Conrad-Johnson Premier Eleven Vacuum Tube Power Amplifier – 70 Watts Per Channel – High-End Audiophile Tube Amplifier

This item will be thoroughly checked, tested, and serviced one last time before shipping to ensure this amplifier is performing as it should.

American tube amplifier craftsmanship. Extraordinary musicality. High-end audiophile performance.

Some amplifiers simply make music louder. Others bring music to life. The Conrad-Johnson Premier Eleven belongs firmly in the second category.

Introduced in 1993, the Premier Eleven represents the exceptional engineering and craftsmanship that made Conrad-Johnson one of the most respected names in high-end American audio.

Designed as a stereo version of the company's acclaimed Premier Eight, the Premier Eleven delivers an impressive 70 watts per channel RMS through its sophisticated vacuum tube amplification circuitry.

Unlike conventional solid-state amplifiers, the Premier Eleven uses a carefully engineered tube output stage to deliver the natural tonal character, dimensional soundstage, and musical detail that dedicated tube enthusiasts appreciate.

At the heart of this amplifier are four 6550 output tubes operating in an ultralinear push-pull configuration, supported by premium-quality input and driver circuitry.

Conrad-Johnson paid particular attention to the power supply, using polypropylene capacitors and proprietary polystyrene components rather than relying on conventional electrolytic capacitors for the main storage reservoir.

The result is an amplifier designed around exceptional component quality, careful circuit engineering, and musical performance.

Its striking open-chassis design showcases the glowing vacuum tubes, substantial transformers, and beautiful construction that make this amplifier as visually impressive as it is musically rewarding.

The Premier Eleven isn't just an amplifier. It's a serious piece of high-end audio engineering.

WHY YOU WANT THIS AMPLIFIER

• 70 watts per channel of tube power: Plenty of output for a wide range of quality loudspeakers, with both channels driven.

• Four 6550 output tubes: A powerful push-pull ultralinear output stage designed for excellent dynamics, control, and musical expression.

• Selectable ultralinear and triode operation: Choose between 70 watts per channel in ultralinear mode or approximately 30 watts per channel in triode mode, depending on the version and configuration.

• Premium power supply design: Polypropylene capacitors and polystyrene components contribute to the amplifier's carefully engineered power supply.

• High-quality output transformers: Proprietary wide-bandwidth transformer design for excellent frequency response and signal transfer.

• Natural tube sound: Beautifully rendered vocals, rich midrange, detailed highs, and an engaging presentation.

• Point-to-point-style premium construction: Carefully assembled circuitry and quality components throughout.

• Classic American high-end audio: A highly regarded Conrad-Johnson design built for serious audiophiles and music lovers.

TECHNICAL SPECIFICATIONS

Amplifier

• Type: Stereo vacuum tube power amplifier

• Power output: 70 watts per channel RMS in ultralinear mode

• Triode operation: Approximately 30 watts per channel RMS

• Output impedance: Selectable 4, 8, and 16 ohms

• Total harmonic distortion: No more than 1% at rated output under specified test conditions

• Frequency response: 20Hz–20kHz

• Input sensitivity: Approximately 0.9 volts to rated power

• Input impedance: 100K ohms

• Signal-to-noise ratio: Approximately 96dB below rated power

• Phase: Non-inverting

• Output stage: Push-pull ultralinear vacuum tube design

VACUUM TUBE COMPLEMENT

• 4 × 6550 output tubes

• 2 × 5751 input tubes

• 2 × 6FQ7 / 6CG7 driver tubes

• Total: 8 vacuum tubes

CONNECTIONS & FEATURES

• Single stereo RCA input

• Left and right speaker outputs

• Selectable 4, 8, and 16-ohm speaker connections

• Individual output tube bias adjustment

• Bias monitoring indicators

• Power switch

• Protective tube cage

PHYSICAL SPECIFICATIONS

• Width: 17-1/2 inches

• Height: 7-1/4 inches

• Depth: 15 inches

• Net weight: 48 lbs (21.8 kg)

• Packed weight: Approximately 55 lbs (25 kg)

WHY BUY FROM FACTORY HI-FI?

At Factory HiFi, we appreciate equipment that was built to last and designed to reproduce music the way it deserves to be heard.

Every amplifier we sell deserves attention to detail, proper testing, and the care necessary to bring classic audio equipment back to life.

The Conrad-Johnson Premier Eleven is not just another power amplifier. It is a highly regarded piece of American high-end audio engineering, combining premium vacuum tube technology, exceptional component quality, and the musical presentation that has made Conrad-Johnson a favorite among serious audiophiles.

Whether you're building a dedicated two-channel listening system, upgrading to high-end tube amplification, or adding a respected Conrad-Johnson component to your collection, the Premier Eleven is an amplifier worth owning.

70 watts of pure tube power. American craftsmanship. High-end audiophile performance.

Factory HiFi – Bringing Great Audio Back to Life.