Lector Phono Amp MM
- Производитель: Lector
- Код товара: 12774
- НЕТ В НАЛИЧИИ. Товар снят с производства
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Ламповый MM фонокорректор.
The Phono M M P is a complete phono riaa all tubes preamplifier that operate on class A without any local or total feedback circuity. This preamplifier provide the right amplification and equalization to standard riaa at the phono moving magnet cartridge signal. The circuity use three tubes, two ECC-81/12AT7 for moving magnet input (as passive riaa equalization) and one ECC-81/12AT7 for output as cathode follower adaptor, all tubes are accurate selected at very low noise operation . A innovative circuity designed from enginner of Lector make the control of the bias by optical devices for clear sound and phase control. A solid shielded cabinet as hi-tickness off 1,5 mm reduce interference from emc field for a better signal to noise ratio.
For to built this riaa phono preamplifier we have design the circuit with minimun capacitors on signal path (only 2 as polypropilene grade) hi-reserved energy power supply with capacitors filter located near to active device.
S P E C I F I C A T I O N
(all measure by Audio Precision System One @ 230 V ac) |
|
Type |
MM all tube step-up preamplifier by 12AT7 |
Input |
MM at 47 Kohm 100 pF |
Gain |
47 db (Mm) |
Frequency Response |
20 - 50Khz +/- 0.3 db |
Noise ratio |
69 db ( A ) |
Output Impedance |
290 ohm |
Voltage available |
Power supply @: 230-240 Vac / 110-120 Vac / 100V ac all voltage at 50 - 60 Hz |
Overall Dimension and weight |
400 x 85 x 300 (L x H x D mm) for main unit
weight 9 Kg net |