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 display
Specifications
Gain stage (1ch.)
1 x 12AX7/ECC83 (MM)
Ultralow noise JFET (MC)
Output stage (1ch.)
1/2 x 12AU7/2CC82
Frequency response:
20Hz - 20KHz +- 1dB
Gain (MM)
40 dB
Gain (MC)
60 dB
Gain (MC+)
65 dB
S/N Ratio
>80 dB (MM) “A” weighted
>70 dB (MC) “A” weighted
Cartridge load
(selectable by front knob)
MM type: 47 KOhm
47/100/150/200/270/320/370/420 pF
MC type: 100 pF
22/33/50/75/100/150/330/1000 Ohm
Output level
>2V RMS
Output impedance
<500 Ohm
Dimensions (w,d,h)
260x380x95 mm
Weight
5Kg
Line Power
117, 230, 245 Vac±10%, 50/60 Hz
(see rear label)
Fuse
(see rear label)
Consumption
30W max
