Audio Horizons TP 2.0 Preamplifier

Keep your eyes open for a few German dealers on Ebay. Occasionally they come up with some nice Cca tubes for a great deal. The ones to look for are the early 60's with grey plates. I just got in a pair from one dealer for $150.00(1960 dates) and another pair for $199.00(1962) The later 70's with the silver plate aren't as good, but for locations 2 and 4 in the AH preamp, they work well for me( especially the A-frame model). Also, remember that the stock tubes that Joseph puts in the pre are the EH 6922. Maybe you should pop those in again for a listen. (o:

I got ya will do. I picked up a pair of early 60s here at the Gon for a bit more than you mentioned a short time ago. When i bought my AH i upgraded to Siemans tubes i believe they were e88ccs 6dj8 steel pins. Like you discovered i put the best i have in slots 1 and 3 and use others in 2 and 4. Thanks for the info

I don't know the seller, but he's selling here on the Gon a pair and a quad of Siemens E88cc. The quad is relabeled CBS, but they look like the real McCoy to me. I'd be curious of what the date codes are.

Agreed. Most everyone knows that although Siemens made the E88cc and cca identically, the cca were specially selected for the post office back then.