REX 3 Power Amplifier vs Audio Research Corporation Reference 80S
The Reference 80S's power @ 8ω is 70W against the REX 3 Power Amplifier's 80W, its power @ 4ω 70W against 80W, and its thd 1.000% against 3.000%. Both share class (Tube).
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The Balanced Audio Technology (BAT) REX 3 Power Amplifier is a reference-class, fully balanced vacuum-tube power amplifier using an all-triode, transformer-coupled output stage. Its balanced bridge single-ended architecture uses zero global feedback and a short signal path. In stereo configuration it supplies 80 W per channel into either 8 or 4 ohms; it can be factory-configured or converted with a wire kit to operate as a 160 W monoblock into 8 or 4 ohms. BAT specifies custom output transformers with a 5 Hz–300 kHz bandwidth and an all-aluminum chassis with revised ventilation intended to improve heat dissipation, tube longevity, and reliability. The official BAT product page remains available, so it is treated as a current product rather than discontinued.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
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Estimated price (community-sourced)
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Reference 80S's power @ 8ω is 70W against the REX 3 Power Amplifier's 80W, its power @ 4ω 70W against 80W, and its thd 1.000% against 3.000%. Both share class (Tube).
The VK-90T's power @ 8ω is 75W against the REX 3 Power Amplifier's 80W and its weight 39.92 kg (88 lbs) against 45.36 kg (100 lbs). Both share thd (3.000%) and class (Tube).
The MB-125's power @ 8ω is 100W against the REX 3 Power Amplifier's 80W, its power @ 4ω 130W against 80W, and its class AB against Tube. Both share thd (3.000%).
The V 80 SE's power @ 8ω is 120W against the REX 3 Power Amplifier's 80W, its power @ 4ω 150W against 80W, and its thd 0.100% against 3.000%. Both share class (Tube).
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