Ayon Audio Spheris

Features

Full-featured vacuum tube stereo preamplifier
Unique new pure vacuum tube-circuit design and maintains an exceptional bandwidth that extends well beyond 700 kHz

Ultra selected, absolute best quality passive components used in all applications
Shortest possible signal paths
Very low output impedance to drive any tube or solid state power amp
Central one-point earth grounding
Fully hand assembled to insure the highest level of craftsmanship
Limited production
The beautifully crafted aerospace grade 10mm 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
24K gold-plated industrial grade PCB
Audio circuit boards are anti- resonance-damped mounted
Silver solder used for the best electrical connection
Ultimate silver-ceramic fuse / Germany
AC Phase polarity control indicator
Warm-up muting period for extending tube life time
2 Special tubes for stereo line-amplification ( tube life min. 10000 hrs )
4 Special tubes for stereo phono-amplification ( tube life min. 10000 hrs )
External tube-regulated & stabilized power supply ( RCA 6AX5GT rectifier tubes )
The large 125 VA noiseless toroidal power transformer is encased, excellent damped and RFI/EMI ultra-shielded (custom-made for Ayon)

Lundhal/Sweden - Dual choke power supply
Lundhal/Sweden - 2 MC phono transformer
Lundhal/Sweden - 2 Balanced/output transformer
EBG/Austria - The best sounding precision special resistors 0,5% are
used everywhere, best resolution and lowest noise (custom-made for Ayon)

Mundorf/Germany - Supreme/silver-gold capacitors
Rifa - Long life capacitors
Ayon - Premium internal signal cable uses ultra pure, soft annealed copper and super low loss insulation.
Ayon - Powercord between power supply & preamp
WBT/ Germany - RCA input jacks
Neutrik/Swiss - XLR chassis connectors


Specifications