6922 / E88CC PHILIPS SQ NOS Gold pins
The Philips SQ E88CC (Special Quality 6922) tube is an incredible vintage NOS tube. Made in Heerlen Holland on India in the late 1960's, these tubes are labeled "SQ" which indicates 10,000 hour life rating. They feature A-frame grids and gold pins. This tube is low noise making it suitable for nearly any preamp/phonostage application. Sound-wise, this tube is very musical with great extension. It's balanced from top to bottom, excellent soundstage dimension.
