The 'Basis' provides
a silky smooth, clean, dynamic presentation with low
distortion using a Class A SRPP zero feedback circuit. If you have
never heard the virtues of a 6SN7 based
preamp, especially one designed by Purity
Audio Design, you do not know what you are
missing. Don't let
the affordable cost of the Basis Series fool you,
this is a piece that is very much at home in
the most elaborate audiophile systems and
decors.
The sound of
the Basis can be voice from slightly warmer than pure
neutral (but still less colored and
more neutral than
many other tube linestage designs) to very
articulate and revealing depending on the
coupling capacitors your choose.
The Basis provides a dead quiet background allowing you to
enjoy and appreciate the finest nuances hidden within your
recordings along with a broad soundstage positioning you in
the center of the performance. Like all
Purity Audio Design linestages, the Basis
too utilizes no feedback.
This elegant design is a very low
maintenance product allowing you to spend
all your time enjoying the music.
The Basis features 5 line level inputs. Two
sets of RCA outputs are perfect for bi-amping
or driving a powered subwoofer. We can
also
offer a home theater bypass as well as a fix signal output for those looking
to put all their vinyl onto CD.
Passive Home Theater Bypass
Option - This features
allows the user to install the Basis
linestage in a dual purpose system where a
home theater or multi channel processor can
be connected. Being a passive bypass, the
Basis is not powered on when this feature is
in use.
The main chassis for the Basis is
constructed of 1/2" solid hardwood and acrylic
with custom hardwood or aluminum control knobs making the Basis a beautiful enhancement to any decor.
Standard hardwood is Curly Maple.
The Basis can
be configured to run with the following mains voltages:
110V- 117V or 220V-240V. Primary voltages
are factory wired so let us know
what voltage arrangement you need at time of
ordering.
The two 6SN7 vacuum tubes protrude through
the top of the unit allowing you to tube
swap without having to remove a bunch of
screws to take a cover off. With only two tubes
protruding from the top of the unit,
re-tubing or tube rolling in the Basis is easy and
affordable.
Key standard features
Highest
quality circuit components
High
current toroidal transformer
Innovative power supply design
Ultra
Fast diodes in
the rectifying bridge of the power
supply
Cardas
RCA
input and output connectors
100%
point-to-point wired
High quality volume and source
selector controls
(Remote control options include a
dedicated power supply
Relay controlled source selection
available (manual or remote)
Inputs:
5 single ended
line level
Outputs: 2
sets single ended
Output
gain; 17dB standard
Hand built
in the USA.
Gain: 17dB maximum
Input impedance 135k ohms
Output impedance
450 ohms
Phase inverting
Net Weight 21 lbs
Size: 15" W x 12" D x 5"H (standard units)
-
Dale RN
1% resistors
-
Clarity Cap
coupling capacitors
-
Alps Blue
volume control
(non-remote)
-
Low DCR power supply filter
capacitors.
-
Ultra
Fast
diodes
-
Cardas input/output
RCA connectors
-
5 inputs / 2 outputs
-
Teflon composite tube
sockets
-
Solid Curly Maple/Acrylic
hardwood chassis
-
Solid Hardwood
or aluminum control knobs
-
Acrylic bottom plate
