On Fri, 03 Dec 2004 12:09:01 +0000, Phil North
wrote:

Nick Gorham wrote:
Dave Plowman (News) wrote:

In article ,
Nick Gorham wrote:

Out of interest, what the input impediances of the amps in question ?
That could well be making a difference. And maybe input capacitance,
depending on the circuit of the phono stage.



I'd also be interested in the output impedance of the pre-amp. Does it
use
cathode followers?


That was my point...


From http://www.mei-xing.com/doce/pro20.htm

MM input level: 2.5mv
MC input level: 0.5mv
MM input impendence: 47k?
MC output impendence: 100?
MM signal to noise ratio: 91dB
MC signal to noise ratio: 86dB
Output impendence: 100K?

One day I will know what all this means!

One thing this means for certain is that you shouldn't buy this
amplifier. At 100k output impedance, if you connect it to a power
amplifier with a cable whose capacitance is as little as 100pF, the
response will be 3dB down at 15kHz. This is most definitely NOT a
competently designed amplifier.

d
Pearce Consulting
http://www.pearce.uk.com