Cambridge Audio Alva Duo MM/MC Phono Preamp

The Cambridge Audio Alva Duo is a versatile moving coil (MC) and moving magnet (MM) phono preamplifier, designed to squeeze every last detail from your record collection. Whether you are using a standard MM cartridge or a high-end MC audiophile pickup, the Duo delivers a pristine, immersive listening experience. It combines a state-of-the-art switch-mode power supply with a precision circuit design to eliminate hum and noise, ensuring that the only thing you hear is the music. Plus, with its integrated high-quality headphone amplifier, you can enjoy the unique warmth of vinyl in private.

KEY FEATURES

• Dual Cartridge Support: Compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges for maximum flexibility.
• Integrated Headphone Amp: High-quality 6.35mm headphone output allows for private listening without turning on your main amplifier.
• Subsonic Filter: Removes low-frequency rumble caused by vinyl imperfections, protecting your speakers and cleaning up the sound.
• Balance Control: Fine-tunes the output to correct for cartridge imbalances, a rare and valuable feature in phono stages.
• Switch-Mode Power Supply: Reduces unwanted hum and noise by operating outside the audible frequency range.
• Auto Power Down: Automatically switches to standby after 20 minutes of inactivity to conserve energy.

THE VINYL EXPERIENCE, REFINED

The Alva Duo is built for those who want to explore the full potential of vinyl. Unlike many preamps that limit you to one type of cartridge, the Duo seamlessly handles both high-output Moving Magnet and low-output Moving Coil cartridges. This makes it a future-proof investment, allowing you to upgrade your turntable's cartridge down the line without needing to replace your phono stage. The internal circuitry uses surface-mounted components to keep signal paths short and interference low, delivering a sound that is open, detailed, and dynamic.

PRIVATE LISTENING, PERFECTED

Uniquely for a phono preamp, the Alva Duo features a high-performance headphone amplifier with a dedicated volume control. This allows you to plug your headphones directly into the unit and enjoy your records without disturbing others, or simply to immerse yourself more deeply in the music. The headphone output is designed to drive a wide range of headphones with the same warmth and clarity you'd expect from your main speakers.

SILENT BACKGROUND, PURE SOUND

Analog audio is susceptible to noise, but the Alva Duo fights back. Its advanced switch-mode power supply and multi-layer circuit boards are engineered to push noise and hum below the threshold of hearing. A switchable subsonic filter tackles the low-frequency "rumble" often caused by warped records or turntable motor vibration, ensuring that your amplifier power is used efficiently to drive the music, not inaudible noise. The result is a pitch-black background from which your music emerges with startling realism.

More from Cambridge Audio

Cambridge names the Alva Duo as an external phono stage for its Spira turntable, and the Alva Solo is the moving magnet only version.

The Listening Room Difference

We’re a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on trust, not hype. Whether you’re visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don’t just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.

SPECIFICATIONS