Audio Horizons TP 2.0 Preamplifier

I put a ec 88 in slot 2 to have balance. Contacted my tube man and as you guys know the cost of ccas is well, a sellers market. I hope to hear from him tomorrow.
I have made so many changes that i think i need a good nights listening to get my bearings.
Gammajo but as far as i can tell with a short time with out the rings i believe more air and a delicate sound. I had a hard time finding a difference with half cca and ec 88 to.
Like Sherod said if we could just leave well enough alone. but nooo we have to experiment and try different things.

La45,
According to Victor, the new wiring harness has a lot to do with the looooong break in.

For the technically-minded, the new output caps in the TP 2.1 upgrade are 1uf value. These are bypassed with a .22uf Solen cap to tame down the highs a bit. The TP 2.0n had a 4.7uf Hovland. I find this interesting as this value difference might make a difference in matching to input impedances of certain amps. Perhaps Victor will expound on this.

I use balanced in and outs on my 2.1 upgraded preamp. I understand in my version Joseph puts some more money into the XLR jacks. I think he builds in some sort of balanced transformer in each channel. I have to check on that. I also noticed a nice improvement using the XLR's as I also own AH RCA IC's.

That wire harness is long from the front of the unit to the back. The new chasis 2.1 has a much shorter cable as the volume knob is connected to a rod which reaches far back into the unit.

I may try my NOS Mullards tonight!

Bill

Sherod, are you finding the voices are recessed in relation with the rest of the music? This is what I heard. The mids were pushed back.

Your experience is valuable to me because we own amps with essentially the same design.

If the presentation of the mids/voices changes for you, then it would possibly encourage me to give the TP2.1 another try.