Beckman Tubes - Head-Fi: Covering Headphones, Earphones and Portable Audio

musicman59 · #1 (**permalink**) 04-03-2008, 08:24 PM

Does anybody know who is the actual manufacturer of the 12AU7 tubes branded as Beckman?
Thanks.

edisonwu · #2 (**permalink**) 04-03-2008, 10:49 PM

Many of them are Amperex made

Von Soundcard · #3 (**permalink**) 04-04-2008, 12:51 AM

What about the 6080 with the same brand ?

kevin gilmore · #4 (**permalink**) 04-04-2008, 12:57 AM

I have a few of those and mine are telefunken. Diamond
in the base. Likely Beckman bought whatever they could from
wherever they could and tested and graded the tubes themselves
for the low noise applications the tubes usually ended up in.

musicman59 · #5 (**permalink**) 04-06-2008, 12:38 AM

I received the tubes. The just say Beckman made in USA and some codes.
I installed them in my RP-7 Lite with a thin silicone ring at the level of the top getter. They sound very good even better than the Amperex Bugle Boy I have.
The bass is fast deep and tight. The midrange is sweet and the highs are airy and well defined. The soundstage is pretty good and they have great dynamics.
I bargain for the $40+ I paid for them