marty97x
One of my R2R dream machines, been looking for one for ages, to do redbook with.
Yes they do have PCM1704K d to a chips (selected) and a HDCD input filtering chip, this is about as good as old school R2R Multibit gets, most new today are discrete R2R because the PCM1704 is no longer made because of it huge manufacturing cost and was the last of the best R2R’s chips made.
And forget the preamp, you really should try the No.39 direct to poweramp as it has an output stage most active preamps couldn’t match, should sound far more transparent. Here’s how to do it.
Cheers George
One of my R2R dream machines, been looking for one for ages, to do redbook with.
Yes they do have PCM1704K d to a chips (selected) and a HDCD input filtering chip, this is about as good as old school R2R Multibit gets, most new today are discrete R2R because the PCM1704 is no longer made because of it huge manufacturing cost and was the last of the best R2R’s chips made.
And forget the preamp, you really should try the No.39 direct to poweramp as it has an output stage most active preamps couldn’t match, should sound far more transparent. Here’s how to do it.
Fixed/Variable Volume.
The Nº39 gives you the option of engaging a high quality analog volume
control, allowing you to use the Nº39 as a digital-sources-only
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“preamp,” driving a power amplifier directly. This capability is particularly
useful in simple systems involving only two or three digital
sources. (The volume control circuitry is completely removed from the
signal path when this option is turned off). When first engaged, the
volume control circuitry will be set to a low volume to avoid any
chance of overdriving your loudspeakers
Balance Control
If you have engaged the volume control circuitry by setting the + VARIABLE
menu item, then you will also see a balance control within the
setup menu, indicated by arrows pointing in both directions (when at
the neutral position). Pressing the mode + key will move the balance
and the image to the right, indicated by a number of decibels and the
arrow pointing to the right; pressing the mode – key will reverse this
process. (This menu does not appear in the – FIXED volume mode,
since it would not apply.)
Locked Volume
Lastly, if (and only if) the volume control circuitry is engaged, you have
the option of setting a maximum volume beyond which the Nº39 will
not go. This is particularly helpful if you have a combination of high
sensitivity speakers and high senstivity power amplifiers, which might
make the normal maximum volume setting on the Nº39 dangerously
Cheers George