Unison Research Simply 845 Tube Integrated Amplifier
Top Pick
Unison Research

Unison Research Simply 845 Tube Integrated Amplifier

4.6

Best premium tube amplifier for dedicated high fidelity audio enthusiasts.

This amplifier brings the lush, harmonically rich warmth of direct-heated triodes into a surprisingly compact, user-friendly package. By prioritizing pure Class A operation and self-biasing circuitry, it offers the romantic, liquid sound of vintage tubes without the typical maintenance headaches. It is a masterclass in balancing uncompromising sonic purity with daily livability.

$10999.00

In stock

at

Audiolab Stereo & Video

Power Output Watts Per Channel 23
23
40

Who it's for

  • Audiophiles seeking a warm, organic, and emotionally engaging listening experience
  • Design-conscious listeners who value premium aesthetics and artisanal build quality
  • Purists wanting high-end tube performance without complex multi-component setups

Who should skip it

  • Users with limited ventilation or small, enclosed equipment racks
  • Owners of demanding, low-sensitivity speakers who need high-wattage drive
  • Listeners who frequently rearrange their setup or use lightweight shelving

Performance breakdown

Sonic Warmth

Direct-heated triodes deliver a lush, harmonically rich listening experience.

Excellent

Build Integrity

Italian craftsmanship shines through in the robust, high-quality chassis construction.

Excellent

Operational Simplicity

Self-biasing tubes remove the typical maintenance headaches of vintage amplification.

Excellent

Power Delivery

Class A output offers beautiful nuance but requires efficient speaker pairing.

Good

Signal Precision

The ALPS motorized volume control ensures smooth, accurate level adjustments.

Excellent

Component Quality

Custom-made transformers provide exceptional signal purity and long-term reliability.

Excellent

Key Specs

Type

Integrated tube amplifier

Tubes

2 x 845, 4 x ECC82/12AU7

Amplifier Class

Class A

Power Output

23 Watts per channel

Number of Channels

2

Frequency Response

20Hz - 50kHz

Minimum Frequency Response

20 Hz

Input Impedance

47 kOhms

Speaker Impedance

6 Ohms

Input Connections

RCA

Know before you buy

Still have a question?

Ask Metto anything about the Unison Research Simply 845 Tube Integrated Amplifier before you decide.

Unison Research Simply 845 Tube Integrated Amplifier

Ready to buy?

Audiolab Stereo & Video
Audiolab Stereo & Video
In stock
$10999.00
Buy
The Listening Room
The Listening Room
In stock
$10999.00
Buy
Analog Matters
Analog Matters
In stock
$10999.00
Buy
Sound Approach
Sound Approach
In stock
$10999.00
Buy
Vinyl Sound USA
Vinyl Sound USA
In stock
$10999.00
Buy