Ayre Acoustics KX-5 TWENTY

Excellent condition and looks like new. This product has been in a smoke-free environment. The KX-5 Twenty has been one of my favorite preamplifiers, but it doesn't get used as often now due to an all-digital direction with my system. 
If you're looking for a preamplifier that sounds fantastic and delivers some innovative technology, then the Ayre VGT preamplifiers are a must-listen. 
Arguably the most important component in your system, the KX-5 delivers all of the performance and flexibility you have come to expect from an Ayre product.
Following in the legendary footsteps of the KX-R preamplifier, the Ayre KX-5 lives up to the challenge with dynamics powered by our Diamond output stage and finesse achieved by eliminating the traditional attenuating volume control with our 46 position Variable Gain Transimpedance (VGT) amplification circuit. Featuring six programmable inputs and our unique Equilock gain stage, the KX-5 will draw you in with its enchanting musicality and drop your jaw with its endless depth of stage.
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

Specifications

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

Gain
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)

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

Weight
23 pounds (10.5 kg)