Icon Audio HP8 MKII Headphone Amplifier
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Icon Audio HP8 MKII Headphone Amplifier

  (5 Reviews)


£915.83 Exc. VAT |  |

Icon Audio HP 8 MKII Headphone Amplifier

The conventional way to provide a headphone output on an amplifier is to drop the power through a resistor. This has a big problem that it provides very high source impedance (rather like a weak battery) the effect of this is to give very “Low FI” results. Ideally headphones should be driven from small high quality amplifiers. Many headphone amplifiers use small “microchip” amps which although are a better solution still do not provide ideal matching to the wide range of headphones available.

The HP8 MKII is in fact a miniaturised pure valve hi fi amplifier. Icon Audio use a custom wound multi-tap output transformer which provides perfect matching to virtually any headphone load. They start with a substantial mains transformer with matching power supply and two output transformers. The HP8 MK II tops the scales at 7kg, giving you an idea of how much iron you get for your money! Like their other models the HP8 MKII has no printed circuit board and is all hard wired with top quality components. They use silver Teflon audio cable, gold plated terminals and the famous “ALPS” volume pot for sonic purity.


The first stage gain uses the excellent JJ 12AX7. This wonderful valve has exceptional detail and fluidity. Its smoothness complements the super 6SN7 (the best hi fi valve ever?). This combination will give you a simply stunning insight into inner detail of your favourite recordings whether Analogue or digital. Like Icon's other amplifiers, close attention has been paid to the finish of the HP8 MKII. It uses the same “Bullet Proof”* build as their other amplifiers with a combination of anodised alloy plate, stainless and painted steel.


We do not use “tin and plastic”! For space saving we have used the same “lengthways” chassis as our phono pre-amp so it will fit nicely alongside your existing equipment, with the connections on the rear, and headphone socket at the front. The HP8 MKII is very versatile.

(*Quote: Hi Fi News/Hi Fi Choice)

It may be connected to your hi fi in several ways:


1, In a normal hi fi system you would connect to the “record out” of your amplifier. This will then be directly connected to the “source” that you have selected.
2, If your amplifier does not have a suitable output, splitter leads may be used.
3, With “Pre and power” systems a connection may be made between the two units.
4, As a stand alone unit you can directly connect to any CD/MP3 phono pre-amp.




Specifications and Features

• Comprehensive manual supplied
• Full instructions for valve change included
• All hand wired point to point
• No printed circuit board to ‘colour’ sound
• Japanese Blue ALPS volume pot.
• Class A, all Triode circuit
• Output impedance matching from 8 to 600Ω
• 2 x Russian 6SN7
• NOS, Treasure and Full Music types available
• 1x ECC83 first stage valve
• Signal to noise level -90db
• Freq response better than 20hz-20kHz +0 –0.2db
• Total harmonic distortion typically less than 0.2% 1khz
• Suitable for 4-8 ohm high efficiency loudspeakers
• Japanese steel EI transformers with low oxygen copper
• Slim profile design
• High quality 2W metal film, & wire-wound resistors
• Blue LED mains indicator
• Polypropylene audio capacitors
• Silver TEFLON audio cable
• Custom hand wound output transformers
• Ceramic valve holders for minimum leakage
• Gold plated Input & speaker terminals
• One line input
• 350mv input sensitivity.
• 230/240volts 36 watts.
• C E, ROHS and WEEE compliant
• 11cm W, 35 cm D, 14.8 H, 6.5 kg (remember to allow space for connections)







Average Rating (5 Reviews):  
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Excellent audio and customer service
18 July 2019  | 

Paired with Final Audio D8000s and Ultrasone Edition 5 headphones this amp gives excellent engaging sound. There was a small problem with the headphone socket but this was fixed with a one day turn around.

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This review has not been appraised.

Beautiful headphone amplifier with excellent sound quality
14 October 2018  | 

Excellent headphone amp offers amazing sound quality and can be operated with various 6SN7 power valves and ECC83 and 5751 (for less gain) driver valves. The amp is absolutely silent without any background noise or hum. First, heard a faint hum at Middle and High gain setting because of an earth loop in my system. I replaced the mains plug of my Icon Audio PS2 phono stage with a cheater plug without ground connection and the ground hum was totally eliminated. I strongly recommend the Icon Audio HP8 MKII.

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This review has not been appraised.

Se Edition Good Sound with Senny HD800
05 June 2017  | 

Relaxed and smooth sound with the SE edition with Jensen Caps.

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1 of 1 people found this review helpful.

Beautiful amplifier
19 October 2016  | 

Beautiful amplifier with famous for sound. (with GRADO RS2e)

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4 of 4 people found this review helpful.

Icon Audio HP 8 MKII
14 July 2014  | 

Icon Audio HP 8 MKII is very musical headphone amplifier! All lovers of good sound to recommend buying!

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6 of 11 people found this review helpful.

01733 350 878
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