Icon Audio Stereo 25 MkII Integrated Valve Amplifier
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Icon Audio Stereo 25 MkII Integrated Valve Amplifier

  (2 Reviews)


£1,415.83 Exc. VAT |  






Icon Audio Stereo 25 MkII Integrated Valve Amplifier

Available in 2 versions:

- with EL34 Valves

- with KT88 Valves 


Not everyone can aspire to one of Icon Audios high end valve amplifiers. So Icon Audio makes amplifiers for all needs. The new ST25 MKII retains all the important features of the ST40 MKII, yet is excellent valve for money. New features include the excellent 6SN7 and 6SL7 valves for improved sound, and a headphone socket with excellent performance.

Icon Audio know that many of their customers like to experiment with different valves, so the ST25 MK II is designed to use: 6L6, EL34, 6CA7, KT66, KT77, KT88, 6550.

The simplified bias circuit means that valve replacement of the same type requires no bias adjustment.



Specification & Features

(Typical conditions EL34 valves@ 240v 50Hz. 8 Ω)
•  6L6/EL34/6CA7/KT66/KT88/6550 output valves
•  6SN7/6SL7 double triode driver valves
•  Class A, all Triode front end
•  Ultralinear output circuit
•  Can be supplied in triode output by request 15+15w
•  Hand wired point to point. No printed circuit board
•  30w RMS per channel Ultralinear
•  4 and  8ohm loudspeaker output
•  Frequency response 20-20khz +0 – 0.5db
•  THD typically less 0.2% 1kHz
•  Hand wound transformers
•  Attractive valve cover included in the price
•  Hi Fi quality Solen capacitors
•  Silver PTFE audio cable
•  Gold plated Input & speaker sockets
•  3 line Inputs for CD, Tuner, Phono etc
•  250 mv input for full output
•  220/240volts, 100w (180w max)
•  34W, 34D, 21H (overall) 17kg
•  CE, ROHS & WEEE compliant
•  Comprehensive manual supplied







Average Rating (2 Reviews):  
Write a Review and share your opinions!

Great sound
16 July 2018  | 

First I checked the bias and corrected it to 8V because we have 220V here. Then I cranked the volume, dead quiet. I thought the amp was broken. A valve amp should have a little hum or buzz. No. Dead quiet. I turned down the volume to 9 o'clock and started to spin my favourite LP. I heard the Ray Charles' silky voice singing "Georgia" as I never heard before. I am amazed. Do yourself a favour and buy this amp. I rolled various valves like Tung-Sol, Svetlš Winged C and Gold Lion KT66. I am telling you, the stock Shuguang valves are great. This am is amazing'

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8 of 8 people found this review helpful.

Icon Audio 25 MKII
16 March 2018  | 

A great amp at a good price. Quality from top to bottom. If you like tubes this could be the answer.

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9 of 9 people found this review helpful.

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