Luxman SQ-N150 Integrated Tube Amplifier

We changed the tubes in our SQ-150 from the JJs to Telefunken preamp and Mazda of France power tubes, took a good sound to a great sound. We only stream, through a Luxman N-150 DAC and Melco music server feeding Altec A7-8 VOT speakers. Power is not a problem in the 18’x22’ living room. 1/4 volume yields 80+ DB. Luxman does not recommend tube rolling but a friend who is long time high end audiophile, suggested the tube swap, and he was spot on.

"It’s just clear to me that Luxman puts little R&D into their phono stages which is truly sad because they obviously make beautiful integrated amps." 

"The reason I was interested in resolving this phono gain problem is because I absolutely LOVE the sound of this little Luxman sq-150. The sweet, beautiful tone, soundstage and bass are absolutely world class using sensitive speakers like the Volti Razz." 

"We’ll just accept that the phono stages in the Luxman’s are what they are. Thanks to all"

@rankaudio Points taken.

I’m pleased to report that I own a Luxman MQ-38uC amplifier and a Luxman CL38Uc preamplifier and I have no difficulty with volume when using my turntable, a B&O Beogram 4004.

One other thing to consider:  Stereophile’s measurements of the Volti Razz was 93 db, vs the Volti published 97 db.  Still more efficient than most, but that’s a pretty big difference.  I wouldn’t put that amp with a speaker under 95 db (e.g., the Klipsch Heresy 4 someone else mentioned measured just north of 95 db according to Paul Miller at Hifi News).