Cambridge Audio Duo (Graphite) Moving Coil & Moving Magnet Phono Preamplifier/Headphone Amp

Cambridge Audio Duo (Graphite)

Moving Coil & Moving Magnet Phono Preamplifier/Headphone Amp

In stock
£249.95
”Rarely does Cambridge fire too wide of the mark, but the Duo hits right at the centre of the target.”– ‘What Hi-Fi’ – 5 Star review.

Quality headphone amp

If you want to hear every nuance and background detail of your favourite music then listening with headphones takes some beating. Use the dedicated headphone amp built into the Duo and you’ll experience a whole new level of detail. With a precise volume control you’ll get exactly the right level – whatever your choice of headphones.

Perfect for amps without a phono preamp built-in
Many amplifiers no longer come with a built-in phono preamp, which is fine if you don’t use vinyl but not so good if you want to spin some records. The Cambridge Audio Duo is a dedicated phono preamp, meaning you can add a record deck to just about any amp or system with a standard AUX input. This means your choice of stereo amp or receiver is greatly expanded and, of course, you can retain the Duo phono preamp if you upgrade your main amp.

Perfect for amps with a phono preamp built-in!
Even if your main amplifier already has a phono preamp built-in, the chances are that the one inside the Duo is considerably better. Using a dedicated, switch mode power supply, the Duo is far quieter than most built-in phono preamps. The revised circuit board layout with surface-mount components further reduces noise and distortion. Factor in the shielded casing and you’ll simply hear more music and less background noise.

MC cartridge compatibility
One of the biggest advances over its little brother, the Solo, is the ability to amplify MC (Moving Coil) cartridges. These have an even lower output than MM (Moving Magnet) cartridges and require dedicated amplification. Once correctly amplified, the sound quality is stunning with a smoother yet more detailed sound. If you're serious about vinyl then fitting a good quality MC cartridge is an upgrade that you won’t regret.

Subsonic filter
Not all records are pressed the same – due to the poor quality of vinyl used, some sound considerably nosier than others. Wear and tear can play its role in reducing the quality, too. With its subsonic filter, the Duo filters out low frequency rumble; reducing distortion and protecting your speakers’ woofers from excessive wear.

Give your system a double whammy upgrade, with the Cambridge Audio Duo.

6 Year Guarantee
£24.95 Fully refundable if unused

Add our 6 Year Guarantee to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 14 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Free UK delivery on orders over £50

Next working day delivery and timed options available. Please see checkout for further details.

Buy now, pay later available
by phone, on items over £500

We offer 6 month interest free options. Call our Telesales team for details.

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Subject to application, financial circumstances and borrowing history. Ts&Cs apply. 19.9% APR representative. Find out more

 Disabled assistance

All products that are available to purchase on the Richer Sounds website can be delivered free to blind, partially sighted or those with a disability.

Please contact web after sales for more info.
For delivery of in-store only deals, please contact your local store for more details.
T&Cs apply - see our delivery page.
This product is available to demo in your local store – by appointment!
Click here for store details & book your appointment today.


”Rarely does Cambridge fire too wide of the mark, but the Duo hits right at the centre of the target.”– ‘What Hi-Fi’ – 5 Star review.

Quality headphone amp

If you want to hear every nuance and background detail of your favourite music then listening with headphones takes some beating. Use the dedicated headphone amp built into the Duo and you’ll experience a whole new level of detail. With a precise volume control you’ll get exactly the right level – whatever your choice of headphones.

Perfect for amps without a phono preamp built-in
Many amplifiers no longer come with a built-in phono preamp, which is fine if you don’t use vinyl but not so good if you want to spin some records. The Cambridge Audio Duo is a dedicated phono preamp, meaning you can add a record deck to just about any amp or system with a standard AUX input. This means your choice of stereo amp or receiver is greatly expanded and, of course, you can retain the Duo phono preamp if you upgrade your main amp.

Perfect for amps with a phono preamp built-in!
Even if your main amplifier already has a phono preamp built-in, the chances are that the one inside the Duo is considerably better. Using a dedicated, switch mode power supply, the Duo is far quieter than most built-in phono preamps. The revised circuit board layout with surface-mount components further reduces noise and distortion. Factor in the shielded casing and you’ll simply hear more music and less background noise.

MC cartridge compatibility
One of the biggest advances over its little brother, the Solo, is the ability to amplify MC (Moving Coil) cartridges. These have an even lower output than MM (Moving Magnet) cartridges and require dedicated amplification. Once correctly amplified, the sound quality is stunning with a smoother yet more detailed sound. If you're serious about vinyl then fitting a good quality MC cartridge is an upgrade that you won’t regret.

Subsonic filter
Not all records are pressed the same – due to the poor quality of vinyl used, some sound considerably nosier than others. Wear and tear can play its role in reducing the quality, too. With its subsonic filter, the Duo filters out low frequency rumble; reducing distortion and protecting your speakers’ woofers from excessive wear.

