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NO Ultra-Linear/Triode Operation – You do not want this mode of operation in your Tube Amp!

PURE CLASS A PENTODE/TRIODE –
IS THE ONLY WAY TO GO –

The Holy Grail is Pentode/Triode
Pure Class A

No, we do not use ultra-linear/triode operation – Inferior for High End

Ultra-linear electronic circuits are those used to couple a tetrode/triode or pentode
vacuum-tube to a load (e.g. to a loudspeaker).

‘Ultra-linear’ is also known as ‘distributed loading’; a circuit technique patented by
Alan Blumlein in 1937. Ultra-Linear “distributed loading” was intended
for guitar amps, etc.

• In pentode or triode, in which the screen-grid is connected to a stable DC voltage so there are no signal
variations on the screen-grid (i.e. the screen-grid has 0% of the
plate’s output signal impressed on it), or

• In triode, in which the screen-grid is connected to the plate (i.e. the screen-grid
has 100% of the plate’s output signal voltage impressed on it), or

• a blend of triode and pentode, in which the screen-grid has a
percentage (between 0% and 100%) of the plate’s output signal impressed
on it. This is the basis of the Ultra-Linear “distributed load circuit”
and is seen as a form of feedback, which alters the behavior of the
electron stream passing from cathode to anode.

Ultra-linear introduces negative feedback, which squashes and compresses the sonic performance. 

So the Pentode/Triode operation will yield a vastly superior response and
more of a “tactile” or SET sound, more of a three dimensional sonic
signature. Quite Superior!
 

Ayon – Scorpio II 

“The entrance into real high-end tube amplification”.

The Scorpio II represents a dramatic rethinking of economic vacuum tube based integrated amplifier industrial design while retaining the basic architecture as our highly regarded “Spirit” amplifier.

The Scorpio II integrated amplifier combines neutrality, realistic dynamics and power projection, true musicality with high resolution.

Perfect finish, elegant discrete design and outstanding sonic performance make the “Scorpio II” unique, setting a new price-to-value standard in its class.
 

Features  &  Design

Full-featured pure class-A tube stereo integrated amplifier

Switchable between pentode and triode mode

EL34, KT88 or KT150 power output tubes

Ideal also for more difficult loudspeaker loads

Vacuum Tubes

The choice of signal and power tubes have a significant influence on the sound and hence on the inspiration and joy of listening. This is not only the decision between good and bad tubes but finally the interaction of the different types of tubes and their combination that are used in the various Ayon amplifiers.

Signal Path

We believe that the simplest circuits work best together with the shortest signal path. The shorter the signal path is, the less possibility of sonic degradation from various sources, including the wire itself. Even on the circuit boards, the copper traces are kept to a very minimum length. The completely redesigned circuit board provides a more straightforward and direct approach to the signal paths.

• Logical sequenced soft-start power up for extended tube life
• Power tube and electronic protection circuit system
• 0dB negative feedback  (of any kind )
• Ultra short signal path
• Simplest direct circuit path for purest musical sound and high reliability
• No solid state devices in the signal path
• High current and low impedance design that operates tubes in the best areas their curves
• Minimal discrete wiring for optimum signal propagation
• Automatic and manual bias adjustment
• No followers or buffers in the signal path
• Quality parts throughout
• Selector switch engages relays located near RCA jacks to switch all inputs

Power Supply

The power supplies have been further refined with new components and enhanced AC line noise filtration. Separate power transformers, chokes and filters provide total isolation between the input and output stages which makes this a pure power source. We also use electrolytic capacitors with much larger storage capacity to make up for the loss in filtering when using resistors in lieu of inductors.

• Low noise –insulated power transformers
• Power transformer is encased, excellent damped and RFI/EMI shielded
• Innovative power supply provides a high speed energy delivery on transients
• Choke filtered power supply
• Separate and isolated power supplies over each stage of amplification
• High current filament-regulator for pre and driver tubes
• Regulated DC filament supplies with soft start
• AC power line filter to avoid noise and hash from entering into the unit
• Current in-rush limiting
• Auto sequencing – Power on cycle completes in 1 minute

Output Transformer

The super-wide bandwidth output transformer’s major strength is that it can deliver the current in the bass, while at the same time maintaining the speed in the high frequencies, dramatically improving the square wave response of the amplifier. The effect is a much more natural and relaxed sound with much better clarity, resolution and fluidity.

• Super-wide bandwidth high performance output transformer
• High efficiency with low insertion loss for optimal current and voltage transfer
• Multiple tight layering and coupling for extended frequency response
• Output transformers are sealed with an anti-resonance compound material

Components

The type of parts used therefore must have a synergistic relationship to the circuit they are placed in. It is this relationship of which type of part to use where, that ranks our products apart from the mass. 

• Selected, quality passive components used in all applications
• High speed  & high quality audiophile grade coupling capacitors
• Special tube sockets with beryllium- copper spring pins, custom made by Ayon
• High quality – binding posts
• High quality – RCA input jack
• Special isolated – internal wiring
• Copper matrix – internal signal cable
• Gold-plated industrial grade PCB

 Mechanical Construction

The high grade aluminum chassis impart a richer, more lustrous tonality with a cleaner background and less hash and grain. All brushed anodized anti-vibration-resonance and non-magnetic chassis’ are fully hand assembled to insure the highest level of craftsmanship.

• Improved heat ventilation chassis
• Custom-made machined control knobs
• The aluminium feet are resonance absorbing types
• Analog bias meter
• Backlit “ayon” logo
• All front & rear panel descriptions are engraved
• 4 line inputs
• Volume & Mute function – RC
• Metal remote commander
• Chassis finish: black / chrome

PRICE PROTECTION GUARANTEE

Our 90 Day Price Protection Guarantee assures our clients of our continued commitment to full satisfaction and delight.

Should you find any Hi Fi product we offer from an Authorized Dealer
in the USA for a lower price than the price you paid to us, we will
gladly refund to you the difference plus 10% of that difference.

Open 7 days, 10am to 8pm Ocean West

USA Tube Audio - Since 1976

Please call 1-800-676-1085 Sales X2 USA + Canada

1-323-657-5993 International

52-55-8525-6102 Mexico

www.usatubeaudio.com