Digital volume control question...


Hi all,

A little background first. I am planning on getting a Wyred4Sound DAC2 and feeding it directly to my amp, which powers my Magnepan 3.6s. (I also plan on getting the W4S ST/SX 500/1000.) And I listen to 70% 24-96, 25% Redbook and 5% 24-192.

Now I know that the W4S volume control is well-implemented and 32 bit. So I’m not too concerned, although I know that there will be SOME signal loss. My question has to do with which amp I should get, given my normal listening levels, (apartment friendly), and about the levels at which the DAC2 begins to degrade or decimate the bit depth through those different amps and into those inefficient Maggies.

I assume that at my normal sound levels and with the more powerful amp, that the DAC2 would begin to degrade the bit-depth SOONER (or at a lower setting), than it would with the less powerful amp producing the same db level. Am I correct here, or not?

(This question will be posed to W4S too, but I wanted an unbiased opinion, also.)

Thanks!

Michael
mkh1099

Showing 1 response by lustformusic

Hello Micheal, based on my own limited experiences you will need an amplifier with an input impedence that is compatable with your Dac of choice but of suitable drive for your Maggies.

Better if the amplifier is equiped with good attenuators so to pad down the the signal at the same time as with the digital attenuator on your Dac.

Both analog and digital volume controls sound best in their higher positions.

I believe the Weiss Dac 202 has a four step analog control via stepped resistors and a good dithering digital volume control and low output impedence output stage to drive the amplifier of choice directly without issue, there may be others .

My present setup is a Server via Firewire to a Weiss Int202 which has a dithering digital volume control then Aes Ebu to a an Audio Research Dac8 driving a Vac Phi300.1 which has analog attenuators to my speakers.

This works a treat for me, John Bent of Bent Audio klndly pointed me in this direction some time ago.

I hope this may help , thank you.