4
5
The Home Amp Rear Panel
1. Analog Inputs
Two sets of RCA connectors allow for independent con-
nectivity of two separate non-digital (analog) sources like a CD player, tape
deck or pre-amp into the Home amp.
2. Analog Input Selector
You may want to plug more than one analog
source into your Desktop Amp. Whether you are using one input or both, you
will need to indicate which analog inputs you want to listen to by choosing
either ‘1’ or ‘2’ with the analog input selector.
3. Rear Output
This set of RCA connectors is for pre-amp applications. You
can send a signal either to powered speakers or directly to a power amplifi er
unit.
4. Ground Lift:
Use this handy two-position switch to cancel out electrical
hum interference coming from ungrounded or noisy outlets. For most applica-
tions, the switch should be set to “normal.” If you are hearing some buzzing,
try moving the ground lift to “fl oat”.
5. Power Entry Module
: Plug in your AC power cord here. The “zero” posi-
tion indicates off while the “one” means the unit is on and ready to go. The
red window box on the power entry module indicates the current voltage set-
ting of your amplifi er. You can easily switch the voltage between 115 VAC and
230 VAC by carefully opening the power receptacle window housing, then
simply slide out the receptacle and reinsert it facing the opposite way until
the desired voltage clearly shows through the power module window box.
The whole process should take less than a minute!
6. Coaxial Input
The coaxial input is your typical coaxial connector. We
recommend using a 75 ohm digital cable when using the coaxial input.
7. Digital Input Selector
When using the DAC, the digital input selector
allows you to choose which digital input you would like to listen to.
8. USB Input
The USB input gets its signal from a computer: laptop or
desktop; PC, Mac, or Unix.
9. Source Selector
When using the DAC, you will need to choose whether
you are using a digital input or an analog input. The source selector switch
allows you to have both digital and analog sources connected at the same
time, and you may change between the two with a simple fl ip of this switch.
10. Optical Input
The optical input is your typical Toslink connector. You
get this input signal from the optical output of your player. Not so many por-
table audio players have optical outputs anymore (call or check our web site
for recommendations), but many portable DVD players and some hard disk
drive players do. Of course, you can get this signal from many pieces of home
equipment.
The Digital-Analog Convertor Option
9.
source selector
5.
Power
Entry
Module
2.
Analog
Input
Selector
10.
optical input
6.
coaxial input
7.
digital input selector
8. USB input
3.
Rear
Output
1.
Analog
Inputs
When purchasing the Home Amp, you have the option of including a DAC. If
you did not purchase the DAC option with your amp initially, you can have
this upgrade performed at a later date.
The Home DAC starts to become a very serious digital to analog converter:
not only does it use the fl agship Cirrus Logic CS4398 DAC, it also uses the
spendy---but oh so sweet sounding---Burr-Brown OPA627 op-amps in class
“A” bias as the output devices. The result is the kind of liquid clarity found in
multi-thousand dollar high-end CD players.
To go along with the previously mentioned class “A” biased OPA627s, only
metal thin fi lm resistors and polyphenylenesulfi de (poly fi lm) capacitors are
used in the audio circuits. Three low-noise, ultra-low dropout power supply
regulators isolate the various digital, analog, and mixed signal circuits. This
DAC is also available in a balanced version for the Home Balanced Amp with
two complete converter sections, one for the normal and one for the inverted
audio signal.
4.
Ground
Lift
6.
(DAC Option)
7.
10.
9.
8.
