I liked the Amperex 6922 White Lable PQ best but the price is getting up there!! There is a pair(just run the good tubes in the circuit your using and the EH's in the other sockets) of NOS Amperex USN-CEP 6922 for $250 on AudioGoN now. These are very good low noise, closely matched triodes and a great sound although not as lush as the WL PQ's.
I tried Amperex 7308 PQ's but the top of the Ray 168 started to get warm so I pulled them out. The heater current of a 6922 is 300ma, the 7308 is 335ma and 6dj8 is 365ma, personally I would stick to the cooler 6922's.
As I remember it the outside sockets are the RCA's and the interior sockets are the bal.
I tried Amperex 7308 PQ's but the top of the Ray 168 started to get warm so I pulled them out. The heater current of a 6922 is 300ma, the 7308 is 335ma and 6dj8 is 365ma, personally I would stick to the cooler 6922's.
As I remember it the outside sockets are the RCA's and the interior sockets are the bal.