V4 Mono vs PrimaLuna ProLogue Seven
The ProLogue Seven's power @ 8ω is 70W against the V4 Mono's 170W, its power @ 4ω 70W against 170W, and its output voltage 0.9V RMS against 1.5V RMS. Both share output impedance (100000Ω).
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The Quicksilver V4 Mono Amplifier is a hand-wired, point-to-point tube amplifier introduced in 1998 and updated in 2014 with a new output transformer to increase power output. It delivers 170 watts into 4 or 8 ohms using KT150 output tubes, though it can also use EL34s, 6550s, or KT88s. The amplifier features separate power supplies for the output stage to maintain sound quality at maximum power, and individual bias controls for each output tube with a mounted bias meter. It is designed for long-lasting performance with low screen voltage on output tubes, extending tube life to thousands of hours. The V4 is praised for its powerful, musical, and effortless sound, combining fast attack with rich harmonic resolution, and is considered a flagship model in the Quicksilver line. It has a nickel chassis with carbide black capacitor and transformer covers, weighs 51 lbs, and measures approximately 7.87" high by 13.75" deep by 16.75" wide. The amplifier comes with a 3-year parts and labor warranty and 90-day tube warranty.
Amplification power output and characteristics
Analog signal output specifications
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)
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Components that show up alongside the V4 Mono 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 ProLogue Seven's power @ 8ω is 70W against the V4 Mono's 170W, its power @ 4ω 70W against 170W, and its output voltage 0.9V RMS against 1.5V RMS. Both share output impedance (100000Ω).
The Mid Mono's power @ 8ω is 50W against the V4 Mono's 170W, its power @ 4ω 40W against 170W, and its output voltage 1.3V RMS against 1.5V RMS. Both share output impedance (100000Ω).
The Pharaoh's power @ 8ω is 185W against the V4 Mono's 170W, its power @ 4ω 350W against 170W, and its output voltage 1.0V RMS against 1.5V RMS. Both share class (Tube).
The Hydra's power @ 8ω is 100W against the V4 Mono's 170W, its power @ 4ω 200W against 170W, its output voltage 1.0V RMS against 1.5V RMS, and its class D against Tube.
KT Mono
Conrad Johnson Premier 1B
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