Ayre KX-R Twenty Preamplifier

Since the introduction of the KX-R preamplifier in 2008, Ayre have embarked on many projects involving new technologies. While progressing along this musical journey, their collective knowledge base has grown immensely in all areas of audio circuit design. These new insights have been implemented at the highest level in the complete redesign of the KX-R Twenty. These technologies and upgrades to the KX-R have resulted in a preamplifier which is as revolutionary now as the KX-R was when it was originally introduced with the world’s first Variable Gain Transconductance (VGT) volume control.

The debut of the AyreLock power supply uses a new type of discrete voltage regulation with more than twice the capacitance of the old power supply, delivering powerfully layered dynamics—musically. Ayre's optimizations of the current mirror and addition of the Ayre Diamond output stage impart such a stunning sense of realism that you will be captivated from the first note. The resolution of detail and ultimate sense of refinement you will discover in the KX-R Twenty both come from hundreds of hours of listening tests, allowing them to choose the absolute best part for every critical area along the audio circuit.

Key Features:

• Variable Gain Transimpedance (VGT) volume circuit
• Ayre’s exclusive Diamond output circuit
• AyreLock power supply
• zero-feedback
• fully-balanced discrete circuitry
• 60 step volume control, each of 1.0 dB
• Equilock circuitry for active gain devices
• Input ground switching for true source isolation
• Eight inputs: four balanced, four single-ended
• Two balanced outputs, two balanced tape outputs
• Dimmable silent-mode fluorescent display
• Ultra-high-speed circuit board material
• Fly-by-wire control system
• Solid aluminum monocoque chassis
• Ayre Conditioner Power-Line RFI Filter
• Programmable processor pass-through input
• Full-function remote control operation

Technical Specifications:

• Input Impedance: 2 Mohm balanced (1 Mohm per phase)
• Output Impedance: 300 ohm balanced (150 ohm per phase)
• Frequency Response: DC – 250 kHz
• Power Consumption: 35 watts in standby or normal operation / 65 watts with remote control active
• Dimensions: 17.25″ W x 11.5″ D x 3.75″ H / (43.8cm x 29.2cm x 9.5cm)
• Weight: 40lbs (18kg)

We endeavour to despatch same day for orders placed up to 1pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is received. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK Orders

We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as DPD or UPS.

International Orders:

Due to the nature of our products and brand restrictions we are only able to send certain items internationally. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Hifisound or by the courier with a request for any further information required. Customs duties can apply for shipments to any countries outside of the UK depending on where the product you have bought is made. Customers are responsible for all taxes and duties incurred when the items enter their country.

Collect in Store or Home Install

At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock.