Ayon Crossfire-Evo Delta AA82B(300B) 50w SE class-A Integrated/Power amp

AY 35 AI CROSDEL
NZ$ 34,995.01 ea (incl. GST)
Ayon Audio

"The Bugatti of Audio" - according to respected TAS: The Absolute Sound magazine

New

The Crossfire-Evo Delta continues the evolution of the Crossfire-III and Evo amplifiers by once again offering dramatic improvements to its completely revised third-generation power supply, tube regulator and new gain stage technology. 

The gain stages have been optimised to provide for the shortest signal path and the most direct signal flow. Furthermore a new revolutionary MCU based volume control system with analog relay switches (fixed 1% resistor type) has been installed. 

The  Crossfire-Evo Delta is our most powerful SE-triode integrated amplifier featuring single-ended triode circuitry with our exceptional Ayon 62B power tube. Zero dB feedback, pure class-A operation for the most natural fast and authentic 3D holographic sound. It’s uncompromising design with rich and varied interplay of macro- and micro lines of dynamic performance. The ambiance of the original event is reproduced with uncanny precision as space illuminated by music. The Crossfire III is a magic masterpiece of simplicity and function which is pleasing to the eye and pleasant to the touch.

Features

Specifications

Features

Full-featured single-ended tube stereo integrated amp or pure power amplifier
SE - pure Class-A triode vacuum tube-circuit design
AA82B 50w Power output tubes high peak current & high voltage delivery
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. Today only few manufacturers still produce tubes for pure audio amplification; one of them is Ayon Audio with its outstanding single-ended triode power tubes (AA62B and AA82B) based on the WE 300B.

Signal Path
We believe that the simplest circuits work best together with the shortest signal path. That is why our SE-Triode amplifiers to date have used single-ended pure class A circuitry. 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
Tube and electronic protection circuit system
0dB negative feedback  (of any kind )DHT
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
External static bias adjustment
No followers or buffers in the signal path
High quality parts throughout
Selector switch engages relays located near RCA jacks to switch all inputs

Power Supply
Single ended amps are more susceptible to power supply aberrations than push-pull amplifiers. 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 stage which makes this a pure power source and it is a critical attribute for a single-ended amplifier. 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.

2 separate low noise –insulated power transformers
Power transformers are encased, excellent damped and RFI/EMI shielded
Innovative power supply provides a high speed energy delivery on transients
Dual choke filtered power supply for Ayon AA82B
Dual choke for pre and driver stage
Tube regulated power supply (5U4G)
Separate and isolated power supplies over each stage of amplification
Regulated DC filament supplies with soft start 
AC power line filter to avoid noise and hash from entering into the unit. 
High capacitance energy storage.
Current in-rush limiting
Auto sequencing - Power on cycle completes in 1 minute

Dual Grounding System
The modification of the grounding topology leads to increased rejection of noise from the power supply and other areas. The dual grounding topology used in all of our amplifiers is quite unique to the whole hi-end tube amplification industry. Such extensive topology provides for quieter backdrop for which the music can unfold in its entirety. It further establishes the quick and controlled bass response and the full bodied expression of the high frequency. The ground leg of the signal has not been neglected and given meticulous attention in its implementation. The importance of proper grounding cannot be over emphasised.

Ground switch
Central one-point star earth grounding
Dual grounding system (switchable)

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 (made by ayon)
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, premium 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
WBT/Germany – binding posts
WBT/Germany – input jack
Neutrik/Swiss - XLR chassis connectors
Special isolated - internal wiring
Silver-copper matrix - internal signal cable
Gold-plated industrial grade PCB
All wiring to the circuit boards is done with the use of special pluggable pin- connectors. 
This is done for easy of repair should ever the need arise.

Mechanical Construction
The high grade aluminium chassis impart a richer, more lustrous tonality with a cleaner background and less hash and grain. All brushed anodised 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
Backlit “ayon” logo
All front & rear panel descriptions are engraved
4 line inputs & 1 direct input - for pure power amp operation

Ground switch
AC phase polarity control indicator
Volume & Mute function - RC
Bias analog-instrument with mV scale
Metal remote commander
Chassis finish: black / chrome

Specifications

Class of Operation: Single-Ended, Pure Class-A
Tube Complement: 2x AA82B (exclusive to Ayon based on WE 300B)
                                 4x 6SJ7 tubes
                                 2x 6H30 tubes
                                 1x 5U4G tube
Frequency Response: 8 Hz - 35 kHz/ 0 dB
Load Impedance: 4 & 8 Ohms
Output Power: 2x 50 Watt
Input Impedance at 1kHz: 100 KΩ
S/N ratio at full power: 98 dB
NFB: 0dB
Volume Control: MCU based with analog relay switches & display (fixed 1% resistor type)
Remote Control: Yes
Inputs & Output: 3xLine In, 1x XLR In, 1xDirect In, 1x Pre-out
Dimensions 520W x 420D x 250H
Weight: 45 kg
Shipping weight: 55kg