Hello,
I built an RCA BA-2 pre amp with 2 channels using Mullard ef37a tubes for the inputs and RCA 6j7 tubes on the outputs. I also used a pair of Altec 15095a transformers on the input and Carnhill vtb2290 transformers for the outputs. It sounds good, but I want to try a different set of output transformers as I want to see if a 5:1 15k primary type would perform any better than the 4:1 9.6k Carnhills. I narrowed it down to either a Sowter 1367 or UTC A-25.
I was going to go the Sowter route but not sure I want to wait that long to receive them. I emailed them asking for a an estimated delivery time but have not heard back so I’ve been looking at the UTC A-25s for sale. My question is do you think I’ll miss some low end with the UTCs? The Sowter has a better low frequency spec at least for the 5k source they state. The inductance seems competitively high on it as well at 100H. I think the UTC is 40H. I also wonder about the quality of the 1367 I would get now that Carnhill has bought Sowter and whether or not they have been able to replicate it.
Any help/info is appreciated.
Thanks,
Matt
I built an RCA BA-2 pre amp with 2 channels using Mullard ef37a tubes for the inputs and RCA 6j7 tubes on the outputs. I also used a pair of Altec 15095a transformers on the input and Carnhill vtb2290 transformers for the outputs. It sounds good, but I want to try a different set of output transformers as I want to see if a 5:1 15k primary type would perform any better than the 4:1 9.6k Carnhills. I narrowed it down to either a Sowter 1367 or UTC A-25.
I was going to go the Sowter route but not sure I want to wait that long to receive them. I emailed them asking for a an estimated delivery time but have not heard back so I’ve been looking at the UTC A-25s for sale. My question is do you think I’ll miss some low end with the UTCs? The Sowter has a better low frequency spec at least for the 5k source they state. The inductance seems competitively high on it as well at 100H. I think the UTC is 40H. I also wonder about the quality of the 1367 I would get now that Carnhill has bought Sowter and whether or not they have been able to replicate it.
Any help/info is appreciated.
Thanks,
Matt