A few interesting developments with my DV332:
- got my new pair of WE403B. My old pair definitely had a constant whine. The new ones eliminated this.
- however, I still get intermittent whine. When I tap the amp or tubes it goes away. The last time, tapping one of the Svets stopped it.
- after reading this thread (http://www.head-fi.org/forums/f5/any...79/index3.html
), I decided to check out Herbies dampers. The hope is that they will cure the intermittent whine. Any positive changes in SQ is gravy. Otherwise, I'll return or sell to another Head-fier.
- another thought is that I need to clean the contacts on my swapped tubes.
- in anticipation of my Herbies arrival, I removed the stock tube covers. I took a listen with them off and definitely heard a buzz/hum. After some testing, I realized that it was my Airport Express causing the problem (my AE sits underneath my DV, about 6 inches below with a wooden shelf between). Covers back on, no buzz. Covers off, buzz. And the buzz only came during the computer delay when I hit Play and the music started playing.
- Solution? I thought this was quite ingenious. A piece of aluminum foil folded to the size of the DV and placed under (between DV and shelf). No more buzz!
- FYI: I still have cheater plugs on my DV and OMZ DAC.
I detail all of this not to suggest a faulty amp or suggest against anyone else's purchase. I really love the sound out of the DV, and am willing to do these little gyrations to eliminate any final barriers to bliss. And maybe a future owner will have a AE too close and a piece of foil can help...
Best-case scenario: The Herbies will fix the occasional whine (and possibly improve sound). Keep the foil. Remove the cheater plugs. Tubes are clean. Bliss.
Worst-case scenario: Herbies go back. Keep the foil. Keep cheaters. Clean tubes. Occasionally have to tap a Svet to eliminate whine. 99% near bliss.