kray
HE>i
Hey all,
I am really enjoying my MP-301. I installed RCA 6SJ7 preamps and I've been trying Tung Sol 7581A's. I have some Gold Lion KT77's on order. I do have one question. It seems to me, if it's not my imagination, that recently I have to turn the volume up more for the same sound level. I always leave the amp's volume knob at 12:00 and adjust the sound level with my phone. I stream Tidal through a Google Chromecast Audio into a Parasound DAC via Toslink and control actual sound level with the Google Home app on my phone. Seems like until recently I got plenty of volume with the volume slider on Google Home app set to between 10 and 25%. Now it seems like I have to put the volume slider to at least 50% to obtain the same sound level. Could there be an issue with the amp or with a tube? Of course the 7581A's (which have about 55 hours on them now) are glowing. Can't tell with the RCA black cans (which have around 90 hours on them).
Any thoughts on this would be appreciated.
Are you testing the same songs. I find some Tidal music is really low volume, especially "MQA" titles?