Chandler Unveil REDD.47 Mic Pre

Very exciting news for fans of vintage gear: Chandler Limited and Abbey Road are now shipping re-built vintage models. Read on for more…

Press Release


Highly coveted by sound engineers and music technology enthusiasts, the REDD.47 microphone pre-amplifier is most closely associated with the sound of The Beatles’ music recorded in Abbey Road’s Studio Two between 1964 and 1968.

Today, 50 years later, Abbey Road Studios revives this legendary sound with a new incarnation of the famous REDD.47 in conjunction with Chandler Limited, who are now shipping these extraordinary pre-amplifiers to dealers worldwide.

REDD.47 Amplifier Origins

The origins of the REDD.47 began at Abbey Road Studios’ technical division – the Record Engineering Development Department, in 1958. The REDD.47 line amplifier was designed as the replacement for Telefunken’s V72S. The latter was a specially modified version of the Telefunken V72 valve amplifier, used in the early EMI REDD mixing consoles at Abbey Road Studios.

The REDD.47 tube amplifier was introduced as the plug-in all-purpose line amplifier component for EMI’s next generation REDD.51 mixing console, first built in 1959. However, Abbey Road’s Studio Two, home to the majority of The Beatles’ recording sessions, only received its REDD.51 mixing console in 1964. The REDD.47 left its unmistakable sonic character on every Beatles record from 1964 to 1968.

REDD.47 Pre-Amp today


Abbey Road Studios and Chandler Limited’s re-imagination of the REDD.47 realizes the punchy, aggressive sound of the original pre-amplifier, while adding new features required for the rigours of today’s recording studio environment. One of the features of the REDD.47 design is increased gain, allowing a range of tonal options from pristine clean sound to classic rich, saturated tone with up to 2% harmonic distortion before clipping. The REDD.47 pre-amp easily reproduces the distortions heard on The Beatles’ ‘Revolution’.

Now Shipping

With the first REDD.47 pre-amps shipping to Chandler Limited’s worldwide distribution and dealer network, Abbey Road Studios’ Head of Audio Products, Mirek Stiles said “Abbey Road Studios is proud to see the legendary REDD.47 microphone pre-amp brought back to life as a hardware unit. The distinctively warm and sometimes aggressive sound the REDD.47 is known for has made a huge impact on some of the most important historical recordings of all time. It’s very exciting to know the famous ‘edgy treble’ sound will now be available to engineers, producers and artists all over the world.” Chandler’s founder and Chief Designer, Wade Goeke, added “The REDD.47 is top of the heap in both sound and history.”

To learn more about the Chandler Limited REDD.47 Pre-Amp, visit