near mint unit, primarily for the phono section. The unit has the original tubes, very extended,clean and quiet. ARC recommends their replacement tubes only. System could stand a little more tube warmth. All opinions are welcome and apppreciated.
Pondman, If the originals are sovtech as I had in my arc I found a big improvement with amprex bugle boys and mullards both will give a warmer more natural tone. The mullard has a litle more treble extension. in my system(a little dark) I prefered the mullard.