MC transformers - what do they sound like?

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.

Dear Gregadd: Well, this is a mature phonopreamp design, part of our 10-12 years of hard/fun working about: testing and hearing, testing and hearing, etc, etc.

We use the best pasive and active parts ( not necessary the more expensive ones ), other than the desing it self we take care all over the whole " instrument ( phonopream ): our ultralow noise circuitry was specifically designed for very low output moving-coil cartridges. The outstanding CMRR of 120 dB at the input stage will reject any interference not present at the audio signal generated by the cartridge, ground plane design , ultra low noise power supply ( better than an alkalyne battery, at least in our design ) that is solid " steady " one: it has more than 40,000 uf of capacitance , bullet proof whole circuit protection, four layers circuit boards, very precise ( almost perfect ) circuit board lay out, good design execution, extremely trusty operation, no internal wires where the signal pass through ( every component is direct soldered to the circuit boards ), etc, etc, etc.. We don't left nothing to " destiny ".

Our phonopreamp had some " old/new " ideas, examples: all the best preamps use at their volume/attenuator a serie's resistors ( it does not matters if they choose doing through relays or ladder attenuators design ), at least two por volume position, in our design the signal pass ONLY for one resistor at any attenuator position.

Our design is a Current Drive one and this allow that the volume control attenuates the audio signal and the stage noise at the same time, resulting in outstanding signal-to-noise ratios and dynamic range.

Our whole design permit to have a preamplifier combining
the purity and transparency of a passive preamplifier with the speed, dynamics and drive of an active preamplifier.

What happen when you hear through our phonopream: SS signature? Tube signature?, not at all, only real music with all the music emotion.

Through our phonopreamp we have not only a different musical experiences but a new emotional one that we never experienced and that we even don't know it could exist in any audio system at any design/price.

Yes we are extremely proud of what we achieve over those working years.

Regards and enjoy the music.
Raul.

Wow, Raul- Not only impressive, but I would love to hear one in my system. When do you go into production ;~)

I think Raul should build a prototype and send it to me for evaluation.