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 atmasphere

We have an amp that has only 23 db of gain. It works really well with ZU speakers too.

The problem you are having is classic- a DAC with too much output. I don't understand why DAC manufacturers do this- to me it seems like a fundamental misunderstanding of how power amplifiers work. There is not a power amp out there that needs more than 3 volts input, so why do you need 5 or 6V?

With that kind of output you have to attenuate the signal, either by passive control, digital volume control or something like the Rothwell attenuators. *All* of them rob the signal of musicality! With digital and passive controls, the higher you can run the control the better they sound (although for different reasons). So why force the user to turn things down so much??

Enough of my diatribe- you have gotten good advice from other posts here...