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Do I have tired tubes?

During the summer when I went on vacation I unplugged my Sonic Frontiers Line 1 pre, my Musical Fidelity A3 CD, and Anthem MCA 20 amp. The pre I bought used and was around 2 years old when I bought it just over a year ago. It has the stock 6922 tubes in it. When I got back home and plugged everything back in by bass was a bit muddied and the midbass was a few dB louder than normal. The resut is now boomy poorly defined bass. Does anyone think that the tubes are the culprit? Perhaps they are due for replacement?
cosmic_void

Showing 1 response by dekay

dekay's avatar
dekay
5,383 posts
 
Cosmic:

How long has the system been up and running since your return from vacation?

I sometimes alternate my tube gear and the units that have been setting for months, though less than a year, sound kind of funky for a few days. I don't leave tube gear on 7/24 and power it up for each use.

Seems odd that the tubes or anything else would degrade while being in a dormant state for a few weeks.
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