2. amps-preamps
  3. 1304036269

help me to understand the gain

I have a problem that the gain is too high. I can only turn the volume knob to 7 o'clock position, with the 0 at 6 o'clock. I am sort of ok when using my computer where I can lower the volume in iTunes. But from my CD player, I cannot.
I am using Maverick Audio DAC, PrimaLuna Progloue 3, McCormack DNA-1, and B&W CDM9NT.

CDM9NT - 90db sensitivity
PrimaLuna - gain 12db(4x), input impedance - 100k Ohm, output impedance - 2800 Ohm
McCormack - input impedance - 100k Ohm, 150Wpc RMS into 8 ohms (21.8dBW)

is that my equipments are out of synergy? I just bought a pair of Zu which is 101db sensitivity, does that mean it will be a even bigger problem? should I buy another preamp with less gain, or should I buy another amp with less power output?
gte357s

Showing 1 response by davehrab

davehrab's avatar
davehrab
380 posts
 
Your DNA1 has an input sensitivity of 1.2 volts .. which means a 1.2 volt signal will drive the amp to it's rated output (150 WTs)

The PL3's output voltage is 5 volts as measured in a Stereophile review and way to much output for the DNA1's input stage

The PL3 is over powering the DNA1 input stage and you can't use all the volume control available in the PL3 as it only takes 1.2 volts to drive the amp to max output

You can put a 10db attenuator at the amp's input or just remove the PL3 and drive the DNA1 from the Dac ... which has Tube output and a volume control

The Dac's 2 volt output is much more compatible with the DNA1's 1.2 volt input sensitivity

Unless you need the PL3 to switch other sources ... take it out as you already have Tube flavor in the Dac

Wouldn't hurt or cost anything to give it a try ... Ditch the PL3 to and give it a listen
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