Amplification MC
The MC Gain DIP switches change the amplification of the MC stage. The overall amplification of
the phono preamp Pearl is always the sum of MC and MM amplification.
For inactive switches, the MC gain is 20 dB.
Switch 1 active 22 dB
Switch 2 active 24 dB
Switch 3 active 26 dB
Switch 4 active 28 dB
If a high input impedance and a low amplification are selected, High-Output MC systems can
also operate in the MC position.
Capacitance MC
The DIP switches MM C enable the capacitive adaptation of MM systems by self-adding
capacitances. When the Genuin Point tonearm is used, the capacitance from the start of the
tonearm (cartridge connectors) to the Lemo plug is approx. 50 pF.
This value is added to the input capacitance of the subsequent MC amplifier.
Please note: When using MC cartridges, the position of these switches is insignificant.
The fixed input capacitance of the phono preamp Pearl is 47 pF.
Switch 1 active +47 pF
Switch 2 active +47 pF
Switch 3 active +47 pF
Switch 4 active +47 pF
The maximum load capacitance when using the above-mentioned tonearm is therefore 285 pF
(5 x 47 pF + 50 pF).
Amplification MM
The MM Gain DIP switches allow an amplification adjustment of the MM amplifier section.
For inactive switches, the amplification is 37 dB.
Switch 1 active 39 dB
Switch 2 active 41 dB
Switch 3 active 43 dB
Switch 4 active 45 dB
By appropriate selection of MC and MM amplification factors, a suitable amplification for any
existing electrodynamic cartridge system should be found.
The maximum total amplification is therefore 73 dB (switch 4 MC + switch 4 MM). Typical values
for MC are 60 dB and 40 dB for MM.
In the case of a complete mismatch and potential resulting overload, the transparent ring
around the stop button of the Genuin Drive record player will flash red at high speed. This will also
happen if the distortion limit of 0.1% THD & Noise is exceeded (which is not audible yet).
The overload limits for MM and MC at 1 kHz are + 20 dB above nominal level. The nominal levels
for MC and MM are 0.5 mV and 5 mV, respectively.
