Valvo Heerlen E88CC 6922 CCa 6DJ8 ECC88 Preamp Tubes Matched Pair - 1962 - NOS

Perfect matched pair of vintage Philips E88CC (6922) audio tubes - Heerlen, Holland 1962 - Valvo Labeled - Strong NOS - Very rare Product Summary The "textbook Heerlen sound" has been referenced in several Soundlumia listings of Amperex Holland E88CC/6922 tubes, and many tube enthusiasts asked what that all means. So this is the answer: the late 1950s and early 1960s tone, the timeless Philips radio tone that many of us grew up listening to, the beginning of over a decade's excellence in sound, the classic tonal template for all the great (and greater) Amperex Holland/Philips E88CC tubes, including this gorgeous Valvo-labeled pair. Valvo was the Philips Germany division. Sound Qualities Made in Heerlen, Holland in 1962, these tubes naturally share all the remarkable characteristics of the "textbook" Amperex Holland house sound. The midrange presentation is transparent, natural and expansive, with a slight touch of warmth that illuminates your music. Bass is deep and well controlle