Synthesis.- Roma 79DC Tube Phono Stage MM-MC
Synthesis is set to release a new tube phono stage, the Roma79DC.
The all important component of this of this line stage comprises of two ECC83/12AX7 and one ECC82/12AU7 are run by a multi stage fully regulated power supply.
To back this up the design has an over size shielded power transformer for reduce the interference. An array high grade metalized polipropilene capacitors controlling the audio signal circuits. The MM input stage uses a low noise JFet with a separate regulated power supply with extensive filtering for reducing the interference
and noise. Using an ECC82/12AU7 tube on the output stage, gives this unit a very low output impedance without losing signal.
The Roma79DC has easily selectable capacitors (MM) and impedances (MC) for cartridges by a front mounted knob selector which is also shown on the front LCD
Tube phono stage MC and MM inputs. MM input capacitor selected by front knob, MC input impedance selected by front knob both showed on LCD. Input MC by low noise FET. ECC83 on RIAA section and output stage by selected ECC82 in white follower configuration. RIAA accurancy 0,5%
Roma 79DC Tube phono stage MM-MC
Gain stage (each ch): 1 X ECC83 (MM) + ultralow noise JFET (MC stage)
Out stage (each ch): 1/2 X ECC82
Frequency response: RIAA curve 20Hz - 20KHz +- 0,5dB
Gain (MM): 40dB Gain (MC): 60dB Cartridge load:
Selectable by front knob
MM: 47Kohm 47/100/150/200/270/370pF
MC: 100pF 22/47/100/150/330/1Kohm
Signal/Noise ratio: > 80dB (MM), > 60dB (MC)
Power consumption: 30W
Dimensions: (w,d,h) 260x380x95mm
Weight: 5 Kg