Ayon Spirit SE-II Integrated Amplifier (KT150)

Here we have a full-featured pure class-A tube stereo integrated amplifier from Austrian company Ayon Audio. Our example of the Spirit SE II is fitted with the higher specification KT150 power output tubes and is in very good condition with a couple of very minor blemishes – please refer to photographs. It is supplied in original factory packaging with remote control unit, manual, mains cable, and our usual three month warranty.
Ayon Audio Say….
The Spirit SE II represents a dramatic rethinking of economic Single-ended vacuum tube integrated amplifier design. The Spirit SE 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 “Spirit SE II” unique, setting a new price-to-value standard in its class.
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.
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
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
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
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
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
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’s 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
All front & rear panel descriptions are engraved
3 line inputs
Volume & Mute function – RC
Metal remote commander (option)
Specifications:
Class of Operation: Single-Ended, Class A
Tube Complement: 2 x KT 150
Load Impedance: 4 & 8 Ohms
Bandwidth: 15 Hz – 50 kHz
Output Power: 2 x 15 Watt
Input Sensitivity For Full Power: 250mV
Input Impedance: 100 kΩ at 1 kHz
Power consumption: 75 W
Dimensions: 300 (W) x 430 (D) x 230 (H) mm
Weight: 22.0 kg