1. Home
  2. /
  3. Products
  4. /
  5. Specials
  6. /
  7. Amplifiers/DACs
  8. /
  9. Ayre KX-5 Twenty preamplifier....
Screen Shot 2023-10-06 at 4.03.37 PM
Screen Shot 2023-10-06 at 4.03.37 PM
Ayre KX-5 Twenty-top

Ayre KX-5 Twenty preamplifier. Pristine!


Make An Inquiry

Sold Out

Only one owner. Pristine condition with original box and accessories.

Considering reasonable offers. Please contact us at office@blinkhighend.com or 617-225-0700.

Ayre Acoustics KX-5 Twenty Preamplifier

The KX-5 Twenty Preamplifier is broadly acclaimed as one of the finest preamplifiers available. As with all Ayre products, this is a zero feedback, fully discrete design. Following the architecture of Ayre’s revolutionary KX-R, the KX-5 Twenty employs Ayre’s Variable Gain Transimpedance volume control. Rather than attenuating the audio signal to varying degrees using a resistor in the signal path, as is the case in almost all other preamps, the VGT alters the preamplifier’s gain to varying degrees. This puts fewer elements into the signal path and maintains higher SNR at all listening levels.

The unit on offer has been meticulously maintained in a smoke-free home. The unit was last serviced at the factory within the last 6 months, at which time the VGT mechanism was fully inspected, all contacts were cleaned, and the device was thoroughly tested to ensure performance was confirmed to be at factory specifications. The remote control (never used), manual, and all original packaging will be included.

Includes Ayre’s custom RS-232 to AyreLink interface box. This unit permits control of the unit via a computer or a home control system, such as Control4. A free Roon plugin is available users who wish to use the interface to control KX-5 volume through the Roon interface.

Product Webpage: https://www.ayre.com/products/amplification/kx-5-twenty/

Stereophile Review: https://www.stereophile.com/content/ayre-acoustics-kx-5-twenty-line-preamplifier

SoundStage Ultra! Review: https://www.soundstageultra.com/index.php/equipment-menu/604-ayre-acoustics-kx-5-twenty-preamplifier


All units come with original packaging materials, shipping boxes, and manual. The KX-5 Twenty preamplifier remote is unused, in its original packaging.


  • Share


  • Ayre’s Diamond output stage
  • Variable Gain Transimpedance (VGT) volume circuit
  • Ayre’s exclusive Equilock circuit
  • 46 step volume control, each of 1.5 dB
  • Linear analog power supply
  • zero-feedback and fully-balanced discrete circuitry
  • High-speed circuit board material
  • Input ground switching for true source isolation
  • Six inputs: four balanced, two single-ended
  • Ayre Conditioner power line RFI filter
  • AyreLink communication system

Maximum Input Level
8 V rms – unbalanced inputs
16 V rms – balanced inputs

Gain Variable to match the required output level of the system without the need for attenuation.

Input Impedance
1 MΩ unbalanced inputs
2 MΩ balanced inputs (1 MΩ per phase)

XLR Input Polarity
Pin 1 = Ground
Pin 2 = Non-inverting (Positive)
Pin 3 = Inverting (Negative)

Frequency Response
DC – 250 kHz

Power Consumption
40 watts in operating mode
60 watts in operating mode (volume control active)

17.25″ W x 13.25″ D x 3.75″ H
(44cm x 34cm x 10cm)

23 pounds (10.5 kg)


There are no reviews yet.

Be the first to review “Ayre KX-5 Twenty preamplifier. Pristine!”

Your email address will not be published. Required fields are marked *

Blink High End

Make an Inquiry