1%. How can I tell. Well I replaced the stock tubes with NOS Sovtek's, I heard 2% improvement in cleaner image, sharper/more detailed. Hey 2% is 2%, it was worth it.
The Hovlands should give 1-2% better image. Whats the problem? Is that un-realistic?
The Hovlands should give 1-2% better image. Whats the problem? Is that un-realistic?