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Icon Audio Valve Amplifiers

Home/Icon Audio Valve Amplifiers
Icon Audio Valve Amplifiers 2017-06-12T17:13:19+00:00

We are dealers for Icon audio, covering the Lancashire, Cheshire and Manchester areas. We can get any model in the range, and aim to keep at least 4 models in stock and available to audition at any time.

Icon Audio are a small company located in Leicester UK. They are dedicated to the design and production of pure valve (or tube) amplifiers and hi fi equipment.

They are passionate about the sound of vintage British and USA valve amplifiers like LEAK QUAD MACINTOSH & DYNACO, believing that despite modern technology, the system of using valve amplifiers has much to offer in the reproduction of music.

We currently have the Icon Audio Stereo 20, Stereo 25, Stereo 30 and Stereo 40 mk3 in stock and on dem. Please come and have a listen.

Stereo 20pp £799.99

In a rapidly changing world it is nice to have some traditional values. In 1955 The British company H. J. Leak designed the Stereo 20 using the new Mullard EL84, and ECC83 valves. It was an instant worldwide success for quality performance and value. These vintage amplifiers can now fetch over £1,500!

Our new Stereo 20pp is inspired by this design.

Ideal for the smaller room, or loudspeakers that do not require a large amount of power. Our circuit uses less feedback and designed to be compatible with the higher output that CD players have as well as any almost any other source including MP3/WAV etc.

This amplifier has a very transparent quality, being particularly suited to acoustic and orchestral music, but used with appropriate speakers is capable of performance way beyond your expectations!

The inclusion of a dedicated headphone winding on the output transformers guarantees the best possible performance. Giving a closer intimacy than is possible that with solid state headphone amplifiers.

The diminutive EL84 output tube is very efficient much loved power tube, enabling the use of a smaller power supply and output transformers giving economy of size and materials which is reflected in the final price.

The EL84 has a very high pedigree having many variants in radio, TV and radar and apparently was even used in the firing mechanism of nuclear missiles!

Very affordable, punches way above its weight/price, low maintenance. Delightful airy quality. Small size.

Specification & Features

• EL84 output valves
• ECC83/ECC82 double triodes valves
• Class A, all Triode front end
• Ultralinear output circuit
• Supplied in triode form upon request (FOC)
• Hand wired point to point components
• 15 Watts per channel Ultralinear
• Suitable for 4 to 8ohm loudspeakers
• Freq response 20-20Khz
• Attractive valve cover included in the price
• Solen hi fi quality audio capacitors
• Silver PTFE audio cable
• Gold plated Input & speaker terminals
• 3 line Inputs for CD, Tuner, MP3 etc
• 250 my sensitivity for full output
• 220/240volts, 100w
• 27cmW, 30D, 16H cm 10kg
• Comprehensive manual supplied
(Specifications subject to change, errors & omissions excepted November 2016)

Stereo 30se £1999.99

A Versatile Affordable SE Solution! (SE= single ended.)

The ST30SE is a medium powered integrated amplifier offering warmth and colour in an ultra-smooth way to delight almost anyone who is sensitive to the many harsh and clinical presentations offered by others. The ST30se offers absolute listening quality through simplicity of design and pure “Class A” operation. This is achieved by using a very simple design, high quality construction and our unique transformers designed and manufactured “in house”.

Previously, affordable Single Ended designs have been low powered at around 9-13w. The excellent new KT150 valve enables more than double this power for the same cost.

The all-important high definition drive circuit for the KT150 output valve is achieved by using the superb 6SN7 valves in “Cascode” mode to get the best qualities of SE* without the drawbacks of flabby bass, hum and low power that many designs suffer.

The ST30se is optimised for Triode as well as UL operation. 18 Watts being ample for most situations. Especially with our new “Full Range M” or MFV3 speakers and other designs such as the classic Tannoys, the ST30SE will work well with any speaker of about 90dB or more.

Good sensitivity from the built in “passive” pre amp ensures good results from virtually any type of input.

The “easy bias” meter enables simple checking that the KT150 is at optimum performance, the meter also gives an indication of the output power. Very useful when you may need to know if you are likely approach the maximum available power


Ideal for: most situations where adequate Single Ended power is required by someone wanting a very relaxed sound. Well suited to larger more efficient speakers. Delightful listening quality. Easy to maintain, Low power consumption. Economical valve replacement cost. Low maintenance design.