Give your system a double whammy upgrade, with the Cambridge Audio Duo.
Brand Cambridge Audio
Colour Graphite
Weight (KG) 0.95
Dimensions HxWxD (mm) 48 x 215 x 159
Rated 5 out of 5 by from Great all round I bought this a few weeks ago, and could not be happier, it has rejuvenated the sounds off my albums, listening through phones, I'm hearing stuff that I never heard on my collection
Date published: 2020-10-11
Rated 5 out of 5 by from Excellent sound. I recently bought this phono pre-amp and it’s made a huge difference to the sound of my vinyl collection, everything is so clear and sound quality is excellent. This also works amazingly with headphones, just plug them in, sit back and listen. I’m so pleased with this purchase.
Date published: 2020-08-28
Rated 5 out of 5 by from Excellent quality and sound had the cambridge duo a week but on the very first listen it was a massive sound upgrade on the good cambridge azure 640p it replaced and was a first step on a planned system upgrade, absolute bargain & sound to match. Did'nt need the headphone facility but tried it out & it Did'nt quite match the one in my current audiiolab but not a negative & still up tothe job if you need it.
Date published: 2020-08-03
Rated 5 out of 5 by from Match made in heaven I bought this phon pre-amp to replace an aged three box NVA (high quality in its day). I run a high quality turntable set up (LinnLP12 and moving coil) The Linn has never sounded this good. Setting up was a breeze. I enabled moving coil playback through Cambridge's own Duo and the Ittok AT OC9 combination worked as if it were a custom build costing a great deal of money. Smooth detailed power with that foot tapping bass so renowned by Linn aficionados. This is a first rate pre-amplifier for £250. I am very pleased.
Date published: 2020-05-10
Rated 5 out of 5 by from Simply a quality product Had for a few weeks and works perfectly with my current set up, headphone amp is a brilliant addition.
Date published: 2020-04-25
Rated 5 out of 5 by from Great all round package Stylish and easy to setup, with clear instructions on how to set up. A perfect partner for any quality set up
Date published: 2020-03-16
Rated 5 out of 5 by from Great improvement to my old phono! I have a Revolver turntable which I bought over 30 years ago. Prior to connecting the Cambridge Audio Duo I was getting a lot of 'crackling' static from my records. Since connecting the Cambridge Audio Duo the 'crackling' has decreased and the quality of the sound has improved. The main reason I bought this was because of the headphone socket (I also have a Cyrus II which is about 20 years old and doesn't have a headphone socket!), which in itself is worth it - I love my Cyrus and didn't want to replace it - but there was the added bonus that it also improved the quality of the sound. The staff were really good and very helpful and knowledgeable - I will definitely be going there again!
Date published: 2020-03-02
Rated 4 out of 5 by from Fantastic bit of kit but.... So after trawling through online stores for tube pre amps, and failing miserably to find a good one, I decided to go for the Cambridge Audio Duo. Why? Because it had great reviews, and even friends had commented on how good this unit is. It performs flawlessly with my Denon DL110 MC cartridge. My only gripe with this unit, and you may or may not agree with me, is that if like me, you frequently swap cartridges from MC to MM, then you have to Physically swap the RCA inputs on the back of the unit, and then switch the input on the front. It would make much better sense to have one single input on the rear, with a switchable mode on the front. That’s the only down fall to this otherwise near perfect pre-amp. Hence the four star rating. If you can cope with having to swap inputs over, or you really don’t need to, then I have no hesitation in recommending this little beauty. Well worth the price tag.
Date published: 2020-03-02
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£249.95
Cambridge Audio Duo (Graphite) is rated 4.9 out of 5 by 35.
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Buy by phone Call our national Telesales team on
0333 900 0093
Please call your local store Members of our team are happily working from home to provide advice, info on stock and other help. They can also process sales and arrange delivery direct from our warehouse.

6 Year Guarantee
£24.95 Fully refundable if unused

Add our 6 Year Guarantee to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

Fully refundable if unused

6 YEAR GUARANTEE COSTS JUST £9.99 ON ALL ITEMS UNDER £100, OR 10% OF PURCHASE PRICE ON ANYTHING OVER £100.

We think you’ll agree that our 6 Year Guarantee offers fantastic value. What’s more, if you don’t use it in the 6 year period, we’ll refund the cost of it. You really can’t say fairer than that!
Plus, if we can't fix a fault, we will give you a replacement.
Find out full details here.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 14 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Free UK delivery on orders over £50

Next working day delivery and timed options available. Please see checkout for further details.

Buy now, pay later available
by phone, on items over £500

We offer 6 month interest free options. Call our Telesales team for details.

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Subject to application, financial circumstances and borrowing history. Ts&Cs apply. 19.9% APR representative. Find out more

 Disabled assistance

All products that are available to purchase on the Richer Sounds website can be delivered free to blind, partially sighted or those with a disability.

Please contact web after sales for more info.
For delivery of in-store only deals, please contact your local store for more details.
T&Cs apply - see our delivery page.