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Replace a 0.5 mV Grado Reference Sonata 1 for a Dynavector-DV20X2-H 2.8 mV ???

I'm using an Oracle Delphi mkII, with a Rega RB-300 arm (modified), wired with Discovery's lockable interconnects, into a 2 box Audion pre-amp (built in phono stage) using 4 Siemens E88CC 6922 tubes.

Lets start with the Grado hum (which I may add IMHO the support at Grado was virtually "Zero").                          

The hum is faint, but still audible, especially considering that with tax & installation the better part of a grand Canadian went out the window; so lets just say the hum is totally unacceptable. Which is too bad, because outside of the faint hum & gutless gain (more on that to come), it's a flippin nice sounding cartridge.

The other beef is that my set-up guy selected the wrong Grado to pair with my Audion pre-amp. Apparently the Reference Sonata 1 came with either a 4.8 mV gain, or a 0.5 mV gain. His reasoning was that the 0.5 would be quieter, and it is, but the problem is I have to turn up the volume to 3 o'clock to get the gain I want.

Qu #1: Does anyone out there know the specific gain difference in % between a 0.5 moving iron Grado & a 2.8 MC.

Qu #2: Anyone ever experience "HUM" with a Dynavector-DV20X2-H 2.8 mV on a Rega Tonearm?

Qu #3: Does anyone out there have experience using Dynavector-DV20X2-H 2.8 mV with a tube pre-amp? What are your thoughts?


 

 

 

 



thehorn

Showing 3 responses by thehorn

thehorn OP
111 posts
 
Sonata 1 Matt M,
great input, some real relevance to your reply, but I'm a bit uncertain with your reponse - " I own both these cartridges ".
Buy that do you mean a Sonata 1 & a  20x2 (low) or, did you mean Dynavectors....10X5 (high) & a 20x2 (low)?

Thx for adding that you're using a Manley Chinook. I've heard people's issues with tubes, so that's covered.
Are you using a Rega arm?
thehorn OP
111 posts
 
yogiboy

Where did you find the preamp has an input sensitivity of 2 mv? I’ve been looking.

As far as Grado is concerned, let me reiterate what I wrote in my post.
"(which I may add IMHO the support at Grado was virtually ZERO)".

I called Grado, gave them the skinny on my situation, & they said that the new Sonata was coming out & an exchange is out of the question. Also, the new Grado will likely hum with the Rega arm as well, so why don’t you go buy the Dynavector.


thehorn OP
111 posts
 
Thx Yog,

There's more info there than there is in the owner's manual, LOL.
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