Help, How much gain does this preamp have?

[xbart]

I'm trying to find out how much gain this preamp has using the LOMC input.
I have a LOMC that has 0.2mV output and read the optimum gain is 64 db.

The preamp in question is a Luxman C-02

Here are the specs I found for the Luxman C-02

Pre output : 1V / 220 Ohm {100 Ohm}
Maximum pre output : 18V
Rec output : 130mV / 220 Ohm
Maximum rec output : 18V
THD : 0,005% (line, 2V output)
Frequency response : 5Hz...100Khz (± 0,5dB, line level) {± 0,3dB}
20Hz...20Khz (± 0,3dB, phono)
S/N ratio : 75dB (MC, IHF-A, 250µV) {77dB}
85dB (MM, IHF-A, 5mV) {90dB}
110dB (line, IHF-A, 1V)
Inputs : 100µV / 47kOhm / 100 Ohm / 300 Ohm (MC)
2,0mV / 50kOhm (MM)
130mV / 47kOhm (line)
Max. phono level : 12mV (MC) {15VmV}
250mV (MM) {280mV}
Bass turnovers : 200Hz or 400Hz (± 8dB)
Treble turnovers : 2Khz or 4Khz (± 8dB)
Low boost : +8dB at 100Hz
Subsonic filter : 30Hz (6dB/octave)

 

[Blue Shadow]

It will work. Optimum gain...what does that mean? Not much, I don't think.

You need gain to get enough out of your cartridge/phono system to drive your amp. They think 64dB is the number.

Look at it a different way. How much signal must a cartridge have to get full output from a phono system. In this case the Luxman needs to see 100µV or 0.1mV and your cartridge has an output of 0.2mV. You will be fine. Next step is to select the MC cartridge loading available with the C-02, 47/100/300Ω choices. Listen and pick the one you like.

 

[whoaru99]

Taking the specs at face value there is nominally 80dB gain available re. the MC input.

MC rated input sensitivity: 100uV (0.0001V)
Preamp rated output: 1.0V

Voltage gain = 20log(1.0/0.0001) = 80dB

Bear in mind that does not mean the net gain is fixed at 80dB. The net gain (ratio of pre out voltage to signal input voltage) is inherently reduced as the volume control position is reduced.