MC transformers - what do they sound like?

Raul- since you use a custom preamp I have no way to verify your results. How much gain does your preamp have? Have you plotted a distortion versus gain curve for your preamp? Have you plotted a noise versus gain curve? I would be interested in the results.

Sorry Raul I chekced your system description that gives 85db of gain and a signal to noise ratio of 82db. Is that across the bandwidth?

Dear Gregadd: Yes, across the bandwidth. Btw, We do some changes on our phonopreamp design/parts and now we have the " final " one I will write the update info about. Stay tunned.

Regards and enjoy the music.
Raul.

Dear Gregad: This is a quick resume of some info about my phonopreamp:

- In reality our phonopreamp have three preamps instead of only one:
it has and MC phono stage, it has a MM phono stage and a line level stage
preamp. All this three stages are totally independent from each other. We don't do any compromise, the
MC and MM
stages are very critical and needs to be independent.


- Our design is a Zero-feedback ( no overall and no local feedback ),
direct coupled, pure class A , true balanced input to output, dual mono
design and fully regulated input to output with dual external power supply.

To round off the preamplifier's RIAA capabilities, we have introduced a
switchable 3.18 us turnover point to compensate for the cutting head
preemphasis roll-off.
There is also a low-cut filter designed to remove unwanted rumble
frequencies, selectable between DC, 16 and 32 Hz.

- RIAA eq. deviation from 20 Hz to 20 Khz: 0.02 db
Frequency range to: DC to 2 MHz.
Clean gain: Adjustable to 100 db
Signal to noise ratio: better than 82 db

Regards and enjoy the music.
Raul.

Sounds impessive.