Audio Research Reference 150 SE 2-Channel Tube Power Amplifier - Demo/Warranty

An Audio Research REFERENCE 150SE  vacuum tube  2-channel power amplifier was a demonstration  model. The unit was barely used and opened
for demonstration. The unit probably has aout 120 hours and possibly at most 200
hours.  The REF150SE was taken out of the box for only 1 month. Original box and packaging come
with REF150SE. The power amplifier is a 10 out of 10 condition. Full warranty
comes with the unit except for the tubes. 
Tubes only has a 90 day factory warranty and being in our possession for over the 90 day period, unit
has surpassed the timeline.  Tubes are
fully operational and working properly in the unit.

Shipping – Included
with purchase of the unit within most contiguous US states(lower 48 states) only.
Shipping cost is added to buyers in Alaska, Puerto Rico, Hawaii,  Guam and Virgin Islands.

Simply put, the REF150 SE is a
breakthrough in stereo power amplification.  Replacing the REF150—which
was one of the most respected modern stereo amplifiers—was a daunting task, but
it has been accomplished.  The REF150 SE offers more power, greater
dynamic thrust, a more vivid and resolved presentation, greater finesse, and
quieter operation.  It is the new benchmark. Having identical outer
dimensions as its predecessor, the REF150 SE has much more packed into its
chassis.  Refined front-panel cosmetics reflect the updated look of
current-generation models, with silver units having silver handles and silver
top covers, while black units have black handles and black cover.  (Colors
may be mixed to match older models.)

The REF150 SE is a
fully-balanced design, so its inputs are balanced XLR only.  It has a
20-amp IEC power connector, 4-8-16 ohm output taps and 12V triggers arrayed on
the rear panel.  Under the top cover there are a number of circuit
enhancements resulting in stunningly improved performance.



First, power-supply energy storage has been doubled to some 1040 joules. 
All-new interstage coupling capacitors using technology and materials first
incorporated in our Anniversary Edition preamplifier effortlessly link input
stage to output stage, which is powered by two matched quads of Russian KT150
output tubes driven by 6H30 twin triodes.  There is more than ample
multistage solid-state regulation.  Output stage coupling is a combination
of “ultralinear” and Audio Research’s patented “partially cathode-coupled”
topology, which is superior to conventional pentode or triode operation.

Larger,
wide-bandwidth output transformers handle the greater output with ease. 
Power output is rated at 150 WPC into 4-, 8- or 16-ohm speaker loads. 
Each channel is very quietly fan-cooled using new low-turbulence intakes, with
three selectable fan speeds. Internally there is a small LCD display that
indicates tube hours.



With all of these changes one would logically expect enhanced performance. But
it is fair to say you will be shocked by the amount of improvement you hear
from the REF150 SE when compared to its predecessor.  Those familiar
with the boundary-extending performance of the Anniversary Preamplifier will
hear similar qualities from the REF150 SE.



The immediate impression conveys much greater speed, power and control compared
to any other tube power amplifier you can think of.  Bass extension,
harmonic delineation and speaker driver control are the best ever to come from
an Audio Research tube amplifier, regardless of power output – and that is
saying something.  The REF150 SE does not drive a loudspeaker so much
as it dominates it and brings to life what any speaker is truly capable
of.  Paired with capable front-end components and good cabling, the
results are nothing short of a revelation. You will hear inner harmonic
structure and dynamic realism that simply were not present before, within an
envelope of air and spatial cues that let you know that you are hearing
everything that the recording has to offer.



In short, the REF150 SE amplifies more critical musical information from
your preamplifier and source components than you have ever heard before.
 Prepare to be astonished once again.

http://www.audioresearch.com/en-us/products/power-amplifiers/reference-150-se