PV10b, PV12, PV14 Sonics & Input Impedance?

[greg77543]

I'm considering one of these preamps. I have 2 questions:

1. Is the input impedance of all 3 at least 30Kohms? I have a DAC with a high output impedance. The impedances aren't listed in the manuals and a search here didn't turn up anything

2. Sonically, would it be 14>12>10b ? Which of the 3 is the most euphonic (all else being equal, like using the same NOS tubes with all 3)?

[roberto]

Hola and welcome Greg,

Usually, the line out impedance of a DAC is from 100 up to 600 ohms, and any CJ preamps will have no issues with it and will provide the CJ signature quality sound.

Tube rolling is an user's option, my recommendation is to have a listen and choose the one that suites the best for your liking. Me, I have an ET-7, and I am using a Genalex Gold Lion gold pins 6922. I do like a lot the harmonic texture with the best signal to noise ratio, wide stage and truly sense of 3D. Very dynamic with great bass performance.

Happy listening!

[admin]

First, welcome to COJ. Great to have you with us.

Agree with Roberto. Impedance won't be a problem. Tube roiling will change the sound, for better or for worse is going to be personal preference.