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Audio Consulting Silver Rock Meteor Phono Preamplifier

Meteor Silver Rock Phonostage

Meteor Silver Rock Toroidal Phono Amplifier


  • Solid state circuit for 43dB gain and L-R RIAA equalisation

  • Toroidal Silver Rock MC step-up transformer at the input using cryo silver wire

  • RIAA equalization is achieved with resistors and toroidal silver wire inductors

  • Toroidal Silver Rock output transformer using cryo silver wire

  • Gain: 70 dB 

  • Lead/acid batteries as power supply

  • Very low production of heat

  • Power consumption: idle 0.5 watt

  • Several type of cabinet finishes are available

  • Size:  65cm x 35cm x 21cm

  • Weight: 23 kg


The new "Meteor" Phono Stage by Audio Consulting  - absolute reference performance


The Silver Rock Phono was made available in 2003. It has been a very successful Phono stage that the press and many of our customers have accepted with great enthusiasm.

The basic topology was quite simple, while the complexity was included in the 4 inductive elements per channel.

MC step up at the beginning, followed by an active device including inductive RIAA crossover, and finally an output transformer, which together reached a comfortable 70 dB of gain @ 1KHz.

Over the last 5 years we have developed several products containing new toroidal core transformers (MC step up, Meteor AVC, Mipa Reference).

We gained knowledge in this specific field and decided to improve the already excellent Silver Rock Phono Amplifier, replacing all 4 inductive elements with toroidal cores.

The power supply capacitors as well as the resistive elements were also improved while working on this “no compromise” Silver Rock Phono Amplifier.


Further research in the field of airborne and ground transmitted vibrations lead to a “Meteor” version, which was presented to the public in May 2015.

An oval cabinet that is milled out of a piece of wood the same way we produce our AVC “Meteor” cabinets was the beginning of this new version of the Silver Rock Toroidal Phono Amplifier. This avoids standing waves and contributes to a substantial improvement in noise reduction.


In order to fight ground-transmitted vibrations, we decided to use the brand new Gyrotension VEGA Vibration Isolation Devices by Nasotec.

They are built into the Meteor cabinet. 


Further vibration control for the 8 magnetic elements (silver wire transformers and inductors) are also being used in the form of natural damping materials.

This technology totally excludes the use of any type of toroidal coiling machine. Thus all magnetic elements are hand coiled.


Imagine several thousand turns applied by hand…


Laquer Finishes / Natural Wood Chassis
ACS Products are customized to your system's requirements
Prices shown are indicative only and reflect a common standard configuration which is described in the page text above
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