6922 recommendations for ARC PH7

Wanted to report back on the new tubes. 
To catch you up I bought a quad set of the Phillips SQ and I have now been listening to them for 5 days now and have prob put about 30 hours of actual listening time with at least 50 hours of the tubes running. They sounded great the first day but they are really starting to sing now. Extremely musical. They really made a huge difference on the top with with a very natural and pronounced midrange. Noting is over cooked across the entire frequency range. I have listened to everything from Miles to Zeppelin with zero fatigue. Each Day they seem to get better and better. Either that or I’m just getting used to them. Either way I’m extremely pleased with the SQ. The soundstage is wide and deep and I am hearing a bit more airiness on songs I’m most familiar with. I’m trying not to be very long winded here but I rally could go on and on. I have to say for sure these are an improvement over the Eleectro-Harmonix that came OEM with the phono pre. I’m anticipating that with another 50 hours of play they should be even better and I’m looking forward to that. 
So thanks for all the recommendations guys. I may try a different set later. Maybe the Siemens A-Frames. I don’t see myself feeling groggy enough to spend the coin on the Telefinken CCa’s at $550/tube but you just never know lol. We will see. For now I’m planning on enjoying these for a while. Oh and by the way I still need to do the rectifier upgrade as soon as ARC calls me. I’m on the waiting list foe that which should also be a significant improvement. 
Thanks again 
Till next time 

NOS AMPEREX 6922 jump on them asap.

I think that is the same tube as the Phillips SQ if Im not mistaken. Except for the fact that the Amprex NOS is make in Holland and the SQ is assembled in India. 

the ’sq’ designation on old stock philips/amperex tubes was a labelling signifying highly screened tubes, with linear, strong gain and quietness of operation -- sq stands for ’special quality’, thus sold as premium tubes

it is NOT a location of manufacture designation...

Philips had factories everywhere.
Holland made tubes, were branded as Philips, Philips Miniwatt, Amperex, Dario, RT, Mazda...and having the triangle sign etched at bottom of tube, including tube type and manufacturing dates, noted that they were manufactured at Heerlen factory in Holland. All were the same tube, having the SQ logo or not. In fact some Holland made ones, were branded Amperex, had the PQ logo, that was used for the ones made in USA and having the * sign etched instead.
India made tubes under licence for Mullard, BEL factory same tooling, different etched codes.
So to be sure always check what the etched codes are for finding out which factory they were coming from.