KwEa manual says 4000 Ohm, going to assume that the little E.B. is about the same. Somehow 2000 to 4000 Ohm cans work with a lot of the early stuff, Think some things like the BC-348 had a option to use 200 or 3000 Ohms for the headphones but may just be imagining that. You know how it is, you get old and the brain isn't what it used to be. Think the BC-342/312 had a first and second audio output and one was also high impedance but that may also be a hallucination. Ray F/KA3EKH -----Original Message----- From: [email protected] <[email protected]> On Behalf Of David Stinson via groups.io Sent: Friday, November 17, 2023 6:56 AM To: ARC-5 <[email protected]>; milsurplus@mailman <[email protected]>; MMRCG <[email protected]> Subject: [MMRCG] German Receivers- Audio Output Impedence? Does anyone know the audio output impedance of the German Torn E.B. and FuG 10 receivers? I've been told that many of them have open audio output transformers because of connecting incorrect headphones or even speakers to them. Thanks, 73 DE Dave AB5S ______________________________________________________________ Milsurplus mailing list Home: http://mailman.qth.net/mailman/listinfo/milsurplus Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html