Cambridge Duo MM/MC Phono Stage
The one box that lets any turntable, and any cartridge, sing through your system.
Your amp forgot about vinyl
Modern amps often skip the phono input, and even when they include one, it's usually built to a price and set up for one type of cartridge. Plug a good turntable into a line input and you get a thin, quiet, lifeless sound. The record isn't the problem. The missing phono stage is.
Why we chose the Duo
We chose the Duo because it handles both moving-magnet and moving-coil cartridges, so it works with almost any turntable you own now or upgrade to later. A switch-mode power supply and surface-mount circuit board keep the noise floor low, so quiet passages stay quiet and detail comes through clean. There's also a proper 6.35mm headphone jack on the front, so you can drop the needle and listen privately late at night without waking the house or firing up the main amp.
What the specs won't tell you
Any cartridge, now or later. The MM and MC inputs mean you're not locked in. Start with the moving-magnet cartridge on your current deck, and when you upgrade to a moving-coil down the road, the Duo is already ready for it. One box covers both paths.
A quiet background that lets vinyl breathe. The switch-mode supply and short signal paths keep hum and hiss down, so the music sits against a clean, black background. A built-in subsonic filter tames low-frequency rumble from less-than-perfect records and warped pressings, and a balance control lets you even out a cartridge that's slightly off.
Records after hours. The front-panel headphone jack, with its own volume dial, is genuinely handy for late-night listening. It lets you enjoy a record privately without turning on the whole system.
What the reviewers heard
What Hi-Fi? awarded the Duo five stars, calling its phono performance excellent and the built-in headphone amp a welcome bonus, and praising its MM and MC flexibility. Reviewers consistently note how quiet and composed it sounds for the money, with a natural, detailed presentation that punches above its price.
The Audio Two verdict
This is the phono stage we recommend when someone has a good turntable and a modern amp with no phono input, or wants to get more out of the deck they already own. It fits any cartridge, stays quiet, and the headphone jack is a genuine bonus. If you're serious about vinyl but your amp isn't, the Duo bridges the gap.
"The Cambridge Duo's phono performance earns it five stars."
— What Hi-Fi?
Tech you can hear
| What You Hear | Why It Happens |
| Works with any turntable | Switchable moving-magnet and moving-coil inputs |
| A quiet, black background | Switch-mode power supply, surface-mount circuit board |
| Cleaner playback from imperfect records | Built-in subsonic filter |
| Even left-right balance | Rear balance control |
| Private late-night listening | Front-panel 6.35mm headphone output with volume |
| Full, natural vinyl sound | 39dB (MM) / 60dB (MC) gain, low distortion |
Technical highlights
- Moving-magnet and moving-coil compatible, switchable
- Gain: 39dB (MM), 60dB (MC); nominal output 300mV
- Input impedance: 47k ohm (MM), 100 ohm (MC); 100pF
- Built-in subsonic filter and balance control
- Front-panel 6.35mm headphone output with volume control
- Switch-mode power supply, auto power-down after 20 minutes
- RCA inputs and outputs; 48 x 215 x 159mm, 0.95kg
Why choose Audio Two
Audio Two ships across Canada. If you don't have access to a proper high-end dealer in your city, this is your way in, real expertise from people who've heard the system, matched the electronics, and can guide you through a decision this size.