Audio Horizons TP 2.0 Preamplifier

Gammajo,

Look forward to your thoughts on tube rolling the AH. I figure since this is the eventual route for me I am trying to get some sources together.

Please PM me or anyone on this board on this. Very much appreciated.

Hey Everyone !

When you pop the top for tube rolling,
or for plain visual curiosity, listen with the metal lid off for a while (hours) and tell me if there's a difference to your ears ?

I'll tell you my impressions after I hear yours, just to confirm if I'm not crazy !

Thanks

I would be curious to hear Victor's or Joseph's view on popping the top as well. Obviously, removing the top would be to eliminate vibrations, so why wasn't this issue looked at by Joseph in his initial design? Wouldn't taping some anti-vibration( dampening) material on key locations of the inside of the top be accomplishing the same result as removing the top? I haven't yet taken the time to try mine with the top off.

I have been listening to the AH pre with Amperex Bugle Boy tubes instead of the tubes sent with the unit - Siemens Gold Pin. After a couple of hours I like the Amperex's very much indeed. The highs are a tad sweeter and the mids a little more full. The bass is not as deep and powerful.

Stage size and fullness of sound seems much improved with the Amperex's. May have lost the last bit of clean/transparency however.

I will need to listen more. The Amperex Bugle Boy tubes can be had on Ebay for about 1/3 the cost of the Siemens and to my ears sound very musical.

I will listen more.

I also placed an order for the Herbie Audio Halo tube dampers and Myrtle wood blocks.

Bill

Amperex Bugle Boys are a classic. I'm not surprised you might prefer them to Siemens if you like a slightly colored sound.