While it might
look great, it's really about
the sound! The opposing layout
of the tubes creates a small 2 x
4-inch space between the
tube pins at the correct angle
where the entire audio circuit
can be built using only the
parts leads themselves.
When you look at how much this
industry spends on cables and
wires, it's not hard to realize
that the only thing better than
a preamp built around the
world's most expensive wire is
one that doesn't use any.The
transparency of this approach is
limited only by the tubes and
interconnecting cables
themselves which is a kind way
of suggesting that this preamp
will never be the weak link in
your audio chain... regardless
of how much money you may have
wrapped up into sources and
amplifiers.
The ZTPRE project was about
figuring out how to wire the
circuit with the absolute least
number of nodes and how to keep
the shortest distances between
them that created this uniquely
beautiful chassis design.
ZTPRE
DESIGN SKETCH
Normally, a fully
balanced circuit like this would
be laid out in up to 144 square
inches of chassis space where the
ZTPRE has done it in only 8.
ZTPRE AUDIO
CIRCUIT
The
transparency of this approach
is limited only by the tubes
and interconnecting cables
themselves which is a kind way
of suggesting that this preamp
will never be the weak link in
your audio chain... regardless
of how much money you may have
wrapped up into sources and
amplifiers.
A preamp
like this one is very much
like the preamp that you
can't hear... except for the
way it animates the music.
It takes music that already
sounds good, and makes it
pop into a believable
experience. It does this
with dynamics, separation,
pace, density and
holographic imaging and does
so against a backdrop of
liquidity and intoxicating
tone. These are all things
which are the natural result
of gimmick-free
circuit design and superior
execution.
The ZTPRE
comes standard with 1
pair of balanced XLR inputs
and 1 pair of balanced XLR
outputs. Each
channel's output has an
output level control and
master volume. This is
the most 'purist'
configuration with the
least number of parts
because there is no input
selector.
BLACK FACE PLATE WITH BLACK
KNOBS
RED
FACE PLATE WITH SILVER KNOBS
BLACK
FACE PLATE WITH SILVER KNOBS
All of the above
options can be configured from
within the shopping cart.
The ZTPRE is
compatible with RCA to XLR adapters
on the inputs, outputs,
or both. Alternately,
you can configure it with
transformer-coupled RCA inputs as one of
the options in the shopping cart.
Weight |
|
18 lbs. ea. |
Dimensions |
|
3.5" H x 17.00" W x
10.75" D |
Circuit type
|
|
Single ended Class A
Triode SRPP |
Output |
|
Adjustable 0 ~ 35
volts
|
Input voltage
|
|
10.5 volts RMS
|
Noise / Hum |
|
- 58 dB |
Input Impedance
|
|
47 k Ohms |
Output Impedance
|
|
600 Ohms |
Response |
|
5 Hz ~ 100 kHz +/- 4dB
20 Hz ~ 20 kHz +/-
0.7dB |
Distortion |
|
At 10.83 VRMS output
0.4% THD
|
Feedback |
|
ZERO negative feedback
used |
Rectification |
|
Ultra Fast Recovery
Bridge |
Signal tubes
|
|
6N1P-EB |
Biasing |
|
Self-Biasing circuit -
never needs adjustment |
Resistors |
|
All resistors are
audiophile grade |
Signal Caps |
|
Cryo treated Copper
Foil Beeswax
|
Filter Caps |
|
All filter caps are
premium quality |
AC cord |
|
IEC connector provided
with removable power cord |
Fuse |
|
Dual Fuse holders /
one per channel / external
|
Consumption |
|
109 watts at full
power |
Input jacks |
|
High Quality XLR
|
Output jacks
|
|
High Quality XLR
|
Warranty |
|
Lifetime to original
owner / 90 days on tubes |
VOLTAGES
This preamplifier comes standard with
our World Voltage Compatible
Transformers.
It will be automatically wired for the
right voltage for your country and be
supplied
with the right removable power cord.
ZTPRE
Distortion Analysis at full
output 0.4% THD
ZTPRE
Schematic of One Channel Only
OWNERS
MANUAL
OWNERS-MANUAL.PDF
ZTPRE
TOP VIEW
Have your
ZTPRE built and shipped to
your door for a
30 day
money-back in home trial
less a 10% restock
fee.
|