How important is ext. adj. for cartridge loading


Hello Folks,

A New Phono Preamplifier will soon be introduced - MSRP around $1750 - $2000

A small "focus group" questionnaire - On a Phono Preamplifier how important is it to you that MC cartridge loading is adjustable from the front panel of the amplifier? How often do you "fiddle" around with loading ? Enough to warrant the cost increase, probably about $200 for the additional switches faceplate machining etc. pricing the preamp towards the higher end of projected price?

Same goes for MM/MC switching Would external selection be preferable to a internal Jumper setting ?

Is a MUTE function desirable on the front panel as well?

MC loading is at 100, 220, 330, 500 Ohms and 47K Ohms, do you think these are OK or would you like other values?

We have designed the unit so it can be used as a fully differential unit as well with one balanced input and one balanced output, you'd need two of them for stereo, do you find this desirable? Would you prefer this mode of operation to be selectable from the outside (switch on back) or would internal jumper selection be enough?

Thanks in advance for your thought on these questions

Peter
128x128pbnaudio

Showing 1 response by swampwalker

Hi Peter-
I pretty much agree w Viridian.
Front panel switchable loading for MC would be great.
If X-former MC, then I would recommend post for easily
insertable resistors to set loading precisely.
Internal jumper for balanced/SE (or maybe rear panel
toggle switch)
I personally do not need nor do I envision needing 2 or
more phono inputs, but a rear panel switch for
mm/mc OR separate input jacks for mm and mc is good.
Hopefully we have not blown the budget ;~)