Ruby II Valves amplifier (no compromises)

An EL-34 based high-end audio amplifier.

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Ruby II

1.530,00 € — 1.626,00 €

To choose your Output Valves, please check our EL34′s page.

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.Ruby II Valves amplifier

This valves amplifier is directly derived from our second prototype. It was designed with one key idea : No compromises !

  • No compromises about the components quality.
  • No compromises about the Audio quality.
  • No compromises about the capacitors (grade 105°).
 ..To name but a few of our choices :
Only one capacitor in the signal path. Tube connectors are point-to-point wired, while the rest of the components are located on a high grade double-sided Printed Circuit Board. Circuit board with 100 microns thick copper tracks. 1.5 mm steel sturdy enclosure, with 3mm aluminium front and rear plates, mounted on gold spikes to minimize microphony.

Technical specifications

Mains : 110V-220V Output Power : 25 watts x 2 in ultra-linear mode, 13watts x 2 for triode mode. (factory wired but easily changed) Output Tube : EL34 x 4 (Electro Harmonix as standard, other brands as options) Input/Driver Tube : 5670 x 2, 6SL7GT x 2 Frequency response : 7Hz-77KHz +/-3 dB Signal/Noise Ratio : 102dB Distortion : Less than 0.5% at full power Output impedance : 8 ohms.

Why shoud I buy a valves amplifier, also known as “tubes amplifier” ? One answer would be: it sounds different from transistors amplifiers, but it is much more than that, let’s see. Valve amplifiers will reduce the harsh sound in most hi-fi systems, without losing the treble and musical details.

  • Class A valve amplifiers do NOT have crossover distortion at low levels.
  • Class A valve amplifiers allows you to hear the “silence” between the notes.
  • Class A valve amplifiers allows you to hear a note, followed by silence (or the dying echo of the note in the concert hall).

And much more…

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