Unison Research Simply 845 Integrated Tube Amplifier
SKU: 80207395445

Unison Research Simply 845 Integrated Tube Amplifier

Sale price$8010.00 Regular price$8900.00
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Description

Unison Research Simply 845 Integrated Tube AmplifierSimply 845 The New Simply 845 ranks at the top of Unison Researchs line of integrated tube amplifiers, second only to the historic ABSOLUTE 845. The SIMPLY 845, like the ABSOLUTE 845, also employs the famous 845 direct heated triodes, tubes well known for remarkable durability and extraordinary sonic qualities. The great advantage of integrated amplifiers is the incorporation in a single chassis of the preamplifier and the power amplifier. This makes

Simply 845

The New Simply 845 ranks at the top of Unison Research’s line of integrated tube amplifiers, second only to the historic ABSOLUTE 845. The SIMPLY 845, like the ABSOLUTE 845, also employs the famous 845 direct-heated triodes, tubes well known for remarkable durability and extraordinary sonic qualities.
The great advantage of integrated amplifiers is the incorporation in a single chassis of the preamplifier and the power amplifier. This makes it possible to eliminate the need for high-cost interconnect cables that are never truly neutral to sound reproduction. It should be noted that in the renewed production of the Simply 845 its size has been reduced by bringing all input and output connectors, strictly gold-plated and of a new type, to the rear of the amplifier.

The great advantage of integrated amplifiers is the incorporation in a single chassis of the preamplifier and the power amplifier. This makes it possible to eliminate the need for high-cost interconnect cables that are never truly neutral to sound reproduction. It should be noted that in the renewed production of the Simply 845 its size has been reduced by bringing all input and output connectors, strictly gold-plated and of a new type, to the rear of the amplifier.

Transformer

As in all Unison Research tube amplifiers, the output transformers in the Simply 845 are of our exclusive design and made one by one, by hand.

A good output transformer is not only the result of a rigorous design, but also the choice of materials particularly suited to act linearly with the intense magnetic and electric fields interacting within it.

The Simply 845 uses very thin Mylar and Polypropylene insulators suitable to contain parasitic capacitance and dispersion of magnetic fluxes as much as possible thus achieving an extended frequency range and very low harmonic distortion.

In addition, the ferromagnetic core employed is considerably different from cores commonly used in audio products and consists of a stack of thin laminations of a special alloy of iron and silicon all insulated from each other, the molecules of which are oriented and fixed in a stable manner to facilitate the flow of the lines of force of magnetic fields.

Circuits

In the Simply 845 all stages, both the preamplifier and power output, operate in pure class A. The preamplifier circuits are fed by stabilized linear-type electronic power supplies designed specifically to minimize interference with mains noise.

In the electronic circuits, all capacitors affected by the audio currents are anti-inductive with armatures insulated by polypropylene dielectrics, the ultimate in current technology. The printed circuit boards used are not of the normal industrial type, but differ in having fiberglass backing, and pure electrolytic copper traces three times as thick as the standard.

The volume potentiometer plays a very important role in high sound quality, and for this reason our choice fell on the famous RK27 motorized Japanese-made ALPS.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 80207395445

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Bozeman, US
★★★★★ 5
Soft, not overcooked. My dog loves them!
Size: 14.11 Ounce (Pack of 1)
Soft jerky texture. Easy to cut into smaller pieces.
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Reviewed in the United States on April 30, 2026
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Janet Hauter
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★★★★★ 4
Good but costly
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Spirit likes it but the price increase is unsustainable.
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Jane
Pawtucket, US
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Large chicken chews—high protein that my dog absolutely loves!
Size: 1.31 Pound (Pack of 1), Size: 1.31 Pound (Pack of 1)
These jerky chicken dog treats are my dog’s absolute favorite! I love that it is high protein so I feel he is getting something healthy. Very generous size, and love that they don’t smell. I have a large German Shepherd and he chomps these up with no problem. They are a good value for the money and I have ordered them many times
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Reviewed in the United States on October 15, 2025
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SJV
Charlottesville, US
★★★★★ 5
Worth it!
Size: 14.11 Ounce (Pack of 1)
Well made as described and my pup loved them.
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Reviewed in the United States on March 26, 2026
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I got the MON2SUN Chicken Jerky Dog Treats (Made with Chicken Breast, High Protein & Grain Free, 21 oz) for my pup and have been impressed. The treats are truly made with chicken breast and grain-free, which gave me confidence in the ingredient list. My dog’s eyes lit up when I opened the bag, and the pieces are appropriately sized for training—easy to break into smaller bits for quicker rewards. Recommendation: If you’re looking for a quality, high-protein, grain-free treat for your dog (small to large breeds), this is a solid choice.
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