Ever since I got my WOO WA6 on high impedance setting (100 - 600 ohm) I have a clear low hum through my Beyers T1 v2. I tried rolling tubes and rectifier, I even got a new amplifier under guarantee, but nothing seems to help. The only solution is to switch the amp to low impedance setting (10-99 ohms), then the hum is as good as none existent.
Is this normal for this amp, or is the combi Beyer T1 - Woo WA6 just not a great one?
Ever since I got my WOO WA6 on high impedance setting (100 - 600 ohm) I have a clear low hum through my Beyers T1 v2. I tried rolling tubes and rectifier, I even got a new amplifier under guarantee, but nothing seems to help. The only solution is to switch the amp to low impedance setting (10-99 ohms), then the hum is as good as none existent.
Is this normal for this amp, or is the combi Beyer T1 - Woo WA6 just not a great one?
I have the Woo WA6 first generation and use Beyer DT-1770 Pro (among other hp). Your combination should be fine. Because tube rolling has no effect and because the low frequency hum is almost nonexistent at the low impedance setting, I suspect an issue with the output transformer. It may not be fully secured (grounded?). Call (e-mail) Mike Liang at Woo Audio.
I have the Woo WA6 first generation and use Beyer DT-1770 Pro (among other hp). Because the low frequency hum is almost nonexistent at the low impedance setting, I suspect an issue with the output transformer. It may not be fully secured (grounded?). Call (e-mail) Mike Liang at Woo Audio. (P.S., the T1 / WA6 combination should be fine).
Hi Jonathan, thank you. I've been corresponding with Mike a lot to solve the issue. It came to the point that they replaced mine with a new device. Strange thing is, that before the Woo I had a Schitt Walhalla 2, and had no hum complaints whatsoever. So I doubt it's a ground issue. I do start to think that in my case OTL might be the way to go.
But I do find it interesting that you don't experience hum, so it might have to do with my electrical system in house after all...
Hi Jonathan, thank you. I've been corresponding with Mike a lot to solve the issue. It came to the point that they replaced mine with a new device. Strange thing is, that before the Woo I had a Schitt Walhalla 2, and had no hum complaints whatsoever. So I doubt it's a ground issue. I do start to think that in my case OTL might be the way to go.
But I do find it interesting that you don't experience hum, so it might have to do with my electrical system in house after all...
I might add that my WA6 and all other components are connected to a Furman Elite 15-I power conditioner. Some form of power filtering may be beneficial to your system. As an OTL aside, I do own the Woo WA3 (discontinued )…tremendous with high impedance hp (DT1770, Senn HD600, ZMF Auteur) and 12AT7 tubes on adapters!!!
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)…tremendous with high impedance hp (DT1770, Senn HD600, ZMF Auteur) and 12AT7 tubes on adapters!!!