Ayon Spheris
"A new masterpiece"
The Spheris preamplifier sets a new standard for natural musical performance, offer wide bandwidth, extremely low distortion, colourful, superior dynamic range and a three-dimensional holographic soundstage.
Features
- 2 Chassis full-featured class A single-ended & true balanced triode-pentode vacuum tube stereo preamplifier
- Unique new pure vacuum tube-circuit design and maintains an exceptional bandwidth that extends well beyond 500 kHz
- DHT
- 0 dB negative feedback
- Purist tube design (no any transistor) and shortest possible signal paths
- Very low output impedance for driving very long runs interconnect to an amplifier, and any tube or solid state power amp
- Ultra selected, absolute best quality passive components used in all applications
- Central one-point earth grounding
- Fully hand assembled to insure the highest level of craftsmanship
- Limited production
- The beautifully crafted aerospace grade aluminium-brushed, anodized and anti-vibration resonance, non-magnetic chassis shields effectively against RFI and EMI.
- Backlit front panel displays indicate level attenuation & input selection
- All front & rear panel descriptions are engraved
- 3 Platinum knobs (selectors, volume) with backlit glass pivot
- The aluminium feet are resonance absorbing types
- Chassis finish: black
- Elma/Swiss - 4 channel / precision 24 position stepped attenuator volume control with 192 Welwyn ultra linear metal-film resistors 0.1%
- This stepped volume control has gold plated contacts and a channel balance within +/- 0.05db (custom-made for ayon)
- Elma/Swiss - Input selector switches
- Selector switch engages relays located near RCA jacks to switch all inputs
- Gold-plated industrial grade PCB
- Audio circuit boards are anti- resonance-damped mounted
- Silver solder used for the best electrical connection
- 4 Special tubes for stereo line-amplification (tube life min. 10000 hrs)
- 4 Special tubes for stereo phono-amplification (tube life min. 10000 hrs)
- Passive RIAA equalization with 0dB feedback
- Very low noise enables full use of cartridges down to 0.1mV
- High-Current filament regulator for signal tubes and soft start automatic
- Special vibration dampening system for all signal tubes
- Lundhal/Sweden - 2 MC phono transformer
- Lundhal/Sweden - 2 Balanced splitting transformer between single-ended and balanced input
- Tantalum - The best sounding precision special resistors are used everywhere, best resolution and lowest noise
- Mundorf/Germany - Supreme/silver-gold capacitors
- Rifa - Long life capacitors
- DC-Power filter
- Ayon - Premium internal signal cable uses ultra pure, soft annealed copper and super low loss insulation.
- Remote Control for Volume
- WBT/ Germany - RCA input jacks
- Neutrik/Swiss - XLR chassis connectors
EXTERNAL AC~REGENERATOR - TUBE POWER SUPPLY
The Spheris AC~ Regenerator offers stable, regulated and purified AC power regardless of the incoming AC line quality. This power supply provides a lowered noise floor, more liquidity, better spatial three-dimensional imaging, greater focus, richer colours, and decreased glare & haze.
Features
- Tube regulated power supply with built in AC ~ Regenerator
- Regenerated AC power and low distortion sine wave
- Superior noise reduction
- Fully hand assembled to insure the highest level of craftsmanship
- Limited production
- The beautifully crafted aerospace grade aluminium-brushed, anodized and anti-vibration resonance, non-magnetic chassis shields effectively against RFI and EMI.
- All front & rear panel descriptions are engraved
- The feet are resonance absorbing types
- Chassis finish: black
- AC phase polarity control indicator
- AC voltage and frequency meter
- DC-Power filter
- Voltage adjustable (100V to 115V and 200V to 230V)*
- Frequency adjustable (50Hz, 60Hz & 120Hz)*
- Tube-regulated & stabilized (RCA 6AX5GT rectifier tubes)
- Lundhal/Sweden - Dual choke power supply
- 2 large noiseless toroidal power transformers are encased, excellent damped and RFI/EMI ultra-shielded (custom-made for Ayon )
Specifications
Tube Preamplifier | Ayon Spheris |
Class of Operation | Pure Class A, Triode-Pentode |
Tube Complement Preamp-Line | 4 x Siemens C3M |
Tube Complement Preamp-Phono | 4 x Siemens C3M |
Maximum Output (at 1 khz ) | 40V rms |
Input Impedance | 100 KOhm |
Output Impedance | 30 Ohm |
S/N ratio | 98 dB |
Frequency Response / Line | 1Hz - 500kHz |
Harmonic Distortion (at 1V ) Line | 0.001% |
Harmonic Distortion (at 1V ) Phono | 0.01% |
Input | 4 x RCA, 1 x XLR, 2 x Phono MC |
Output | 2x RCA, 1x XLR |
Power consumption | 65 Watts |
Dimensions Pre (WxDxH) cm | 48x43x14 cm |
Weight (Pre & Power Supply) | 20 kg |
AC Regenerator - Tube Power Supply | Ayon Spheris |
Tube Complement Power Supply | 2 x RCA 6AX5GT |
Power consumption | 10 Watts |
AC Regenerator | max.150W |
Voltage adjustable* | 100V to 115V and 200V to 230V |
Frequency adjustable* | 50Hz, 60Hz, 120Hz |
Start up voltage & frequency | 230V / 50 Hz |
Dimension (WxDxH) cm | 48x43x14 cm |
Weight (Power Supply) | 25 kg |
Specifications subject to change without notice; | |


