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Hi Kevin,
So far I am very satisfied with both the sound quality and quantity of your driver in my current setup. However, the phono preamp I will soon complete building has a higher gain than the one I am currently using. Additionally, I have a uncompleted line stage project that, when completed, will introduce yet more gain.
My question is to whether with this increase in gain I could expect any audible improvements by reconfiguring my input transformers (LL1544A) from 1:1+1 to 2:1+1.
Best.
It's always my advice to use the lowest input transformer ratio that is commensurate with your overall system gain. If you can manage the gain for 2:1+1, then I'd advise using it.
Kevin Carter
K&K Audio
www.kandkaudio.com
Kevin,
So I recently switched over to the high impedance setting a couple weeks ago. Three observations:
1) The gain sacrifice is not incredibly apparent. I'm certainly not missing anything.
2) There is an increased sense of headroom and spacing.
3) The amps has more attack (or sounds slightly "faster", if you will).
Do these results conform to what should be expected?
The only other modification I performed was to add small-value teflon/foil bypass caps across the Jensens. This seemed to increase the HF transient resolution (cymbal decay, tape hiss, LP surface noise, etc..), but I could obviously be imagining things.
I am using new-production Gold Lion KT88s.
The only other change I am considering is going UL for the sake of comparison. If I do that, I'll post what I think.
Thanks for all the assistance thus far. The board just sounds better and better!
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