I used a BD's Cinemag 3440-A through my EAR 834 P through the mm stage with a Dyna D3 and had no issues.
I still have the SUT if there's any interest.
I still have the SUT if there's any interest.
Phono Preamp Tube Rush
hagtech, In explaining that SUTs can be a source of noise, you wrote, "If they use too thin of wire the resistance gets too high and becomes
the main source of input noise." What??? Where does that idea come from? To begin with, the primary of a SUT is seeing the miniscule output voltage of typically a LOMC cartridge, like 0.5mV of AC, or less. |
I use a Herron VTPH-2 (not 2A) in conjunction with an AT-ART9 LOMC cartridge rated at 0.5 mv, with the Herron's stock tubes and no loading plugs. If I turn the volume control in my system to a setting slightly higher than I would ever use (which is quite loud; some classical symphonic recordings I listen to can produce 105 db peaks at my 12 foot listening distance) the hiss produced by the phono stage is only audible within about 1 foot of the speakers. In saying that, though, I should point out that I believe the Decca London Super Gold cartridge mentioned by the OP is a high output cartridge, and while the moving magnet input stage of the Herron is indeed tube-based its LOMC input stage is FET-based (i.e., solid state). @lewm I believe what hagtech is referring to is Johnson noise, that would be produced to some (not necessarily audible) degree by any resistance. Regards, -- Al |
Those are 2 popular units.,one of which i've tried.-Herron. No noticeable tube rush at "reasonable" volume, from the listening position. If you're expecting SS, absolute quiet during blast sessions,in between cuts-good luck on that. Even the finest at unreasonable volume, have some leve of hiss. Real amplified music is noisy. A Fender or Marshall at idle won't win awards for quiet. |