ENGLISH ACOUSTICS 21C AMPLIFIER
Encompassing English Heritage
Nestled in the heart of the West Country, English Acoustics was established in the spring of 2015. This innovative company came to fruition simply from a love for classic design and modern technology; and the realisation that we aren’t the only ones with an appreciation for high end valve amplifiers and superior sound quality.
At the core of our company resonates a firm belief that British manufacturing and design are key to future success and development. Investing in quality, value, safety and high standards also make us advocates for the other British manufacturers that not only contribute towards our products; but stand by the ‘Made in Britain’ collective mark with pride.
The English Acoustics Stereo 21c is a modern day classic. Exclusively British-made and notably benefiting from the finest transformers along with a chassis that are both designed and manufactured in England. Inspired by our favourite vintage amplifiers, the Stereo 21c moves forward with it’s contemporary design cues and safety devices fitted throughout. This means you can enjoy the warm sound that the ‘21c produces whilst feeling reassured that any potential risk has been considered and minimised.
Certain aspects of the revered inner workings have now been enhanced using our own mains and audio transformer design. This means that the amplifier runs cooler and produces exceptional low-end performance. Plus, smoother roll-off at the top-end whilst retaining the classic punchy mid-range. What sets the English Acoustics Stereo 21c apart is that you can now have one hand-built for you in any colour you wish; the only limit is your imagination. To combat this personal decision, we have produced twelve in-house colours covering the full spectrum to help you set the tone. These colours have been affectionately devised from our own local landmarks, such as Lansdowne Gold, Marlborough Red, Avebury Grey and Brunel Blue to name but a few.
Specifications
Noise -90dB ref 1W output
Frequency 13Hz to >50KHz (0, -3dB) at full power typically 58KHz at -3dB
14.5W rms into 6-8ohms
~450mv rms for full output (achieved by a 5:1 passive attenuator at the input )
distortion at full power <0.1% typically <0.07% at 1KHz.
Safety features:
HT overcurrent cut out
Output tube overcurrent cut out
Tilt Switch cut out
Vibration cutout
Mains Transformer over temp cutout
Soft start
Medical grade twin fuse power input filter
MOV mains spike suppressor
Design highlights
Custom paper in oil capacitors specially made for English acoustics
Q band fitted to mains transformer
Silver mica signal capacitors used at critical circuit points
>20,000 hour capacitors used at other critical circuit points
Transformers wound to our our spec, right here in wiltshire
Automotive grade paint finish
CNC machined transformer cases from Solid aluminium
2mm Steel Chassis, tig welded
3mm recessed laser cut base plate
A2 grade marine steel bolts used throughout
Ceramic gold plated valve sockets.
Digital Hour meter
Neutrik audio connectors