You could try a new set of tubes or swapping the tubes. I had an 890 and had some issues. Turned out to be a pinched wire during assembly. It was so bad that the it cut through the insulation and was shorting one channel out. The amp sounded awesome but it took a second tech to find the issue.
EAR 890 crackle and hum
Having trouble in having trouble with an EAR 890. It crackles in the super tweeter and hums in the midrange. I have two 890's. One is dead quiet. Placing the second one in the exact spot, same connections, same PC, same tubes and the noise persists. Sent off for service and no issues found. Contacted EAR and virtually no response. I run with an EAR 912 through Tannoy Kingdom Royals. The noise is present when used in single stereo or in mono block configuration. Noise is audible from 10+ feet and is a big distraction. The noise is there with volume off, on low and between songs at higher volumes. Any ideas?
Showing 2 responses by joeinid
drpat, Not sure where you are located, but the best tech I know is Ben Jacoby in Brooklyn, NY. He was able to find/fix problems others missed. http://www.highendaudiorepair.com/ben-jacoby.html |