REPRICED, PENDING DECISION ON CONTINUATION
10th of December 2024
As of December 2024, all standard MC PROs have been built after a run of over 2 years; a successful outcome and good ending point for the project. Considering popular demand, there may be a small run of units made in the first half of 2025 for UK-based users (or less likely, global market). Following sufficient demand for moving magnet and high-output moving coil front ends, coupled with an ever-clearer picture of the superiority of high-output types and the deficiencies, liabilities, and origins of low-output cartridges (to be fully expanded upon once conclusive), it is possible that all products for low-output may be discontinued due to misalignment with the company's principles.
Having sold a substantial quantity of MM and MC stages direct over the last couple of years, there is a very strong pattern of exogenous noise and setup-related issues pertaining to LOMC types that correlates inversely to output level, while all the measured objective test evidence I've seen so far shows inconclusive variation between the tracking performance of these compared to high-output types. All the historical material, dating back to the 1940s, for the popularity of low-output points towards the greater ease of manufacture with coil lower winding count, when an input transformer would be mandatory for both low and high types as a result of the voltage noise/gain limitations of contemporary valve-based input circuits.
This is a 'sacred cow' in the audio industry that no-one seems willing to challenge, probably due to the ubiquitous esteem it enjoys, quite despite cartridge manufacturers themselves publishing identical frequency range and channel separation characteristics for high and low types alike, which would certainly tend to deviate from each other if the claims of increased inductance and mass effects held true water. It is therefore highly likely that the incremental differences in moving mass are swamped by production tolerances. I would warmly encourage you to make your own observations and keep an eye out for unfalsifiable statements in favour of either variant.
If you've not selected an MC cartridge yet, might I recommend using a high-output type, such as Dynavectors DV-10X, DV20X, or Hana MH which have proved to be every bit as good as the AT cartridges, and use the MM Pro in the 52dB gain setting instead. It's also substantially lower cost + allows you to use normal MM cartridges, many of which are very good. Ultimately, it's important that the chance of success is maximised in any situation containing unknown variables. If I were in your position, with what I perceive your budget may be, I would go with the Dynavector DV-20 X2 (2.8mV version) + MM Pro at either 42dB or 52dB (depending on the sensitivity of the rest of your setup) and call it a day. You'd have a bit to spare for a conical MM for those worn discs + mono switch.
Now standardised in black for £25,000/€70,000/$30,000 direct from Classic Audio Ltd.