Yeah, I actually had to read that twice in the original post before I caught on. When he said "phone inputs" he was talking about what many would call an rca connector or an rca chassis mount socket.
Buffer amp no gain
I would like to put a buffer stage between volume control and power amp to ensure impedance matching. I like the look of the First Watt B1 but don’t need the volume controls.
My volume control is a passive ladder type with expensive resistors, silver wired etc
So my question is, can I buy a buffer with phono inputs and outputs but no volume pots. Either valve or solid state is OK.
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It's PHONO. UK phone connectors are similar to a Ethernet jack with pins on the side. See https://en.wikipedia.org/wiki/British_telephone_socket Autocorrect? |
Bumpy had "phono" in his original post. The use of "phone" in my post was either an auto correction or more likely the result of a brain to finger malfunction. @larryi - Thank you for the link to information about transformers. I have tried transformer volume controls and was not a fan, although I could see the appeal as they have a smooth sound. Transformers are also used by some preamp/amplifier manufacturers on the input/output sides of things as they can offer benefits related to impedance matching and galvanic isolation, can be used to convert balanced signals, and can add about +6dB gain. The SMc mods to my TLC-1 preamp (now buffer) included Lundahl transformers on the output side, the same as used in their VRE-1 preamp. In addition to their already well-regarded line of transformers, Lundahl offers two higher level (or at least more expensive) transformers - one wound using Cardas copper wire and one wound with silver wire. My TLC-1 has the Cardas wire version as the silver was quite expensive. I never thought about the contribution of those transformers to the sound of the preamp so your linked article was quite interesting to me. |
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