Specifications and Features

100% Pure Class A output power
Class A, all Triode driver stage
Output power Triode (18W). Ultralinear (28W)
Choke regulated power supply
2x KT150 output valve
3x 6SN7 (CV181) double triode
All hand wired point to point
Signal to noise level -98db
Freq resp 20 – 20kHz +0 –0.8db 45kHz -3db(8w)
THD typically less than 0.5% 1khz (8w)
4 & 8 ohm loudspeaker taps
Low feedback design
Switchable gain control.
SCR audiophile caps, Jensen upgrade option
Silver plated copper PTFE audio cable
Tertiary winding output transformers
Big custom wound PSU Choke
Gold plated Input & speaker terminals
200mv (high) & 500mv (low) input sensitivity.
220/240volts 160w approx
Size 380mm wide 300mm deep 240mm high
Packed weight
Typical values @ 235v AC (Specifications subject to change)

*SINGLE ENDED: is where only one output valve is used so the one valve has to “push and pull” on its own. Although this limits the power available, the lack of “phase splitter” stage required by “push pull” amps means that the mid-range and upper frequencies have less “processing” which gives a smoothness and charm to the sound not found in other designs.

*100% Pure Class “A”: Because both the driver and output valves are drawing full power even at zero volume, the valves never “switch off” or go into a “low” state. This thermal and power stability enhances the reproduction of macro dynamics and sound stage spaciousness.

(Specifications subject to change, errors & omissions excepted November 2016)

St40 IIIm £1899.99

Looking for the best value in a integrated amplifier? Not only is the Stereo 40 MKIIIm an exceptional performer at any price, but is feature packed for maximum versatility to match almost any situation or needs.

All we think that a good valve amplifier should have:
Valve Rectifier (centre valve) gives a very smooth sound, normally only fitted to expensive amplifiers. We use the excellent 274B WE design.
Choke Regulated Power Supply
Working with the valve rectifier the large choke gives super-smooth power regulation for a silent background.
Tertiary Transformers have an extra (third) winding which reduces distortion, using less feedback. Our large handmade output transformers are among the finest available. They are more expensive and difficult to make, but worth the effort.
Low Feedback Too much feedback takes the spark and spontaneity from the sound of the ST40 IIIm
Wide range of valves
The Stereo 40 is designed to work with a wide range of output valves. You can choose between EL34 or KT88 (or even KT66/77, 6CA7, 6550). So you can experiment in the future and get the sound best for you.
Ultralinear or Triode?
For sixty years hi fi fans have argued which sound is better. With the Stereo 40 III you have the choice of both at the flick of a switch. It is like having two amplifiers in one! Most Hi Fi fans prefer the sound of triode valves, especially for acoustic music.
6SN7 and 6SL7
More relaxed than their miniature cousins, these larger driver valves are the best in their class for their musical sound and longer life. Try our new David Shaw types or choose from TJ/Full Music, SG Treasure, Psvane, Vintage USA/Russian types.
Remote Control
It’s hard to get exactly the right volume in your listening position. Now you can make fine adjustments in your arm chair, to get precisely the right sound level.
Plenty of Power

40 watts of power is enough to fill a medium to large room with a high volume of musical excellence.

This new design is finished with a fine metallic paint work that is easy to clean and is wear resistant. A 10 mm solid alloy front panel with matt black matching knobs. And our famous Plexiglas valve cover to create a stunning visual impression.

On the scales at 25Kg this amplifier is 9Kg heavier than the ST40 MK I. No lightweight in quality or performance, a true “high end amplifier” at a low price.

We can offer a range of upgrades including Shuguang “Treasure” valves and Russian types. As well as the superb Jensen “oil in paper” capacitors. Ask us for a quote.

Specifications and Features
• Comprehensive manual supplied
• Remote Control motorised pot for best quality
• All hand wired point to point
• No printed circuit board to ‘colour’ the sound
• Japanese ALPS volume pot.
• Class A, all Triode front end
• Output circuit Ultralinear or Triode switchable
• 4x EL34/KT88 precisely matched for best performance
• 1x 6SL7/6N9 first stage valve, 2x 6SN7 phase splitter
• 274B/GZ34 valve rectifier for ‘Soft start’ & smooth sound
• Standby switch to save valve life and power
• 2x 40w RMS per channel output*
• 2x 20 Watts RMS in Triode mode
• Signal to noise level -90db
• Freq response better than 20hz-20kHz +0 – 1db
• Power bandwidth 10hz-30khz
• Total harmonic distortion 0.15% at full output
• Suitable for 4 to 16ohm loudspeakers
• Supplied with attractive valve cover.
• Choke regulated power supply
• Solen audio caps, or Jensen copper foil in paper and oil
• Silver PTFE audio cable
• Custom hand wound Tertiary output transformers
• Gold plated Input & speaker terminals
• Four line inputs – CD, Tape, Tuner, Aux
• Tape monitor circuit with ‘Record Out’
• 250mv input sensitivity.
• Power requirement 220-240volts (115v adjustable)
• 76 Watts standby, 140 W Min, 240 W max.
• 39cmW, 41D, 23H, 25kg (a minimum of 30mm height should be added to allow for ventilation)
(Specifications subject to change)