REX vs NAT Audio Symmetrical
The Symmetrical's signal-to-noise is 95 dB against the REX's 100 dB, its thd 0.030% against 0.005%, and its output impedance 70Ω against 200Ω. Both share class (Tube).
AI-generated product photo — not official manufacturer imagery.
The Balanced Audio Technology Rex preamplifier is a high-end, two-box component consisting of a vacuum-tube power module and a separate control module. It features a fully balanced design with eight 6H30 tubes in the control module and a power module containing two 5AR4, four 6C19, two 6H30, and two 6C45 tubes. The Rex offers 5 XLR inputs and 2 XLR main outputs plus 1 XLR tape output. It has a volume control with 140 steps of 0.5 dB resolution, a frequency response from 2 Hz to 200 kHz, maximum gain of 17 dB, and maximum output of 50 V. Distortion at 2 V output is extremely low at 0.005%, with noise at -100 dB unweighted. The input impedance is a minimum of 100 kΩ and output impedance is 200 Ω. The control and power modules weigh 40 lbs and 36 lbs respectively, with dimensions of 19" W x 5.75" H x 15.5" D each. The Rex is designed for audiophiles seeking exceptional transparency, dynamic scale, and textural insight in music reproduction. It includes a remote control and switchable absolute polarity for user convenience.
Amplification power output and characteristics
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
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Symmetrical's signal-to-noise is 95 dB against the REX's 100 dB, its thd 0.030% against 0.005%, and its output impedance 70Ω against 200Ω. Both share class (Tube).
The Reference 1's power @ 8ω is 90W against the REX's 50W, its thd 0.015% against 0.005%, and its output impedance 400Ω against 200Ω. Both share signal-to-noise (100 dB).
The KRC-HR's signal-to-noise is 96 dB against the REX's 100 dB, its thd 0.010% against 0.005%, its output impedance 5Ω against 200Ω, and its input impedance 47000Ω against 100Ω.
The VPA's output impedance is 4Ω against the REX's 200Ω. Both share power @ 8ω (50W), signal-to-noise (100 dB), and class (Tube).
Conrad Johnson GAT
Octave Audio V 70 SE
The specs and the pairings above are open to everyone. Sign up and you get the system builder, the assistant, a compatibility check against the gear you already own, and a watch on this product so a price or pairing change reaches you.
Sign up free