Sphinx v3 vs Unison Research Unico Secondo
The Unico Secondo's thd is 0.500% against the Sphinx v3's 0.100% and its damping factor 50 against >1000. Both share power @ 8ω (100W) and power @ 4ω (200W).
AI-generated product photo — not official manufacturer imagery.
The Rogue Audio Sphinx V3 is a dynamic, transparent, and musical hybrid integrated amplifier that combines a pure tube mu-follower preamplifier with solid-state power amplification. It provides 100 watts per channel into 8 ohms (200W into 4 ohms), featuring a redesigned MM/MC phono section with user-adjustable 44/60dB gain and loading options, discrete MOSFET headphone amplifier, tube-driven active outputs for subwoofers or bi-amping, and four inputs (phono, line 1-3). Hand-built in the USA with a custom 375VA toroidal transformer, massive linear power supply, matched 12AU7 tubes, Alps volume pot, gold-plated RCA inputs and binding posts, and machined aluminum faceplate. It includes slow-start sequencing, low power consumption (standby 6W, full power up to 385W), and a 3-year warranty (6 months on tubes). Optional metal remote control available. Note: A newer 'Magnum' upgrade version exists at higher price.
Amplification power output and characteristics
Analog signal output specifications
Phono stage 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 Sphinx v3 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Unico Secondo's thd is 0.500% against the Sphinx v3's 0.100% and its damping factor 50 against >1000. Both share power @ 8ω (100W) and power @ 4ω (200W).
The 3B-ST's power @ 8ω is 120W against the Sphinx v3's 100W, its damping factor >500 against >1000, and its thd 0.007% against 0.100%. Both share power @ 4ω (200W).
Both turn up in the same documented systems.
The Stereo 90 Magnum's power @ 8ω is 90W against the Sphinx v3's 100W and its class AB against D. Both share thd (0.100%) and output voltage (1.0V RMS).
The PM-15S2's power @ 8ω is 90W against the Sphinx v3's 100W, its power @ 4ω 140W against 200W, its thd 0.050% against 0.100%, and its damping factor >100 against >1000.
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