Linn LP 12 hum not coming from Bryton phono stage.

Thanks for the replies, the cartridge is a Linn K9 MM. I did move the table to the other end of my double wide equipment stand. It definitely hums when playing music - which kind of stinks because my digital system is dead quiet. No WiFi or routers are nearby.

I will have to check and see if it hums while the RCA's are connected but the power cord is disconnected.

I will be taking it in to get an upgraded (Radikal, Akurate chassis) power supply and motor later this summer. It will be interesting to see if this eliminates the hum.

@daveyf  - I'm glad to hear you say that the Bryston Phono stage is really good. I don't have much to compare it to other than the one in my old NAD pre-amp. The gain on my MM only stage is a bit lower apparently than is should be because on some records I have noticed a need to turn the volume control up quite a bit higher compared with my Sony XA-5400ES SACD player or my Wadia -171i iPod dock.

@lewm  - I have noticed that occasionally the hum increases after the turntable has been running for a bit. I mean when I first turn on the turntable the hum is barely audible. By the end of the first side of music, it starts to become intrusive.

I had already planned to update the power supply for the supposed improved sonics and the ability to play 45's.

Update on my path to quieting my phono(Linn Sondek LP12 w/ Bryston BP-2 MM is overdue...

I returned from Ann Arbor Michigan where I had taken the turntable to Overture Audio and Thomas O'Keefe there did a fantastic job doing a whole bunch of upgrades on it. I lost the Valhalla power supply and now have the Radikal power supply. I went all in and have the new Karousel bearing installed on a Greenstreet Audio (Keel copy) CNC milled aluminum subchassis. I got the "Adikt" MM cartridge to replace my aging K9 cartridge.

When I hooked it up, it still hummed!

So I contacted Gary Dayton with Bryston and he said that I need a "Y" connector to go from my BP26 preamp to Bryston Power supply. When I first hooked it up it started making a police siren sound! I freaked and had to power the system down since the police siren noise was increasing in volume.

I had to take a time out and go out and do some yard work as I pondered what to do next....

Update to follow since I am at work right now and my laptop is about to die....

Thanks for your interest @noromance  & @daveyf .

I had a hunch that the Maze Audio Krell cryo power cord that I had running to my Bryston BIT-15 power conditioner from the wall might in some way be contributing to the wild "siren" sound loop that went nuts when I turned on the phono input. So I put the stock cord back on. The wild shrieking sound mostly went away, then after a time it appeared to completely dissipate.

The "Y" connector taps into the umbilical power cord that runs from my Bryston outboard power supply and BP-26 preamp. It does appear to that everything is operating normally now. My tonearm cable has not one but two grounding wires which are both connected to the Bryston phono stage. Other than RCA interconnects from the phono stage to the BP-26 preamp I do no see any option for an extra ground wire to be run between the 2.

Yes Thomas tested my LP12 for hum and it actually had NO hum issues before or after the installation of the Radikal power supply and motor upgrade. Right now I'm just beginning the process of listening to a bunch of my old and new vinyl records. The sound quality is really, really wonderful so far. I am out of practice with my vinyl care and have lots of questions. I'll probably continue to write about my experiences with all of this. Strangely, with the Adikt cartridge twice now at the end of the record, the stylus just kept on going and skated right onto the paper disc in the middle. I did use the tonearm lift quickly both times so hopefully the stylus is not damaged by this.