Unison Research S6 Tube Integrated Amp - Demo Class-A triode mode, tonally rich, yet controlled throughout

Kaplan Design (kaplanhtdesign dot com) is an Authorized Dealer for Unison Research.

S6 CLASS A INTEGRATED STEREO SINGLE - ENDED TUBE AMPLIFIER 35 + 35 W RMS - 120 Volt Unit! Current Unit in Product Line-Up!

New Price $4895. Selling for $3299 OBO

This a a very nice performing Amp Lots of Great Reviews!

This Amp is Dead Quiet!

Top Center Cover is Brand New! This was replaced a few weeks ago due to marks from the tube cages rubbing up against during shipping!

I will include Two (2) New Electro Harmonix EL34's Tubes!

Full Warranty US Only, starts the day its sold to a customer.

Rated 9/10: to be conservative

Includes Tube Cages $250 Option!

Remote, Manual and Original Double Boxes with all the packing!

Can be seen and heard at my showroom in Los Angeles kaplanhtdesign dot com - please contact me to schedule an Appointment - Serious Buyers only.

higher resolution Pics available - Please send me your email address.

Sales in California add Sales Tax of 8.5% - 9.5%

Shipping Options
US: FedEx or UPS {30-50%more!}
UPS Standard to Canada will also ship FedEx International to Canada with your Account number for Duty & Taxes

USPS International Shipping:
Priority Mail and EMS are not available based on Dimensions and Weight 70lbs! 24x15x20 Length x Width x Height GXG (Global Express) Maximum Insured Value $1000. Total Cost if weight is 70lbs or less $669.83 70lbs max Weight Limit
The above rate is for shipping to Argentina! UPS International Rate is $1123. insured/Declared Value $2995.

Payments Accepted
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What HiFi Review
"It’s agile and insightful, delivering the low-level details that define the texture of instruments and voices brilliantly. Not only that it keeps every musical strand in place even with demanding recordings such as Beethoven’s Fifth.

Here, the Unison Research manages decent dynamic swings and delivers them with a confidence barely reflected by the 33W per channel power rating.
Review Tone Audio
"Its 35 watts per channel will suffice for all but the most inefficient speakers when playing at reasonable levels. This robust amplifier works well with all of the test speakers at our disposal, from the 85db Dynaudio Confidence C1s, to the 91 db Sonus Faber Ellipsa SEs."

he true beauty of the Unison Research S6 is the smooth, yet defined midrange and the ease that it transitions into the upper registers. Cymbals sound reach out and touch them real and solo vocalists are divine. A quick spin of the latest Doors remasters from Acoustic Sounds on 45 rpm vinyl reveal layer upon layer of vocal and instrumental texture in a way that most vintage gear does not. The S6 follows the musical pace well, producing texture and tonal contrast without sounding warm, syrupy and slow. A perfect match of old and new school design ethos.

Reprinted from Unison Website:

The latest version of the Unison Research S6 integrated amplifier is the result of over 25 years of experience with building valve amplifiers that have been praised all over the world for their beauty, reliability and performance. Our main goal with the S6 was to create an EL-34 integrated amplifier that has compact dimensions yet is able to drive most speakers comfortably—even those designs with relatively low efficiency.

The S6 uses three EL-34 tubes in the output stage per channel, connected together in a triple-parallel configuration that operates in single-ended Class A ultralinear mode. With this design, the S6 is able to supply an ample 35 watts per channel. Both 4-ohm and 8-ohm speaker outputs are available so that you can match the loudspeaker of your choice to the S6 for the best results.

The S6 was also designed with simplicity in mind. Our designs ensure that a minimum amount of components are found in the signal path, because we believe that the finest sound quality is the result of an unimpeded signal flow. This simplicity also translates to an amplifier that is more reliable and trouble-free in its operation.

Our dedication to robust and reliable products extends to the design of our transformers. Unison Research is one of the few audio companies in existence that designs and builds its own output transformers—each and every one is built by hand in our own workshops. We carefully match the size of each transformer to match the circuit—nothing is taken “off the rack.” This approach ensures the S6 will have a very wide frequency response, tube life will be extended and that this amp will last and produce beautiful music for decades.

The extraordinary beauty of the S6’s exterior is practical as well. Unison Research is known for its gorgeous wood accents, and the chassis of the S6 is no exception. These wood accents, however, assist in reducing vibrations that can affect the signal path. The control knobs are machined with precision from stainless steel to extremely tight tolerances—we do this for both accuracy and for the wonderful tactile qualities of these surfaces. Finally, we have designed stainless steel baseplates for the tube sockets that act as thermionic reflectors and excel at dissipating heat from the amplifier. This feature is not only visually stunning; it also extends the life of your S6 amplifier.

We spent countless hours perfecting the S6, and the result is an amplifier that epitomizes the Unison Research sound—warm, airy and transparent. From its Italian craftsmanship to its ingenious circuit design, we think you’ll agree that the S6 is one of our greatest achievements.

Technical Characteristics
Type: Stereo Integrated Valve Amplifier
Output Stage: single-ended parallel, ultraliner
Classe: pure A class
Output Power: 30/35 Watt/channel
Frequency Response: 20 Hz – 50,000 Hz
Output Impedance: 6 Ohm
Input Impedance: 47 kOhm
Inputs: 5 line
Outputs: 1 tape, loudspeakers
Power Consumption: 265VA max
Dimensions : 13.78" x 19.3"x 8.27" (L x W x H) (footPrint 13.37 x 17" Deep)
Net Weight: 55 lbs
Remote Control RC2

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