MC Transformer or phono stage - help anyone?

You will never know about certain things until you try them in your system. For 199.00 K+K Audio has a transformer step up kit which you can set up 5,10,or 20 times. Even with a grado sonata with 1.5 mv output and about 48db gain phono pre, in my system, the sound was very undyanmic and had little bass. I stepped it up 5 times to 7.5 and it was a whole new ball game. It was more dyanmic and full bodied than my grado reference/reference with 4.5 output and no step up. In theory 1.5 mv and 48db should be fine but it sure liked 7.5mv alot better. In the worst case you would be out 199.00 in your present system, but you would always have a step up device in the future, for various cartridges and or pre amp changes.

Enjoy Tom

I just installed an old "The Head" stepup (precursor to the EAR MC-3) between my 0.6 mV Koetsu Red Standard and CAT Ultimate pre. Just a fantastic improvement with more dynamic and tuneful bass among many other things. This brought back what went missing from my analogue when I swapped out a Rowland Coherence One for the CAT last year.

If you have a lowish output MC and an all-tube phono stage (with a few exceptions) a stepup or head amp would likely be the way to go. This will likely "open up" the sound considerably, reduce any tube noise that the phono stage may generate, and allow you to keep the gain knob at roughly the same position for line and phono sources thereby avoiding nasty surprises when switching between sources.

I have no first-hand experience with the NuVista M3; I think it has a tube preamp section. Also, depending on how it is measured, I think the Ruby 2 cartridge output is closer to 0.3 mV. I suspect a stepup WILL give you what you are looking for. Go for something basic first and just remember to plug it into your MM (not MC) phono input.

By the way, optimal impedance loading for the cartridge at the stepup is usually different from that at the preamp. You will have to research what this is for your Benz and shop for your stepup accordingly. The stepup likes to see 47K at the phono stage (ie MM).

Thanks to everyone who read and responded, the help is greatly appreciated.

If I understand what everybody kind of said it depends on if it is an issue of gain and the quality of the preamp. I like the preamp a lot for cds but understand that low output mc are even more critical of the preamp. If it is an issue of the preamp quality then the phono stage would be the way to go. If it is an issue of gain then transformer. Does this make sense to all of you. From what I have heard the benz stage is unlikely to be a major upgrade, I wonder about the hegtech trumpet (which needs a transformer) or the 47 lab phono cube. Any comments would be greatly appreciated.

TWL
your comments are always helpful but I'm not sure how to tell if it is just a gain issue. I like the preamp a lot for cds, the volume is turned up about half and the measured gain in the stereophile review was 70.5 db which should be enough, the impedence was 37.3 though I thought it was to be 47 in the manual.

Albert

I will try to adjust the vta a bit, I appreciate the advice. I am not sure I can adjust how it is loaded. Any suggestions. I know you have a wonderful phono stage and wonder if you have any thoughts about a very good stage at a reasonable price (what is reasonable in this world).

Marakenetz

the pass was one of the units I gave thought to but size may be an issue as it would attract substantial notice from my loving but only so tolerant wife. I gather though it is one of the best out there.

Herman

Your comments mirror my confusion. I saw your io and gave thought to it but was too slow (and I wasn't sure just what I should do). Did you prefer the io to the pass and if so why?

Tom yours makes the most financial sense, and likely the easiest and least to lose.

Kleech the nuvista is a tubed preamp, ss output. As far as I could find the resistance of the benz i 40 ohms (from a listener on the audio note transformers). Is this what I need to match?

Again many thanks, you are a big help and I think bringing some aid to my confusion

Gary

From my experiences, 70.5db total gain in the phono stage and linestage combined will not be sufficient for a .4mv output cartridge. I am using a cartridge with the same output, and I have 86db total gain. I am maybe a little too high on the gain because I am at full volume at about 10 o'clock on the volume knob. But I think you'll need at least 80db total gain and maybe even a little more than that, for that cartridge. If it is true that the cartridge gives only .3mv, then you will need 85db total gain, because that was perfect with the last .3mv cartridge that I had on my system. From what you described, I think you need more gain in the front end.