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The Ayre KX-R Twenty is a high-end line-level preamplifier designed to deliver exceptional audio fidelity through advanced engineering and meticulous design. It features a Variable Gain Transimpedance (VGT) volume circuit that maintains consistent sound quality at all volume levels by altering gain rather than attenuating the input signal. The preamplifier employs Ayre's exclusive Diamond output circuit and a newly developed AyreLock power supply with discrete voltage regulation and increased capacitance for improved dynamic performance. The design is zero-feedback and fully balanced with discrete circuitry, ensuring minimal distortion and noise. It offers 60-step volume control with 1.0 dB increments, Equilock circuitry for active gain devices, input ground switching for true source isolation, and a fly-by-wire control system. Connectivity includes eight inputs (four balanced XLR and four single-ended RCA), two balanced outputs, and two balanced tape outputs. The unit is housed in a solid aluminum monocoque chassis with a dimmable silent-mode fluorescent display and includes an Ayre Conditioner Power-Line RFI Filter. The KX-R Twenty supports programmable processor pass-through input and full-function remote control operation. It weighs approximately 18 kg and measures 17.25" W x 11.5" D x 3.75" H (43.8 cm x 29.2 cm x 9.5 cm).
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
Components that show up alongside the KX-R Twenty in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
Every pairing for the KX-R TwentyThe closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Master Line Stage's output impedance is 150Ω against the KX-R Twenty's 300Ω, its weight 27.7 kg (61 lbs) against 18 kg (40 lbs), its width 457 mm against 438 mm, and its height 140 mm against 95 mm.
The Signature MkIIa SE's output impedance is 150Ω against the KX-R Twenty's 300Ω, its weight 27.7 kg (61 lbs) against 18 kg (40 lbs), its width 457.2 mm against 438 mm, and its height 139.7 mm against 95 mm.
The PST-100 MKII's output impedance is 150Ω against the KX-R Twenty's 300Ω, its weight 25 kg (55 lbs) against 18 kg (40 lbs), its width 400 mm against 438 mm, and its height 180 mm against 95 mm.
The 2110's output impedance is 100Ω against the KX-R Twenty's 300Ω, its weight 28.6 kg (63 lbs) against 18 kg (40 lbs), its width 460 mm against 438 mm, and its depth 310 mm against 292 mm.
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