EOS  – Power Amp

Luna tube phono preamplifier is top class product in Trafomatic Audio production .

The main advantage is that this preamplifier use very rare LCR method to apply the RIAA correction due to complexity and cost.

There are a total of only the finest components such as four C3g SE tubes connected in triode mode , two interstage and two line output transformers as well as LL1941 input MC step up .

This preamplifier also applies the separately executed power supply used low induction toroidal transformer as well as two high inductivity chokes and Mundorf MLytic HV electrolytic capacitors .

 

Luna features :

  • Built in step up transformers
  • Switches ground plane with input selection preventing ground loops
  • Balanced and unbalanced output
  • Separate low impedance CLC power supply

Luna uses two tube gain stages with zero feedback and passive LCR equalizer .

The input stage as well as output is low noise Siemens c3g German Post tubes used in triode connection. Every stage is loaded by transformers and this provide complete isolation of this sensitive circuit from the following components.

There are no capacitors in signal way except in RIAA correction where we used Silver mica ones.

Luna – Image gallery

Specifications

Maximum output power: 100W
Class of operation: A
THD: 3.5% max (100W/1kHz)
Bandwidth: 10Hz­85kHz
Inputs: 1xRCA and 1x XLR: 0.8Vef
Input impedance: 100 kohm
S/N : 83 dB (1KHz / 1W)
Output (speaker) impedance: Speaker terminals for 4 and 8 ohms
Tubes: 4 x KT120, 2 x 6N6P­EV , 2x 5687
Input Voltage: 120V, 60Hz or 230V, 50Hz (as marked on the real plate of power supply box)
Maximum input current: 4A at 120V, 2A at 230V
Dimensions: Width x Depth x Height: 450mmx350mmx240mm
Weight of amplifier: 25kg
Weight of power supply box: 12 kg