Seamaster
Headphoneus Supremus
- Joined
- Oct 20, 2004
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I think he means GZ34. There is no GZ43 that I know of.
Originally Posted by IctusBrucks /img/forum/go_quote.gif Sorry, meant Amperex GZ34.... thought I already fixed that typo but guess not |
Originally Posted by jamato8 /img/forum/go_quote.gif The Amperex is a fine tube. My ultimate preference would still be for the metal base but if there is enough filtering after the tube, you aren't going to notice it. With a CLC I think the metal base would win out. |
Originally Posted by yilmaz196 /img/forum/go_quote.gif Hi guys. Is it natural to hear a very little hum noise from headphones with wa22? I did notice now, didnt notice when i got it in the first time. Very hard to feel, but when i plug out the headphones, i understand it is there. Not a noticable hum when u turn on the amp. This is more thin. |
Originally Posted by yilmaz196 /img/forum/go_quote.gif I tried the stock GE power tubes. There is no hum! Definetely it is the power tubes making this hum. Tungsol 5998's r the loudest hum and 7236 second. Other than this, i realized something today. There is a piece of glass in one of my 7236's. Nothing wrong with the working of tube. I wonder how this got int he tube. |
Originally Posted by IctusBrucks /img/forum/go_quote.gif I've been testing out the WA22 with my Grado HF2 phones lately. So far only tried on the low impedance setting except for 1 test which I'll get to.... With 6SN7 / GZ34 it sounds pretty good, but it sounds a bit underpowered, I have to turn volume up higher than I do with HD650 and DT990. But the amp is still almost dead silent after some time running. With 6SN7 / Sophia 274b on the HF2, the amp is SO underpowered that it's practically unlistenable. I have to turn volume knob to 3 o'clock to get anything out of the amp, and then it starts buzzing like a Beehive after several minutes. It was dead silent until being run at high volume awhile. Strangely, after the amp started buzzing quite loudly on LOW impedance, I turned the volume down to 0, then went to HIGH impedance and turned the volume back.... the Buzz was SIGNIFICANTLY quieter, almost completely gone. No noticeable change in sound. Anybody else with similar findings? Is there any harm is running the Grado HF2 on high impedance to get less noise?? Or would most simply not try to pair WA22/Grado? I think HF2 is 38ohms.... and the WA22 impedance switch is designed so the LOW = anything under 60.... |
Originally Posted by IctusBrucks /img/forum/go_quote.gif I've been testing out the WA22 with my Grado HF2 phones lately. So far only tried on the low impedance setting except for 1 test which I'll get to.... With 6SN7 / GZ34 it sounds pretty good, but it sounds a bit underpowered, I have to turn volume up higher than I do with HD650 and DT990. But the amp is still almost dead silent after some time running. With 6SN7 / Sophia 274b on the HF2, the amp is SO underpowered that it's practically unlistenable. I have to turn volume knob to 3 o'clock to get anything out of the amp, and then it starts buzzing like a Beehive after several minutes. It was dead silent until being run at high volume awhile. Strangely, after the amp started buzzing quite loudly on LOW impedance, I turned the volume down to 0, then went to HIGH impedance and turned the volume back.... the Buzz was SIGNIFICANTLY quieter, almost completely gone. No noticeable change in sound. Anybody else with similar findings? Is there any harm is running the Grado HF2 on high impedance to get less noise?? Or would most simply not try to pair WA22/Grado? I think HF2 is 38ohms.... and the WA22 impedance switch is designed so the LOW = anything under 60.... |