Yes , check the bias on the KT150s is on point , additional expense I appreciate however pre 1990 production S Petersburg reflector 6h30- DR make a significant upgrade in fidelity compared with the ARC supplied later production tubes
Audio Research or Luxman?
I recently acquired a 1973 Luxman L-507 integrated amp only to learn that the volume/balance control pots are bad and can't be replaced, but I was able to bypass the pre-amp section and run it with the amp section only, and oh my, did it sound good.
I was very surprsed to find that its sound quality came too close in sound quality to my ARC separates: a Reference 3 preamp and Ref 75SE amp. So now I'm wondering how a modern Luxman like a l-505uXii or 507uXii would compare with my ARC separates.
Any thoughts anyone?