The 
ENVY24HT-S chip is part of VIA's new Vinyl Audio Solutions line   of products. These chips are designed to 
be used both in stand-alone sound cards and as built in motherboard audio 
solutions.  
         
              
          
  In addition to 7.1 surround sound, the chip 
features 24-bit maximum audio resolution and 192 KHz maximum sampling rate using 
the digital I/O connectors, and 20-bit, 48Khz using the analog ports.   24-bit audio is actually available when using 
headphones or analog speakers, but the method of getting it is a bit 
strange.  
The 'Alt center' analog jack is powered by a 
separate DAC (Digital to Analog Converter) which is actually capable of 24-bit, 
192Khz sampling, matching the capabilities of the digital ports.  This port 
can be set to operate independently using the Entertainer's driver panel, and it 
then produces the desired 24-bit sound (apparently at 96KHz not 192KHz though, 
according to the driver control panel), but effectively restricts the card to 
two channels (for headphones or a pair of speakers).  Odd, but more of a 
concern to audiophiles than anyone else. 
        
             
               
    What the Entertainer does not feature is hardware support 
for 3D audio, something that its  main competitors like the Audigy have implemented for some 
time. This is not to say it is incapable of producing 3D 
positional audio, just that it uses software drivers that must use the system's processor power 
to do so.    
        
             
               
             
       This may be less of a concern than it 
might seem at first, as modern computer processors can easily handle this 
burden. We'll take a look at how this affects 3D gaming with the Entertainer a 
little later on.    
Why 7.1 channel Audio? 
Good 
question...On one hand, 7.1 is still unquestionably overkill for the PC market, 
since there are very few consumer 7.1 speaker packages available for home PCs. 
It's much easier (and cheaper) to get hold of a 7.1 card than it is a matching 
speaker set.
On the 
other hand, PCs are much more likely these days to serve as a sort of media 
center with DVD, audio and games in one package, and nothing accents these three 
things more than awesome surround sound. New DVDs (using the Dolby digital EX 
standard) can make full use of 7.1 setups, though they are about the only thing 
that will. 7.1 support is not really the point of this card though, despite the 
name.
It's just 
the feature of choice among soundcards this year. We'd rather you purchase your 
next soundcard based on its other merits, not its support of 8 speakers.
The Mad 
Dog Entertainer uses Via's Stylus Audio driver 
software package. The  control panel for the card is straightforward and fairly 
sparse in terms of features, but easy to use. The volume control for each set of speakers is available from 
the 'playback' tab and looks like any number 
of integrated audio software packages.

The 'record' tab is self-explanatory…

    The 'Digital out' tab features a variety of settings for 
the SPDIF port, as well as the control which enables  96KHz output on 
the 'alt center' analog output (odd place  to put 
this).
     
The 'enable hi sample rates (96KHz)' setting sets the 'alt-center' analog port 
with the 24-bit DAC (as mentioned above) to be the only analog output, 
enabling 24-bit, 96KHz stereo sound over headphones or a pair  of speakers only. 
The other option, 'enable digital output' um,  enables digital 
output.