Full Product Overview & Specification
Unisis - derived from the word unison meaning "in harmony"
- our approach to an integrated amplifier, physically a
preamplifier and power amplifier in unison.
The Unisis was developed in 1990 by Tube Technology and
even after fifteen years it is still a much sought after amplifier,
combining the classic virtues of tube amplifier design with the
modern 'clean' power delivery often only found in higher power
designs. It has often been imitated by other manufacturers
but never equalled.
The Unisis Signature is available in three versatile formats;
Unisis Phono - 35 watt stereo amplifier with integral
line preamplifier and MM phono stage
Unisis Line - 35 watt stereo amplifier with integral
Unisis Power - 35 watt stereo power amplifier
The Unisis Signature is a vast improvement over its famous
predecessor. It features a new and improved preamplifier, high
current driver stage, uprated power supply and best of all a
superb new output transformer which has been in development
over the last two years.
Other major improvements are individual output tube protection
and outboard bias meter acceptability, allowing easier
maintenance of the output tubes.
All of these improvements add up to a formidable amplifying
system, with improved bass performance and amazing control
and presence for an amplifier of this power rating, we believe
you will be delighted with the speed, delicacy and openness
of this exceptionally beautiful power-house.
Power is delivered into the most difficult of loads including
electrostatic speakers, which make most solid-state designs
curl up their toes. This neat package will take pride of place
in your listening room and become the centre of the most
ambitious of hi-fi systems where high power output is not
of paramount importance.
The Unisis Line and Phono models are essentially a separate all
tube preamplifier and stereo power amplifier housed in a single
chassis. Featuring dedicated power supplies including power
transformers for each of the pre and power amplifier sections.
The chassis is hand-crafted from sixteen gauge non-magnetic
high purity stainless steel. Housed internally is the preamplifier,
utilizing two low noise double triodes for the line stage and
two low noise double triodes for the phono stage, both
operating in single ended class A.
The phono stage will accept all moving magnets and medium
output moving coils, in the order of 0.8mV. The accurate active
RIAA equalisation is placed in the feedback, consequently the
signal path is as direct as possible. All signal paths are hard
wired with PCOCC and silver cables and kept to a minimum
length. The low noise hum filtered and regulated power supply
allows this preamplifier exceptional performance with either
line or phono inputs.
Inputs for both integrated and power amplifier versions are
through high quality gold plated RCA phono sockets and outputs
through a high quality pair of gold plated 4mm binding posts for
The power amplifier section employs the EL84 output tube,
the smaller brother of the EL34 as used in the Genetix and
Synergy. This tube has a very fluid and crisp sound which
injects exciting realism into a music performance.
The new and improved output transformers are designed to our
proprietary design and each transformer is painstakingly hand
wound to our exacting specifications. The output transformer is
the most important component in a tube amplifier and our obsession
for getting this right is even relayed in the manufacturing
process, where during winding inductance measurements are taken
for extra precision and consistency.
Both the power and preamplifier printed circuit boards are
through plated 3/32 fibreglass, three ounce copper fitted with
silver contact ceramic tube bases and component quality is
carefully selected for both musicality and reliability, including
1% metal film resistors, polypropylene capacitors and long life
low impedance custom power supply capacitors.
No stone has been left un-turned in our quest to deliver a package
that integrates both affordability and true musical enjoyment.